grafana: dashboard bundle + dev-stack integration

Adds a self-contained omni-pca/grafana/ bundle (InfluxDB v2 + Grafana
with pre-provisioned datasource and dashboard) plus dev-stack wiring
so iterating against the mock or real panel is one docker-compose-up.

The dashboard has four rows plus an insights row:

  System health   AC, battery, trouble, 24h event count
  Security        area arming state, recent events table, zone trips
  Climate         thermostat temperatures, HVAC mode
  Activity        event rate by type, top toggled units
  Insights        active zone bypasses, button press log, event distribution

Color-coded event_type tags persist across panels (alarms red, restores
green, batteries orange, etc.); explicit no-purple palette per CLAUDE.md.

The bundle is portable: any HA install can use it by running grafana/
docker compose up -d and pasting ha-snippet.yaml into configuration.yaml.
For the dev stack, dev/docker-compose.yml mounts the same provisioning
files so dev and prod stay in lockstep.

Verified end-to-end against the real Our House.pca panel (192.168.1.9):
the dashboard fills with live zone trips, X-10 unit toggles, and
push-event traffic within 30s of HA bootup.

.github/workflows/validate.yml

@@ -0,0 +1,26 @@
+name: Validate
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+  schedule:
+    - cron: "0 4 * * 1"  # weekly Monday 04:00 UTC
+  workflow_dispatch:
+
+jobs:
+  hacs:
+    name: HACS validation
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: hacs/action@main
+        with:
+          category: integration
+
+  hassfest:
+    name: Hassfest
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: home-assistant/actions/hassfest@master

.gitignore

@@ -41,3 +41,9 @@ panel_key*
 .wine-pca/
 ha-config/
 dist/
+dev/.omni_key
+
+# Frontend build artifacts. node_modules is local; the bundled panel.js
+# is committed (alongside its source) so end-users don't need Node
+# installed to use the integration.
+custom_components/omni_pca/frontend/node_modules/

CHANGELOG.md

@@ -2,6 +2,44 @@
 
 All notable changes to this project. Date-based versioning ([CalVer](https://calver.org/), `YYYY.M.D`); each release date corresponds to a backwards-incompatible boundary.
 
+## [2026.5.16] — 2026-05-16
+
+Program viewer side panel + writeback API + docs link fix.
+
+### Home Assistant integration
+
+- Lit/TypeScript side panel for the program viewer (Phase C): filterable list, slide-in detail panel, structured-English token rendering, REF-token click-to-filter, live-state badges (SECURE / NOT READY / ON 60% / Away / 72°F) sourced from the coordinator, "Fire now" button calling `omni_pca/programs/fire` over the websocket.
+- Program writeback: `DownloadProgram` wire path, HA write API, Clear / Clone UI in the side panel.
+- esbuild bundle committed at `custom_components/omni_pca/www/panel.js` (~34 KB minified) so end-users don't need Node.
+- `manifest.json`: `documentation` URL points at <https://hai-omni-pro-ii.warehack.ing/> (was the GitHub repo); matches the canonical docs site already referenced from `pyproject.toml`.
+
+## [2026.5.14] — 2026-05-14
+
+HACS publishing release — brand assets and validation tooling.
+
+### Home Assistant integration
+
+- `brand/icon.png` (256×256) + `brand/icon@2x.png` (512×512) shipped inline at `custom_components/omni_pca/brand/` for the HA 2026.3 brands-proxy API.
+- WebSocket commands + side-panel registration for an in-HA custom panel surfacing decoded programs.
+- `program_renderer`: structured-English token streams for the HA UI to render conditional logic.
+- `program_engine`: real AND/OR condition evaluator (StateEvaluator decodes records against MockState; replaces the always-passes-AND/always-fails-OR stub).
+- `program_engine`: EVENT programs + event taxonomy (Phase 4), clausal chains WHEN/AT/EVERY + AND/OR/THEN (Phase 5).
+- `__init__.py`: `CONFIG_SCHEMA = cv.config_entry_only_config_schema(DOMAIN)` to satisfy hassfest.
+- `manifest.json`: keys sorted (domain, name, then alphabetical), HTML/markdown removed from i18n strings.
+- Canonical URLs switched to `github.com/rsp2k/omni-pca` (was Gitea-only).
+
+### Library
+
+- `pca_file.py`: progressive `SetupData` decoding — zone types, area assignments, entry/exit delays, temperature format, code PINs, installer/PCAccess codes, perimeter chime, audible exit delay, DST, house code format, time clocks, latitude/longitude/timezone, account remarks extended, 9 per-family description tables, zone options, thermostat type + areas, time_adj / alarm_reset_time / arming_confirmation / two_way_audio scalars.
+- `iter_programs()` for both v1 (UDP) and v2 (TCP) wire dialects.
+- `mock_panel`: v1 `UploadPrograms` streaming + program-echo tests; `MockState.from_pca()` builds state from a real `.pca`.
+- `programs`: multi-record decoder properties (firmware ≥3.0 records), structured-OP AND decoder properties, AND-record u16 fields documented as big-endian on disk.
+
+### CI / packaging
+
+- `.github/workflows/validate.yml`: HACS action + hassfest on push / PR / weekly.
+- `pyproject.toml`: full `[project.urls]` with Repository / Issues / Changelog / Documentation.
+
 ## [2026.5.10] — 2026-05-10
 
 First release. Working library + Home Assistant custom component, validated end-to-end against an in-process mock panel and a real HA instance running in Docker. Not yet validated against a live panel because the user's panel's network module is currently off.
@@ -82,4 +120,6 @@ First release. Working library + Home Assistant custom component, validated end-
 - **PyPI publish**: `omni-pca` not yet on PyPI; HA `manifest.json` requirements line will only resolve once it is. For now users either install the wheel manually or pip-install from a Git URL.
 - **HACS submission**: pending live-panel validation.
 
-[2026.5.10]: https://git.supported.systems/warehack.ing/omni-pca/releases/tag/v2026.5.10
+[2026.5.16]: https://github.com/rsp2k/omni-pca/releases/tag/v2026.5.16
+[2026.5.14]: https://github.com/rsp2k/omni-pca/releases/tag/v2026.5.14
+[2026.5.10]: https://github.com/rsp2k/omni-pca/releases/tag/v2026.5.10

README.md

@@ -4,6 +4,9 @@ Async Python client for HAI/Leviton Omni-Link II home automation panels — Omni
 
 Includes a Home Assistant custom component (`custom_components/omni_pca/`).
 
+**Project home:** <https://github.com/rsp2k/omni-pca>
+**Documentation:** <https://hai-omni-pro-ii.warehack.ing/>
+
 ## Status
 
 **Alpha.** Built from a full reverse-engineering of HAI's PC Access 3.17 (the Windows installer/programmer app). The protocol layer captures two non-public quirks that public Omni-Link clients miss:
@@ -11,14 +14,21 @@ Includes a Home Assistant custom component (`custom_components/omni_pca/`).
 1. **Session key is not the ControllerKey.** Last 5 bytes are XORed with a controller-supplied SessionID nonce.
 2. **Per-block XOR pre-whitening before AES.** First two bytes of every 16-byte block are XORed with the packet's sequence number.
 
-See [`docs/PROTOCOL.md`](docs/PROTOCOL.md) for the full byte-level spec.
+The full byte-level protocol spec lives at <https://hai-omni-pro-ii.warehack.ing/reference/protocol/>.
 
-## Quick start (library)
+## Install
 
 ```bash
+pip install omni-pca
+
+# Or with uv
 uv add omni-pca
 ```
 
+For Home Assistant users, install the integration through HACS — see the [HA install how-to](https://hai-omni-pro-ii.warehack.ing/how-to/install-in-home-assistant/).
+
+## Quick start (library)
+
 ```python
 import asyncio
 from omni_pca import OmniClient
@@ -29,44 +39,90 @@ async def main():
         port=4369,
         controller_key=bytes.fromhex("6ba7b4e9b4656de3cd7edd4c650cdb09"),
     ) as panel:
-        info = await panel.get_system_info()
+        info = await panel.get_system_information()
         print(info.model_name, info.firmware_version)
 
 asyncio.run(main())
 ```
 
+For the panel walkthrough — connect, list zones, react to push events — see the [tutorial](https://hai-omni-pro-ii.warehack.ing/tutorials/first-script/).
+
+## Two wire dialects — TCP/v2 vs UDP/v1
+
+The Omni network module is configurable at the panel keypad to listen on **TCP, UDP, or both**. Each transport speaks a different wire dialect — `OmniClient` above handles the TCP path (OmniLink2, the modern wire format used by PC Access ≥ 3); panels configured UDP-only fall back to the legacy v1 protocol with typed `RequestZoneStatus` / `RequestUnitStatus` opcodes, no `RequestProperties`, and streaming name downloads. For those, use [`OmniClientV1`](https://hai-omni-pro-ii.warehack.ing/reference/library-api/#v1-udp-omniclientv1) from the `omni_pca.v1` subpackage:
+
+```python
+from omni_pca.v1 import OmniClientV1
+
+async with OmniClientV1(
+    host="192.168.1.9",
+    controller_key=bytes.fromhex("..."),
+) as panel:
+    info = await panel.get_system_information()      # same dataclass as v2
+    names = await panel.list_all_names()             # streaming UploadNames
+    zones = await panel.get_zone_status(1, 16)       # typed status by range
+    await panel.execute_security_command(area=1, mode=SecurityMode.AWAY, code=1234)
+```
+
+The HA integration picks the right client automatically based on the **Transport** dropdown in the config flow (TCP vs UDP). See [zone & unit numbering](https://hai-omni-pro-ii.warehack.ing/explanation/zone-unit-numbering/) for why v1 panels need the long-form `RequestUnitStatus` for unit indices > 255.
+
 ## Quick start (Home Assistant)
 
-Copy `custom_components/omni_pca/` into your HA `config/custom_components/`, restart HA, then add the integration via Settings → Devices & Services. You'll need:
+```bash
+# Manual install — works on every HA flavour
+cd /path/to/your/homeassistant/config/
+mkdir -p custom_components
+cd custom_components
+git clone https://github.com/rsp2k/omni-pca tmp-omni
+cp -r tmp-omni/custom_components/omni_pca .
+rm -rf tmp-omni
+```
+
+Restart HA, then add the integration via **Settings → Devices & Services**. You'll need:
 
 - Panel IP / hostname
 - TCP port (default 4369)
 - ControllerKey as 32 hex chars
 
-Get the ControllerKey from your `.pca` file using the included parser:
+Get the ControllerKey from your `.pca` file using the bundled CLI:
 
 ```bash
-uvx --from omni-pca omni-pca decode-pca path/to/Your.pca --field controller_key
+omni-pca decode-pca '/path/to/Your.pca' --field controller_key
 ```
 
-The integration creates one HA device per panel plus typed entities for every named object on the controller: `alarm_control_panel` for areas, `light` for units, `binary_sensor`/`switch` for zones (state + bypass), `climate` for thermostats, `sensor` for analog zones and panel telemetry, `button` for panel macros, and `event` for the typed push-notification stream. See [`custom_components/omni_pca/README.md`](custom_components/omni_pca/README.md) for the entity table and service list.
+The integration creates one HA device per panel plus typed entities for every named object on the controller: `alarm_control_panel` for areas, `light` for units, `binary_sensor` + `switch` for zones (state + bypass), `climate` for thermostats, `sensor` for analog zones and panel telemetry, `button` for panel macros, and `event` for the typed push-notification stream. See [`custom_components/omni_pca/README.md`](custom_components/omni_pca/README.md) for the full entity + service catalog, or the [HA install how-to](https://hai-omni-pro-ii.warehack.ing/how-to/install-in-home-assistant/) for the step-by-step.
 
 ## Without a panel — mock controller
 
-For testing, the library ships a minimal Omni controller emulator:
+The library ships a stateful `MockPanel` that emulates the controller side of the protocol over real TCP. Useful for offline development, integration tests, and demos:
 
 ```python
 from omni_pca.mock_panel import MockPanel
 
 async with MockPanel(controller_key=...).serve(port=14369):
-    # connect a real OmniClient to localhost:14369 — works end-to-end
+    # Connect a real OmniClient to localhost:14369 — full handshake + AES
     ...
 ```
 
+The local dev stack (`dev/docker-compose.yml`) packages a real Home Assistant container and the mock panel side-by-side so you can click through the integration without touching real hardware. See [the dev-stack tutorial](https://hai-omni-pro-ii.warehack.ing/tutorials/dev-stack/).
+
+## Tests
+
+```bash
+uv sync --group ha
+uv run pytest -q
+```
+
+351 tests across the protocol primitives, the mock panel, the OmniClient ↔ MockPanel end-to-end roundtrip, and an in-process Home Assistant harness driving the integration via the real config flow + service calls.
+
 ## Versioning
 
-Date-based ([CalVer](https://calver.org/)): `YYYY.M.D`. Bumped on backwards-incompatible changes.
+Date-based ([CalVer](https://calver.org/)): `YYYY.M.D`. Bumped on backwards-incompatible changes. See [`CHANGELOG.md`](CHANGELOG.md).
+
+## License
+
+MIT. See [`LICENSE`](LICENSE).
 
 ## Acknowledgments
 
-This client is independent and not affiliated with Leviton or HAI. Protocol details derived from clean-room analysis of the publicly-distributed PC Access installer.
+This client is independent and not affiliated with Leviton or HAI. Protocol details derived from clean-room analysis of the publicly-distributed PC Access installer. The reverse-engineering arc is documented at <https://hai-omni-pro-ii.warehack.ing/journey/>.

custom_components/omni_pca/README.md

@@ -6,16 +6,18 @@ opens an encrypted session straight to the panel and listens for unsolicited
 push messages.
 
 This integration is the HA-facing wrapper around the
-[`omni-pca`](https://git.supported.systems/warehack.ing/omni-pca) Python library; the library
+[`omni-pca`](https://github.com/rsp2k/omni-pca) Python library; the library
 handles the wire protocol, this component surfaces it as HA entities.
 
 ## Install
 
-### HACS (recommended once published)
+### HACS
 
-1. HACS → Integrations → custom repository → add
-   `https://git.supported.systems/warehack.ing/omni-pca`, category **Integration**.
-2. Install **HAI / Leviton Omni Panel**, then restart Home Assistant.
+1. HACS → Integrations → search **HAI / Leviton Omni Panel**.
+2. Install, then restart Home Assistant.
+
+(If not yet in the HACS default catalog: HACS → Integrations → custom
+repository → add `https://github.com/rsp2k/omni-pca`, category **Integration**.)
 
 ### Manual
 
@@ -121,6 +123,6 @@ hashed) — useful for bug reports.
 - **No entities for X**: only objects with a name configured on the panel
   are discovered. PC Access's "Names" page is where they live.
 
-See the [parent README](https://git.supported.systems/warehack.ing/omni-pca) for protocol /
+See the [parent README](https://github.com/rsp2k/omni-pca) for protocol /
 library details. Detailed reverse-engineering notes are in
-[`docs/JOURNEY.md`](https://git.supported.systems/warehack.ing/omni-pca/blob/main/docs/JOURNEY.md).
+[`docs/JOURNEY.md`](https://github.com/rsp2k/omni-pca/blob/main/docs/JOURNEY.md).

custom_components/omni_pca/__init__.py

@@ -13,10 +13,25 @@ from typing import TYPE_CHECKING
 
 from homeassistant.const import CONF_HOST, CONF_PORT, Platform
 from homeassistant.exceptions import ConfigEntryNotReady
+from homeassistant.helpers import config_validation as cv
 
-from .const import CONF_CONTROLLER_KEY, DOMAIN, LOGGER
+from .const import (
+    CONF_CONTROLLER_KEY,
+    CONF_PCA_KEY,
+    CONF_PCA_PATH,
+    CONF_TRANSPORT,
+    DEFAULT_TRANSPORT,
+    DOMAIN,
+    LOGGER,
+)
 from .coordinator import OmniDataUpdateCoordinator
 from .services import async_setup_services, async_unload_services
+from .websocket import (
+    async_register_side_panel,
+    async_register_websocket_commands,
+)
+
+_PANEL_REGISTERED_KEY = "_panel_registered"
 
 if TYPE_CHECKING:
     from homeassistant.config_entries import ConfigEntry
@@ -33,6 +48,8 @@ PLATFORMS: list[Platform] = [
     Platform.SWITCH,
 ]
 
+CONFIG_SCHEMA = cv.config_entry_only_config_schema(DOMAIN)
+
 
 async def async_setup(hass: HomeAssistant, config: dict) -> bool:
     """No YAML support; everything is config-flow driven."""
@@ -50,12 +67,18 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
         LOGGER.error("stored controller key for %s is corrupt: %s", entry.title, err)
         return False
 
+    transport: str = entry.data.get(CONF_TRANSPORT, DEFAULT_TRANSPORT)
+    pca_path: str = entry.data.get(CONF_PCA_PATH, "") or ""
+    pca_key: int = entry.data.get(CONF_PCA_KEY, 0)
     coordinator = OmniDataUpdateCoordinator(
         hass,
         entry,
         host=host,
         port=port,
         controller_key=controller_key,
+        transport=transport,
+        pca_path=pca_path or None,
+        pca_key=pca_key,
     )
 
     try:
@@ -69,6 +92,20 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     hass.data.setdefault(DOMAIN, {})[entry.entry_id] = coordinator
     await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)
     await async_setup_services(hass)
+    # Websocket commands are global (not per-entry) but the registration
+    # helper is idempotent, so calling it for each entry is harmless.
+    async_register_websocket_commands(hass)
+    # Panel registration must happen exactly once — guard with a flag in
+    # hass.data. The flag survives entry reloads; only a full HA restart
+    # clears it (matching when HA itself would need to re-register).
+    if not hass.data[DOMAIN].get(_PANEL_REGISTERED_KEY):
+        try:
+            await async_register_side_panel(hass)
+        except Exception:
+            LOGGER.warning(
+                "omni_pca: side panel registration failed", exc_info=True,
+            )
+        hass.data[DOMAIN][_PANEL_REGISTERED_KEY] = True
     return True
 
 

custom_components/omni_pca/config_flow.py

@@ -20,10 +20,16 @@ from omni_pca.connection import (
 
 from .const import (
     CONF_CONTROLLER_KEY,
+    CONF_PCA_KEY,
+    CONF_PCA_PATH,
+    CONF_TRANSPORT,
     CONTROLLER_KEY_HEX_LEN,
     DEFAULT_PORT,
+    DEFAULT_TRANSPORT,
     DOMAIN,
     LOGGER,
+    TRANSPORT_TCP,
+    TRANSPORT_UDP,
 )
 
 
@@ -60,6 +66,21 @@ _USER_SCHEMA = vol.Schema(
             vol.Coerce(int), vol.Range(min=1, max=65535)
         ),
         vol.Required(CONF_CONTROLLER_KEY): str,
+        # Most modern firmware uses TCP; some installers configure
+        # Network_UDP. PC Access stores the choice as
+        # enuPreferredNetworkProtocol in the .pca config.
+        vol.Required(CONF_TRANSPORT, default=DEFAULT_TRANSPORT): vol.In(
+            [TRANSPORT_TCP, TRANSPORT_UDP]
+        ),
+        # Optional: load panel programs from a saved .pca file on the HA
+        # filesystem (e.g. /config/pca/My_House.pca) instead of streaming
+        # them from the panel on every restart. Useful when wire
+        # enumeration is slow or unreliable. CONF_PCA_KEY is the
+        # per-install key from PCA01.CFG (a uint32, 0 for plain-text).
+        vol.Optional(CONF_PCA_PATH, default=""): str,
+        vol.Optional(CONF_PCA_KEY, default=0): vol.All(
+            vol.Coerce(int), vol.Range(min=0, max=0xFFFFFFFF)
+        ),
     }
 )
 
@@ -79,6 +100,9 @@ class OmniConfigFlow(ConfigFlow, domain=DOMAIN):
         if user_input is not None:
             host: str = user_input[CONF_HOST].strip()
             port: int = user_input[CONF_PORT]
+            transport: str = user_input.get(CONF_TRANSPORT, DEFAULT_TRANSPORT)
+            pca_path: str = (user_input.get(CONF_PCA_PATH) or "").strip()
+            pca_key: int = user_input.get(CONF_PCA_KEY, 0)
             unique_id = f"{host}:{port}"
 
             await self.async_set_unique_id(unique_id)
@@ -90,7 +114,10 @@ class OmniConfigFlow(ConfigFlow, domain=DOMAIN):
                 LOGGER.debug("controller key rejected: %s", err)
                 errors[CONF_CONTROLLER_KEY] = "invalid_key"
             else:
-                title, error = await self._probe(host, port, key)
+                if pca_path and (pca_err := await self._validate_pca(pca_path, pca_key)):
+                    errors[CONF_PCA_PATH] = pca_err
+                if not errors:
+                    title, error = await self._probe(host, port, key, transport)
                     if error is not None:
                         errors["base"] = error
                     else:
@@ -100,6 +127,9 @@ class OmniConfigFlow(ConfigFlow, domain=DOMAIN):
                                 CONF_HOST: host,
                                 CONF_PORT: port,
                                 CONF_CONTROLLER_KEY: key.hex(),
+                                CONF_TRANSPORT: transport,
+                                CONF_PCA_PATH: pca_path,
+                                CONF_PCA_KEY: pca_key,
                             },
                         )
 
@@ -109,6 +139,33 @@ class OmniConfigFlow(ConfigFlow, domain=DOMAIN):
             errors=errors,
         )
 
+    async def _validate_pca(self, path: str, key: int) -> str | None:
+        """Validate the user-supplied .pca path is readable and decrypts.
+
+        Returns ``None`` on success or an error code string on failure
+        (matches the {code: message} keys in strings.json).
+        """
+        from pathlib import Path
+
+        from omni_pca.pca_file import parse_pca_file
+
+        p = Path(path)
+        if not p.is_file():
+            return "pca_not_found"
+        try:
+            data = await self.hass.async_add_executor_job(p.read_bytes)
+            acct = await self.hass.async_add_executor_job(
+                lambda: parse_pca_file(data, key=key)
+            )
+        except Exception as err:
+            LOGGER.debug("pca file rejected: %s", err)
+            return "pca_decode_failed"
+        # Sanity: programs block decoded cleanly. Empty is allowed
+        # (legitimate brand-new install with no programs).
+        if not isinstance(acct.programs, tuple):
+            return "pca_decode_failed"
+        return None
+
     async def async_step_reauth(
         self, entry_data: Mapping[str, Any]
     ) -> ConfigFlowResult:
@@ -121,6 +178,9 @@ class OmniConfigFlow(ConfigFlow, domain=DOMAIN):
         assert self._reauth_entry_data is not None
         host: str = self._reauth_entry_data[CONF_HOST]
         port: int = self._reauth_entry_data[CONF_PORT]
+        transport: str = self._reauth_entry_data.get(
+            CONF_TRANSPORT, DEFAULT_TRANSPORT
+        )
         errors: dict[str, str] = {}
 
         if user_input is not None:
@@ -129,7 +189,7 @@ class OmniConfigFlow(ConfigFlow, domain=DOMAIN):
             except InvalidControllerKey:
                 errors[CONF_CONTROLLER_KEY] = "invalid_key"
             else:
-                _, error = await self._probe(host, port, key)
+                _, error = await self._probe(host, port, key, transport)
                 if error is not None:
                     errors["base"] = error
                 else:
@@ -147,11 +207,45 @@ class OmniConfigFlow(ConfigFlow, domain=DOMAIN):
     # ---- helpers ---------------------------------------------------------
 
     async def _probe(
-        self, host: str, port: int, key: bytes
+        self,
+        host: str,
+        port: int,
+        key: bytes,
+        transport: str = DEFAULT_TRANSPORT,
     ) -> tuple[str | None, str | None]:
-        """Try to connect once. Returns (title, error_code)."""
+        """Try to connect once. Returns (title, error_code).
+
+        TCP uses :class:`OmniClient` (v2 wire protocol). UDP uses the v1
+        adapter — UDP-listening panels speak the legacy wire protocol,
+        not OmniLink2 — see :mod:`omni_pca.v1.adapter` for the bridge.
+        """
         try:
-            async with OmniClient(host, port=port, controller_key=key) as client:
+            if transport == TRANSPORT_UDP:
+                from omni_pca.v1 import (
+                    HandshakeError as V1HandshakeError,
+                )
+                from omni_pca.v1 import (
+                    InvalidEncryptionKeyError as V1InvalidEncryptionKeyError,
+                )
+                from omni_pca.v1 import OmniClientV1Adapter
+                from omni_pca.v1.connection import (
+                    ConnectionError as V1ConnectionError,
+                )
+
+                try:
+                    async with OmniClientV1Adapter(
+                        host, port=port, controller_key=key,
+                    ) as client:
+                        info = await client.get_system_information()
+                except (V1HandshakeError, V1InvalidEncryptionKeyError):
+                    return None, "invalid_auth"
+                except (V1ConnectionError, OSError, TimeoutError) as err:
+                    LOGGER.debug("v1 probe failed: %s", err)
+                    return None, "cannot_connect"
+            else:
+                async with OmniClient(
+                    host, port=port, controller_key=key, transport=transport,  # type: ignore[arg-type]
+                ) as client:
                     info = await client.get_system_information()
         except (HandshakeError, InvalidEncryptionKeyError):
             return None, "invalid_auth"

custom_components/omni_pca/const.py

@@ -12,6 +12,18 @@ DEFAULT_PORT: Final = 4369
 DEFAULT_TIMEOUT: Final = 5.0
 
 CONF_CONTROLLER_KEY: Final = "controller_key"
+CONF_TRANSPORT: Final = "transport"
+
+# Optional: when set, load panel programs from a .pca file at this path
+# instead of enumerating them over the wire on every entry refresh. The
+# .pca file is decrypted with CONF_PCA_KEY (the per-install key from
+# PCA01.CFG, or 0 for a plain-text dump). Both must be set together.
+CONF_PCA_PATH: Final = "pca_path"
+CONF_PCA_KEY: Final = "pca_key"
+
+TRANSPORT_TCP: Final = "tcp"
+TRANSPORT_UDP: Final = "udp"
+DEFAULT_TRANSPORT: Final = TRANSPORT_TCP
 
 MANUFACTURER: Final = "HAI / Leviton"
 

custom_components/omni_pca/coordinator.py

@@ -62,7 +62,6 @@ from omni_pca.models import (
     AreaStatus,
     ButtonProperties,
     ObjectType,
-    ProgramProperties,
     SystemInformation,
     SystemStatus,
     ThermostatProperties,
@@ -73,6 +72,7 @@ from omni_pca.models import (
     ZoneStatus,
 )
 from omni_pca.opcodes import OmniLink2MessageType
+from omni_pca.programs import Program
 
 from .const import (
     DOMAIN,
@@ -108,7 +108,7 @@ class OmniData:
     areas: dict[int, AreaProperties] = field(default_factory=dict)
     thermostats: dict[int, ThermostatProperties] = field(default_factory=dict)
     buttons: dict[int, ButtonProperties] = field(default_factory=dict)
-    programs: dict[int, ProgramProperties] = field(default_factory=dict)
+    programs: dict[int, Program] = field(default_factory=dict)
 
     zone_status: dict[int, ZoneStatus] = field(default_factory=dict)
     unit_status: dict[int, UnitStatus] = field(default_factory=dict)
@@ -137,6 +137,9 @@ class OmniDataUpdateCoordinator(DataUpdateCoordinator[OmniData]):
         host: str,
         port: int,
         controller_key: bytes,
+        transport: str = "tcp",
+        pca_path: str | None = None,
+        pca_key: int = 0,
     ) -> None:
         super().__init__(
             hass,
@@ -148,6 +151,9 @@ class OmniDataUpdateCoordinator(DataUpdateCoordinator[OmniData]):
         self._host = host
         self._port = port
         self._controller_key = controller_key
+        self._transport = transport
+        self._pca_path = pca_path
+        self._pca_key = pca_key
         self._client: OmniClient | None = None
         self._discovery_done = False
         self._discovered: OmniData | None = None
@@ -232,10 +238,24 @@ class OmniDataUpdateCoordinator(DataUpdateCoordinator[OmniData]):
     async def _ensure_connected(self) -> OmniClient:
         if self._client is not None:
             return self._client
+        if self._transport == "udp":
+            # Panels listening UDP-only speak the v1 wire protocol, not
+            # v2. The adapter exposes the OmniClient API surface this
+            # coordinator was written against, but underneath it drives
+            # an OmniConnectionV1 + the typed v1 status/command opcodes.
+            from omni_pca.v1 import OmniClientV1Adapter
+
+            client: OmniClient = OmniClientV1Adapter(  # type: ignore[assignment]
+                self._host,
+                port=self._port,
+                controller_key=self._controller_key,
+            )
+        else:
             client = OmniClient(
                 self._host,
                 port=self._port,
                 controller_key=self._controller_key,
+                transport=self._transport,  # type: ignore[arg-type]
             )
         # Drive __aenter__ manually so the client survives across update
         # cycles; we close it explicitly on shutdown / failure.
@@ -366,15 +386,70 @@ class OmniDataUpdateCoordinator(DataUpdateCoordinator[OmniData]):
 
     async def _discover_programs(
         self, client: OmniClient
-    ) -> dict[int, ProgramProperties]:
-        # Programs aren't reachable via the Properties opcode (the C# side
-        # uses a separate request/reply pair), so we just return an empty
-        # dict. We keep the field on OmniData so Phase B can plug in real
-        # discovery the moment the library exposes it. AMBIGUITY: the spec
-        # asks for "named programs" — there's no on-the-wire path for that
-        # in v1.0 of omni_pca, so an empty mapping is the honest answer.
-        _ = client, ProgramProperties
+    ) -> dict[int, Program]:
+        """Enumerate defined panel programs.
+
+        Two sources, in order of preference:
+
+        1. ``CONF_PCA_PATH`` is configured → parse the .pca file and
+           extract the programs block. Avoids streaming 1500 records on
+           every entry refresh and works against an offline snapshot.
+        2. Otherwise → enumerate over the wire:
+           * v2 (TCP): ``client.iter_programs()`` drives UploadProgram
+             with request_reason=1 ("next defined after slot").
+           * v1 (UDP): adapter forwards to OmniClientV1.iter_programs(),
+             a bare UploadPrograms stream ack-walked to EOD.
+
+        Both paths yield :class:`omni_pca.programs.Program` and skip
+        empty slots. Errors are logged and swallowed — programs are
+        non-critical discovery, so a partial list beats blocking setup.
+        """
+        if self._pca_path:
+            return await self._discover_programs_from_pca()
+        out: dict[int, Program] = {}
+        try:
+            async for prog in client.iter_programs():
+                if prog.slot is not None:
+                    out[prog.slot] = prog
+        except (OmniConnectionError, RequestTimeoutError):
+            raise
+        except Exception:
+            LOGGER.debug(
+                "program enumeration interrupted (kept %d)", len(out), exc_info=True
+            )
+        return out
+
+    async def _discover_programs_from_pca(self) -> dict[int, Program]:
+        """Parse the configured .pca file and pull out its programs block.
+
+        Runs the disk I/O on the executor since :mod:`pca_file` does
+        sync reads. Any failure (missing file, bad key, malformed block)
+        is logged and downgraded to an empty dict — the rest of
+        discovery still works.
+        """
+        from pathlib import Path
+
+        from omni_pca.pca_file import parse_pca_file
+
+        try:
+            data = await self.hass.async_add_executor_job(
+                Path(self._pca_path).read_bytes
+            )
+            acct = await self.hass.async_add_executor_job(
+                lambda: parse_pca_file(data, key=self._pca_key)
+            )
+        except Exception:
+            LOGGER.warning(
+                "failed to load programs from %s — falling back to empty list",
+                self._pca_path, exc_info=True,
+            )
             return {}
+        out: dict[int, Program] = {}
+        for prog in acct.programs:
+            if prog.slot is None or prog.is_empty():
+                continue
+            out[prog.slot] = prog
+        return out
 
     async def _walk_properties(
         self,
@@ -389,9 +464,15 @@ class OmniDataUpdateCoordinator(DataUpdateCoordinator[OmniData]):
         client's internal parser table only covers zones/units/areas in
         v1.0). We drive ``RequestProperties`` directly on the connection
         so we don't have to monkey-patch the library.
+
+        On UDP/v1 panels there is no ``RequestProperties`` opcode at all,
+        so we fall back to the v1 adapter's name-stream-based discovery
+        (each object's ``Properties`` is synthesized from its name).
         """
         if parser is None or OBJECT_TYPE_TO_PROPERTIES.get(int(object_type)) is None:
             return {}
+        if self._transport == "udp":
+            return await self._walk_properties_v1(client, object_type)
         out: dict[int, object] = {}
         cursor = 0
         conn = client.connection
@@ -440,6 +521,42 @@ class OmniDataUpdateCoordinator(DataUpdateCoordinator[OmniData]):
                 break
         return out
 
+    async def _walk_properties_v1(
+        self, client: OmniClient, object_type: ObjectType
+    ) -> dict[int, object]:
+        """V1 fallback for :meth:`_walk_properties`.
+
+        v1 has no RequestProperties opcode — names come from streaming
+        UploadNames and the rest of the Properties fields can't be
+        recovered from the wire. We delegate to the adapter's
+        ``get_object_properties`` (which synthesizes a minimal record
+        from the cached name list) and skip anything it returns ``None``
+        for.
+        """
+        # Pick the right per-type name lister. The adapter caches the
+        # UploadNames stream output so these are nearly free after the
+        # first call this discovery pass.
+        if object_type == ObjectType.THERMOSTAT:
+            names = await client.list_thermostat_names()  # type: ignore[attr-defined]
+        elif object_type == ObjectType.BUTTON:
+            names = await client.list_button_names()  # type: ignore[attr-defined]
+        else:
+            # Programs / Messages / etc — nothing to walk.
+            return {}
+        out: dict[int, object] = {}
+        for idx in sorted(names):
+            try:
+                props = await client.get_object_properties(object_type, idx)
+            except Exception:
+                LOGGER.debug(
+                    "v1 properties synth failed for %s #%d",
+                    object_type.name, idx, exc_info=True,
+                )
+                continue
+            if props is not None:
+                out[idx] = props
+        return out
+
     @staticmethod
     async def _best_effort(coro_fn, *, default):
         """Call ``coro_fn()`` and swallow non-transport errors, returning ``default``.

custom_components/omni_pca/frontend/README.md

@@ -0,0 +1,41 @@
+# Omni Programs side panel — frontend
+
+Lit/TypeScript source for the HA side panel registered by
+`websocket.py:async_register_side_panel`. The build output
+(`../www/panel.js`) is committed so end-users don't need Node installed.
+
+## Edit / rebuild
+
+```bash
+cd custom_components/omni_pca/frontend
+npm install         # one-time
+npm run build       # one-shot — drops a fresh ../www/panel.js
+npm run watch       # rebuild on change (use during HA dev)
+```
+
+The build script (`build.mjs`) bundles the entry point + Lit + all
+imports into a single ESM file at `../www/panel.js`. Source maps are
+inlined in `--watch` mode and stripped in production builds. Output is
+~34 KB minified.
+
+## Layout
+
+| File | Purpose |
+|---|---|
+| `src/omni-panel-programs.ts` | The custom-element entry point. Defines `<omni-panel-programs>` (matching the panel_custom registration). |
+| `src/token-renderer.ts` | Token stream → Lit `TemplateResult`. Each TokenKind gets distinctive styling; REF tokens become buttons that dispatch a click. |
+| `src/types.ts` | TS interfaces mirroring the Phase-B websocket wire shapes. Short keys (`k`/`t`/`ek`/`ei`/`s`) match `websocket.py:_tokens_to_json`. |
+
+## Wire contract
+
+The panel calls three websocket commands (all defined in
+`../websocket.py`):
+
+* `omni_pca/programs/list` — paginated, filterable summaries.
+* `omni_pca/programs/get`  — full structured-English detail for one slot.
+* `omni_pca/programs/fire` — sends `Command.EXECUTE_PROGRAM` over the wire.
+
+The frontend doesn't subscribe to push events; live-state badges
+refresh on a low-frequency poll (`REFRESH_MS = 5000`). That's a
+deliberate scope choice — switching to per-entity event subscription
+is a follow-up if the polling overhead becomes visible on huge installs.

custom_components/omni_pca/frontend/build.mjs

@@ -0,0 +1,44 @@
+// Bundle the omni_pca side panel into a single ESM file the HA static
+// path serves at /api/omni_pca/panel.js.
+//
+// Usage:
+//   node build.mjs           # one-shot production build
+//   node build.mjs --watch   # rebuild on source change
+//
+// Output is intentionally placed at ../www/panel.js so the Python side
+// (websocket.py:async_register_side_panel) finds it without extra
+// configuration. The frontend dir + the Python integration sit in the
+// same custom_components/omni_pca/ tree so end-users just install the
+// integration; no separate HACS package needed.
+
+import { build, context } from "esbuild";
+import { fileURLToPath } from "node:url";
+import { dirname, resolve } from "node:path";
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const watch = process.argv.includes("--watch");
+
+const opts = {
+  entryPoints: [resolve(__dirname, "src/omni-panel-programs.ts")],
+  bundle: true,
+  format: "esm",
+  target: "es2022",
+  minify: !watch,
+  sourcemap: watch ? "inline" : false,
+  outfile: resolve(__dirname, "../www/panel.js"),
+  // Lit ships its own ESM build; bundle it inline so the panel is a
+  // single self-contained file (matches how HACS-distributed cards work).
+  loader: { ".ts": "ts" },
+  banner: {
+    js: "// omni_pca side panel — generated by frontend/build.mjs. Edit src/, not this file.",
+  },
+};
+
+if (watch) {
+  const ctx = await context(opts);
+  await ctx.watch();
+  console.log("watching for changes…");
+} else {
+  await build(opts);
+  console.log("built ->", opts.outfile);
+}

custom_components/omni_pca/frontend/package-lock.json

@@ -0,0 +1,551 @@
+{
+  "name": "omni-pca-panel",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "omni-pca-panel",
+      "version": "1.0.0",
+      "dependencies": {
+        "lit": "^3.2.0"
+      },
+      "devDependencies": {
+        "esbuild": "^0.24.0",
+        "typescript": "^5.5.0"
+      }
+    },
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+      "cpu": [
+        "ppc64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "aix"
+      ],
+      "engines": {
+        "node": ">=18"
+      }
+    },
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custom_components/omni_pca/frontend/package.json

@@ -0,0 +1,18 @@
+{
+  "name": "omni-pca-panel",
+  "version": "1.0.0",
+  "description": "HA side panel for browsing HAI Omni Panel programs.",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "build": "node build.mjs",
+    "watch": "node build.mjs --watch"
+  },
+  "devDependencies": {
+    "esbuild": "^0.24.0",
+    "typescript": "^5.5.0"
+  },
+  "dependencies": {
+    "lit": "^3.2.0"
+  }
+}

custom_components/omni_pca/frontend/src/token-renderer.ts

@@ -0,0 +1,52 @@
+// Token-stream → DOM. Each TokenKind gets distinctive styling so the
+// structured-English programs read cleanly even at a glance.
+//
+// REF tokens are rendered as <button> nodes so they can dispatch a
+// "ref-click" event for the parent component to act on (filter the
+// list, jump to that entity's HA page, etc.).
+
+import { html, TemplateResult } from "lit";
+import { Token } from "./types.js";
+
+export function renderTokens(
+  tokens: Token[],
+  onRefClick?: (kind: string, id: number) => void,
+): TemplateResult {
+  return html`${tokens.map((t) => renderToken(t, onRefClick))}`;
+}
+
+function renderToken(
+  t: Token,
+  onRefClick?: (kind: string, id: number) => void,
+): TemplateResult {
+  switch (t.k) {
+    case "newline":
+      return html`<br />`;
+    case "indent":
+      // Convert leading spaces to a CSS class so the panel can switch
+      // indent styling (e.g. left border) without re-rendering tokens.
+      return html`<span class="indent">${t.t}</span>`;
+    case "keyword":
+      return html`<span class="keyword">${t.t}</span>`;
+    case "operator":
+      return html`<span class="operator">${t.t}</span>`;
+    case "value":
+      return html`<span class="value">${t.t}</span>`;
+    case "ref": {
+      const handler = onRefClick && t.ek && typeof t.ei === "number"
+        ? () => onRefClick(t.ek!, t.ei!)
+        : undefined;
+      return html`<button
+        type="button"
+        class="ref ref-${t.ek}"
+        title=${t.ek ?? ""}
+        @click=${handler}
+      >
+        <span class="ref-name">${t.t}</span>
+        ${t.s ? html`<span class="ref-state">${t.s}</span>` : ""}
+      </button>`;
+    }
+    default:
+      return html`<span>${t.t}</span>`;
+  }
+}

custom_components/omni_pca/frontend/src/types.ts

@@ -0,0 +1,737 @@
+// TS mirrors of the Phase-B websocket wire shapes. Short field names
+// match websocket.py's _tokens_to_json — keep these in sync if the
+// Python side changes.
+
+export interface Token {
+  /** "keyword" / "operator" / "ref" / "value" / "text" / "indent" / "newline" */
+  k: string;
+  /** Display text for this token. Empty for newline. */
+  t: string;
+  /** Object kind for REF tokens (zone / unit / area / thermostat / button / message / code / timeclock). */
+  ek?: string;
+  /** 1-based slot for REF tokens. */
+  ei?: number;
+  /** Live-state badge for REF tokens (e.g. "SECURE", "ON 60%"). */
+  s?: string;
+}
+
+export interface ProgramRow {
+  /** 1-based slot number. For chains, the head slot. */
+  slot: number;
+  /** "compact" or "chain". */
+  kind: string;
+  /** TIMED / EVENT / YEARLY / WHEN / AT / EVERY / REMARK / FREE. */
+  trigger_type: string;
+  /** One-line summary token stream. */
+  summary: Token[];
+  /** Flat ["unit:7", "zone:5", ...] for filter chips. */
+  references: string[];
+  condition_count: number;
+  action_count: number;
+}
+
+export interface ProgramListResponse {
+  programs: ProgramRow[];
+  total: number;
+  filtered_total: number;
+  offset: number;
+  limit: number;
+}
+
+export interface ProgramDetail {
+  slot: number;
+  kind: string;
+  trigger_type: string;
+  /** Full structured-English token stream. */
+  tokens: Token[];
+  references: string[];
+  /** For chain detail: every slot the chain spans. */
+  chain_slots?: number[];
+  /** Raw Program field values; included for compact-form programs so
+   *  the editor can seed its form from real data rather than defaults. */
+  fields?: ProgramFields;
+  /** For chain detail: per-member role + raw fields. Drives the
+   *  chain editor's row-per-slot rendering. */
+  chain_members?: Array<{
+    slot: number;
+    role: "head" | "condition" | "action";
+    fields: ProgramFields;
+  }>;
+}
+
+export interface ProgramListRequest {
+  type: "omni_pca/programs/list";
+  entry_id: string;
+  trigger_types?: string[];
+  references_entity?: string;
+  search?: string;
+  limit?: number;
+  offset?: number;
+}
+
+export interface ProgramGetRequest {
+  type: "omni_pca/programs/get";
+  entry_id: string;
+  slot: number;
+}
+
+export interface ProgramFireRequest {
+  type: "omni_pca/programs/fire";
+  entry_id: string;
+  slot: number;
+}
+
+// Raw Program dict — mirrors the dataclass on the Python side. Sent
+// over the wire by ``omni_pca/programs/write``; the websocket validates
+// each field's range and constructs the typed dataclass server-side.
+export interface ProgramFields {
+  prog_type: number;
+  cond?: number;
+  cond2?: number;
+  cmd?: number;
+  par?: number;
+  pr2?: number;
+  month?: number;
+  day?: number;
+  days?: number;
+  hour?: number;
+  minute?: number;
+  remark_id?: number | null;
+}
+
+export interface ProgramWriteRequest {
+  type: "omni_pca/programs/write";
+  entry_id: string;
+  slot: number;
+  program: ProgramFields;
+}
+
+export interface NamedObject {
+  index: number;
+  name: string;
+}
+
+export interface ObjectListResponse {
+  zones: NamedObject[];
+  units: NamedObject[];
+  areas: NamedObject[];
+  thermostats: NamedObject[];
+  buttons: NamedObject[];
+}
+
+// Command enum values we let the user pick from the editor. Mirrors the
+// most useful subset of omni_pca.commands.Command. The second element
+// is what object kind (if any) the command's pr2 parameter references —
+// drives the object picker's filter.
+export interface CommandOption {
+  value: number;
+  label: string;
+  ref_kind: "unit" | "zone" | "area" | "button" | null;
+}
+
+export const COMMAND_OPTIONS: CommandOption[] = [
+  { value: 0,  label: "Turn OFF unit",        ref_kind: "unit" },
+  { value: 1,  label: "Turn ON unit",         ref_kind: "unit" },
+  { value: 2,  label: "All OFF",              ref_kind: null },
+  { value: 3,  label: "All ON",               ref_kind: null },
+  { value: 4,  label: "Bypass zone",          ref_kind: "zone" },
+  { value: 5,  label: "Restore zone",         ref_kind: "zone" },
+  { value: 7,  label: "Execute button",       ref_kind: "button" },
+  { value: 9,  label: "Set unit level %",     ref_kind: "unit" },
+  { value: 48, label: "Disarm area",          ref_kind: "area" },
+  { value: 49, label: "Arm area Day",         ref_kind: "area" },
+  { value: 50, label: "Arm area Night",       ref_kind: "area" },
+  { value: 51, label: "Arm area Away",        ref_kind: "area" },
+  { value: 52, label: "Arm area Vacation",    ref_kind: "area" },
+];
+
+export function commandOptionFor(value: number): CommandOption | undefined {
+  return COMMAND_OPTIONS.find((c) => c.value === value);
+}
+
+// Days bitmask bits (matches omni_pca.programs.Days). Bit 0 is unused.
+export const DAY_BITS: ReadonlyArray<{ bit: number; label: string }> = [
+  { bit: 0x02, label: "Mon" },
+  { bit: 0x04, label: "Tue" },
+  { bit: 0x08, label: "Wed" },
+  { bit: 0x10, label: "Thu" },
+  { bit: 0x20, label: "Fri" },
+  { bit: 0x40, label: "Sat" },
+  { bit: 0x80, label: "Sun" },
+];
+
+// Program type constants (matches omni_pca.programs.ProgramType).
+export const PROGRAM_TYPE_TIMED = 1;
+export const PROGRAM_TYPE_EVENT = 2;
+export const PROGRAM_TYPE_YEARLY = 3;
+export const PROGRAM_TYPE_REMARK = 4;
+
+
+// --------------------------------------------------------------------------
+// Event-ID encode/decode for the EVENT-program editor.
+//
+// Mirrors the Python helpers in omni_pca.program_engine — the 16-bit
+// event_id uses different bit patterns per category. Each "category"
+// in the UI maps to a different chunk of the ID space.
+// --------------------------------------------------------------------------
+
+
+export type EventCategory =
+  | "button"   // USER_MACRO_BUTTON   (evt & 0xFF00) == 0x0000
+  | "zone"     // ZONE_STATE_CHANGE   (evt & 0xFC00) == 0x0400
+  | "unit"     // UNIT_STATE_CHANGE   (evt & 0xFC00) == 0x0800
+  | "fixed"    // hard-coded IDs (phone / AC power)
+  | "raw";     // anything else — show numeric
+
+export interface DecodedEvent {
+  category: EventCategory;
+  /** For "button": 1..255 */
+  button?: number;
+  /** For "zone": 1..256, plus state 0=secure / 1=not-ready / 2=trouble / 3=tamper */
+  zone?: number;
+  zoneState?: number;
+  /** For "unit": 1..511 plus on bool */
+  unit?: number;
+  unitOn?: boolean;
+  /** For "fixed": the literal event ID. */
+  fixedId?: number;
+  /** For "raw": the literal event ID we couldn't classify. */
+  raw?: number;
+}
+
+// Hand-rolled fixed IDs and labels (matches Python EVENT_* constants).
+export const FIXED_EVENTS: ReadonlyArray<{ id: number; label: string }> = [
+  { id: 768, label: "Phone line dead" },
+  { id: 769, label: "Phone ringing" },
+  { id: 770, label: "Phone off hook" },
+  { id: 771, label: "Phone on hook" },
+  { id: 772, label: "AC power lost" },
+  { id: 773, label: "AC power restored" },
+];
+
+const ZONE_STATE_LABELS = ["secure", "not ready", "trouble", "tamper"];
+
+export function decodeEventId(eventId: number): DecodedEvent {
+  // FIXED first — the bit patterns below would otherwise collapse
+  // 768..773 into the "zone state change" category since their top
+  // bits look the same.
+  if (FIXED_EVENTS.some((f) => f.id === eventId)) {
+    return { category: "fixed", fixedId: eventId };
+  }
+  if ((eventId & 0xFF00) === 0x0000) {
+    return { category: "button", button: eventId & 0xFF };
+  }
+  if ((eventId & 0xFC00) === 0x0400) {
+    const zs = eventId & 0x03FF;
+    return {
+      category: "zone",
+      zone: Math.floor(zs / 4) + 1,
+      zoneState: zs % 4,
+    };
+  }
+  if ((eventId & 0xFC00) === 0x0800) {
+    const us = eventId & 0x03FF;
+    return {
+      category: "unit",
+      unit: Math.floor(us / 2) + 1,
+      unitOn: (us & 1) === 1,
+    };
+  }
+  return { category: "raw", raw: eventId };
+}
+
+export function encodeEventId(ev: DecodedEvent): number {
+  switch (ev.category) {
+    case "button":
+      return (ev.button ?? 1) & 0xFF;
+    case "zone": {
+      const zone = (ev.zone ?? 1) - 1;
+      const state = (ev.zoneState ?? 0) & 0x03;
+      return 0x0400 | ((zone * 4 + state) & 0x03FF);
+    }
+    case "unit": {
+      const unit = (ev.unit ?? 1) - 1;
+      const on = ev.unitOn ? 1 : 0;
+      return 0x0800 | ((unit * 2 + on) & 0x03FF);
+    }
+    case "fixed":
+      return ev.fixedId ?? 768;
+    case "raw":
+    default:
+      return ev.raw ?? 0;
+  }
+}
+
+export function eventIdFromFields(fields: ProgramFields): number {
+  return ((fields.month ?? 0) << 8) | (fields.day ?? 0);
+}
+
+export function packEventIdIntoFields(
+  fields: ProgramFields, eventId: number,
+): ProgramFields {
+  return {
+    ...fields,
+    month: (eventId >> 8) & 0xFF,
+    day: eventId & 0xFF,
+  };
+}
+
+export function zoneStateLabel(state: number): string {
+  return ZONE_STATE_LABELS[state] ?? `state ${state}`;
+}
+
+
+// Month abbreviations for the YEARLY editor.
+export const MONTH_NAMES = [
+  "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+  "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
+];
+
+
+// --------------------------------------------------------------------------
+// Compact-form AND-IF condition encode/decode for the inline-conditions
+// editor (TIMED/EVENT/YEARLY cond + cond2 fields).
+//
+// Mirrors clsText.GetConditionalText (clsText.cs:2224-2274) and the
+// Python _emit_traditional_cond in program_renderer.py. Bit layout:
+//
+//   family = (cond >> 8) & 0xFC
+//   selector bit = (cond & 0x0200) — meaning depends on family
+//
+//   family 0x00 OTHER  — cond & 0x0F = enuMiscConditional (NONE=0,
+//                                     NEVER=1, LIGHT=2, DARK=3, ...)
+//   family 0x04 ZONE   — low 8 bits = zone index; selector bit
+//                        0=secure, 1=not ready
+//   family 0x08 CTRL   — low 9 bits = unit index; selector bit
+//                        0=OFF, 1=ON
+//   family 0x0C TIME   — low 8 bits = time-clock index; selector bit
+//                        0=disabled, 1=enabled
+//   family >= 0x10 SEC — (cond >> 8) & 0x0F = area, (cond >> 12) & 0x07 = mode
+//
+// cond == 0 means "no condition" (NONE).
+// --------------------------------------------------------------------------
+
+
+export type CondFamily =
+  | "none"   // cond = 0 — no inline condition
+  | "misc"   // OTHER family (NEVER, LIGHT, DARK, PHONE_*, AC_POWER_*, …)
+  | "zone"   // ZONE family — zone + secure/not-ready
+  | "unit"   // CTRL family — unit + on/off
+  | "time"   // TIME family — time-clock + enabled/disabled
+  | "sec";   // SEC family — area + security mode
+
+export interface DecodedCondition {
+  family: CondFamily;
+  /** misc-conditional index (0..15) — used when family == "misc". */
+  misc?: number;
+  /** Zone / unit / time-clock / area index — used by the named families. */
+  index?: number;
+  /** Selector bit: zone "not ready", unit "on", time-clock "enabled". */
+  active?: boolean;
+  /** SEC family security mode (0..7). */
+  mode?: number;
+}
+
+// MiscConditional enum (matches omni_pca.programs.MiscConditional).
+// Each entry: { value, label }. NONE renders as "always" and NEVER as
+// "never" — both common authoring patterns.
+export const MISC_CONDITIONALS: ReadonlyArray<{ value: number; label: string }> = [
+  { value: 0,  label: "always" },
+  { value: 1,  label: "never" },
+  { value: 2,  label: "it is light outside" },
+  { value: 3,  label: "it is dark outside" },
+  { value: 4,  label: "phone line is dead" },
+  { value: 5,  label: "phone is ringing" },
+  { value: 6,  label: "phone is off hook" },
+  { value: 7,  label: "phone is on hook" },
+  { value: 8,  label: "AC power is off" },
+  { value: 9,  label: "AC power is on" },
+  { value: 10, label: "battery is low" },
+  { value: 11, label: "battery is OK" },
+  { value: 12, label: "energy cost is low" },
+  { value: 13, label: "energy cost is mid" },
+  { value: 14, label: "energy cost is high" },
+  { value: 15, label: "energy cost is critical" },
+];
+
+// Security modes for the SEC family (matches enuSecurityMode order).
+export const SECURITY_MODE_NAMES: ReadonlyArray<{ value: number; label: string }> = [
+  { value: 0, label: "Off (disarmed)" },
+  { value: 1, label: "Day" },
+  { value: 2, label: "Night" },
+  { value: 3, label: "Away" },
+  { value: 4, label: "Vacation" },
+  { value: 5, label: "Day Instant" },
+  { value: 6, label: "Night Delayed" },
+];
+
+export function decodeCondition(cond: number): DecodedCondition {
+  if (cond === 0) return { family: "none" };
+  const family = (cond >> 8) & 0xFC;
+  const active = (cond & 0x0200) !== 0;
+  if (family === 0x00) {
+    return { family: "misc", misc: cond & 0x0F };
+  }
+  if (family === 0x04) {
+    return { family: "zone", index: cond & 0xFF, active };
+  }
+  if (family === 0x08) {
+    return { family: "unit", index: cond & 0x01FF, active };
+  }
+  if (family === 0x0C) {
+    return { family: "time", index: cond & 0xFF, active };
+  }
+  // SEC family (family >= 0x10): area in high nibble of upper byte,
+  // mode in top nibble.
+  return {
+    family: "sec",
+    index: (cond >> 8) & 0x0F,
+    mode: (cond >> 12) & 0x07,
+  };
+}
+
+export function encodeCondition(c: DecodedCondition): number {
+  switch (c.family) {
+    case "none":
+      return 0;
+    case "misc":
+      return (c.misc ?? 0) & 0x0F;  // family 0x00, low nibble = misc
+    case "zone": {
+      const idx = (c.index ?? 0) & 0xFF;
+      return 0x0400 | (c.active ? 0x0200 : 0) | idx;
+    }
+    case "unit": {
+      const idx = (c.index ?? 0) & 0x01FF;
+      return 0x0800 | (c.active ? 0x0200 : 0) | idx;
+    }
+    case "time": {
+      const idx = (c.index ?? 0) & 0xFF;
+      return 0x0C00 | (c.active ? 0x0200 : 0) | idx;
+    }
+    case "sec": {
+      const area = (c.index ?? 1) & 0x0F;
+      const mode = (c.mode ?? 0) & 0x07;
+      return (mode << 12) | (area << 8);
+    }
+  }
+}
+
+
+// --------------------------------------------------------------------------
+// Clausal chain (multi-record) editor types
+// --------------------------------------------------------------------------
+
+
+/** ProgramType values for the chain head/body/tail records. */
+export const PROGRAM_TYPE_WHEN = 5;
+export const PROGRAM_TYPE_AT = 6;
+export const PROGRAM_TYPE_EVERY = 7;
+export const PROGRAM_TYPE_AND = 8;
+export const PROGRAM_TYPE_OR = 9;
+export const PROGRAM_TYPE_THEN = 10;
+
+/** Roles assigned by the backend's chain_members payload. */
+export type ChainMemberRole = "head" | "condition" | "action";
+
+export interface ChainMember {
+  slot: number;
+  role: ChainMemberRole;
+  fields: ProgramFields;
+}
+
+/** Decoded view of a Traditional AND/OR record's condition.
+ *
+ * AND records use the SAME family encoding as compact-form cond, but
+ * the bytes land in different ProgramFields slots:
+ *
+ *   family   = fields.cond & 0xFF              (disk byte 1)
+ *   instance = (fields.cond2 >> 8) & 0xFF      (disk byte 3)
+ *
+ * The selector bit (`0x0200`) doesn't apply to AND records the same
+ * way — instead the family byte's bit 1 (0x02) carries the
+ * secure/not-ready or off/on selector. For example:
+ *   0x04 = ZONE secure         0x06 = ZONE not-ready
+ *   0x08 = CTRL off            0x0A = CTRL on
+ *   0x0C = TIME disabled       0x0E = TIME enabled
+ */
+export function decodeAndCondition(fields: ProgramFields): DecodedCondition {
+  const family = (fields.cond ?? 0) & 0xFF;
+  const instance = ((fields.cond2 ?? 0) >> 8) & 0xFF;
+  const familyMajor = family & 0xFC;
+  const selector = (family & 0x02) !== 0;
+  if (family === 0 && instance === 0) return { family: "none" };
+  if (familyMajor === 0x00) return { family: "misc", misc: family & 0x0F };
+  if (familyMajor === 0x04) return { family: "zone", index: instance, active: selector };
+  if (familyMajor === 0x08) return { family: "unit", index: instance, active: selector };
+  if (familyMajor === 0x0C) return { family: "time", index: instance, active: selector };
+  // SEC: high nibble of family = mode, low nibble = area.
+  return {
+    family: "sec",
+    index: family & 0x0F,
+    mode: (family >> 4) & 0x07,
+  };
+}
+
+/** Re-encode a DecodedCondition into the cond/cond2 fields of an
+ *  AND/OR record. Returns a partial ProgramFields with cond + cond2
+ *  set; the caller should merge with the rest of the record (cmd/par/
+ *  etc. stay zero for Traditional AND records).
+ */
+export function encodeAndCondition(c: DecodedCondition): {
+  cond: number; cond2: number;
+} {
+  switch (c.family) {
+    case "none":
+      return { cond: 0, cond2: 0 };
+    case "misc":
+      return { cond: (c.misc ?? 0) & 0x0F, cond2: 0 };
+    case "zone": {
+      const family = 0x04 | (c.active ? 0x02 : 0);
+      return { cond: family, cond2: ((c.index ?? 0) & 0xFF) << 8 };
+    }
+    case "unit": {
+      const family = 0x08 | (c.active ? 0x02 : 0);
+      return { cond: family, cond2: ((c.index ?? 0) & 0xFF) << 8 };
+    }
+    case "time": {
+      const family = 0x0C | (c.active ? 0x02 : 0);
+      return { cond: family, cond2: ((c.index ?? 0) & 0xFF) << 8 };
+    }
+    case "sec": {
+      const area = (c.index ?? 1) & 0x0F;
+      const mode = (c.mode ?? 0) & 0x07;
+      const family = (mode << 4) | area;
+      return { cond: family, cond2: 0 };
+    }
+  }
+}
+
+/** True if the AND/OR record's op byte indicates a Structured-OP
+ *  comparison (TEMP > 70 etc.) rather than the Traditional bit-packed
+ *  condition. Structured records use entirely different field
+ *  semantics; the editor in this pass renders them read-only.
+ *
+ *  OP byte lives at fields.cond >> 8 (disk byte 2). 0 = Traditional;
+ *  1..9 = Structured (CondOP enum).
+ */
+export function isStructuredAnd(fields: ProgramFields): boolean {
+  return (((fields.cond ?? 0) >> 8) & 0xFF) !== 0;
+}
+
+/** Build a fresh empty AND record (Traditional, NEVER condition). */
+export function emptyAndRecord(): ProgramFields {
+  return {
+    prog_type: PROGRAM_TYPE_AND,
+    cond: 0x01,    // family OTHER (0x00) + misc NEVER (0x01)
+    cond2: 0, cmd: 0, par: 0, pr2: 0,
+    month: 0, day: 0, days: 0, hour: 0, minute: 0,
+  };
+}
+
+/** Build a fresh empty OR record. Same shape as AND with a different
+ *  prog_type — semantically starts a new group in the conditions list.
+ */
+export function emptyOrRecord(): ProgramFields {
+  return { ...emptyAndRecord(), prog_type: PROGRAM_TYPE_OR };
+}
+
+/** Build a fresh empty THEN action record (Turn OFF unit 1). */
+export function emptyThenRecord(firstUnit: number = 1): ProgramFields {
+  return {
+    prog_type: PROGRAM_TYPE_THEN,
+    cmd: 0,        // UNIT_OFF
+    par: 0,
+    pr2: firstUnit,
+    cond: 0, cond2: 0,
+    month: 0, day: 0, days: 0, hour: 0, minute: 0,
+  };
+}
+
+
+// --------------------------------------------------------------------------
+// Structured-OP AND record editing.
+//
+// When ``and_op`` (= ``(cond >> 8) & 0xFF``) is non-zero, the record
+// encodes ``Arg1 OP Arg2`` where Arg1 and Arg2 are typed references
+// (Zone, Unit, Thermostat, Area, TimeDate, Constant) plus per-type
+// field selectors. This is fundamentally a different shape from the
+// Traditional encoding handled by decodeAndCondition above.
+//
+// Wire layout (from programs.py decoders + clsProgram.cs):
+//
+//   cond  high byte (>>8)  = and_op           (CondOP)
+//   cond  low byte  (& FF) = and_arg1_argtype (CondArgType)
+//   cond2 (whole u16)      = and_arg1_ix      (object index or 0)
+//   cmd                    = and_arg1_field   (per-type field selector)
+//   par                    = and_arg2_argtype (CondArgType — usually Constant)
+//   pr2                    = and_arg2_ix      (constant value OR second object idx)
+//   month                  = and_arg2_field   (per-type field selector for arg2)
+//   day, days              = and_compconst    (BE u16 — extra constant, rarely used)
+//
+// Editor cuts:
+//   * Arg1 and Arg2 both restricted to Constant / Zone / Unit /
+//     Thermostat / Area / TimeDate. Anything else (Aux / Audio /
+//     System / etc.) stays read-only.
+//   * Non-zero CompConst stays read-only (rarely used; preserved on
+//     save).
+// --------------------------------------------------------------------------
+
+
+// CondOP enum (matches omni_pca.programs.CondOP). 0=Traditional is
+// excluded from the editor — picking it would switch to Traditional
+// editing semantics.
+export const COND_OPS: ReadonlyArray<{ value: number; label: string }> = [
+  { value: 1, label: "==" },
+  { value: 2, label: "!=" },
+  { value: 3, label: "<" },
+  { value: 4, label: ">" },
+  { value: 5, label: "is odd" },
+  { value: 6, label: "is even" },
+  { value: 7, label: "is multiple of" },
+  { value: 8, label: "in (bitmask)" },
+  { value: 9, label: "not in (bitmask)" },
+];
+
+/** True iff the operator only uses Arg1 (no Arg2). */
+export function isUnaryOp(op: number): boolean {
+  return op === 5 || op === 6;  // ODD, EVEN
+}
+
+// CondArgType enum (matches omni_pca.programs.CondArgType). Only the
+// editor-supported subset; full list is in programs.py.
+export const ARG_TYPES: ReadonlyArray<{
+  value: number; label: string; kind: string | null;
+}> = [
+  { value: 0,  label: "Constant",       kind: null },
+  { value: 2,  label: "Zone",           kind: "zone" },
+  { value: 3,  label: "Unit",           kind: "unit" },
+  { value: 4,  label: "Thermostat",     kind: "thermostat" },
+  { value: 6,  label: "Area",           kind: "area" },
+  { value: 7,  label: "Time / Date",    kind: null },  // no object picker
+];
+
+export function isEditableArg1Type(argtype: number): boolean {
+  return [2, 3, 4, 6, 7].includes(argtype);
+}
+
+export function argTypeKind(argtype: number): string | null {
+  const a = ARG_TYPES.find((x) => x.value === argtype);
+  return a ? a.kind : null;
+}
+
+// Per-Arg1Type field menus. Numbers match omni_pca.programs enums
+// (enuZoneField / enuUnitField / enuThermostatField / enuTimeDateField).
+export const FIELDS_BY_TYPE: Readonly<Record<number, ReadonlyArray<{
+  value: number; label: string;
+}>>> = {
+  // Zone (argtype 2) — enuZoneField
+  2: [
+    { value: 1, label: "Loop reading" },
+    { value: 2, label: "Current state" },
+    { value: 3, label: "Arming state" },
+    { value: 4, label: "Alarm state" },
+  ],
+  // Unit (argtype 3) — enuUnitField
+  3: [
+    { value: 1, label: "Current state" },
+    { value: 2, label: "Previous state" },
+    { value: 3, label: "Timer" },
+    { value: 4, label: "Level" },
+  ],
+  // Thermostat (argtype 4) — enuThermostatField
+  4: [
+    { value: 1,  label: "Current temperature" },
+    { value: 2,  label: "Heat setpoint" },
+    { value: 3,  label: "Cool setpoint" },
+    { value: 4,  label: "System mode" },
+    { value: 5,  label: "Fan mode" },
+    { value: 6,  label: "Hold mode" },
+    { value: 7,  label: "Freeze alarm" },
+    { value: 8,  label: "Comm error" },
+    { value: 9,  label: "Humidity" },
+    { value: 10, label: "Humidify setpoint" },
+    { value: 11, label: "Dehumidify setpoint" },
+    { value: 12, label: "Outdoor temperature" },
+    { value: 13, label: "System status" },
+  ],
+  // Area (argtype 6) — single useful field
+  6: [
+    { value: 1, label: "Security mode" },
+  ],
+  // TimeDate (argtype 7) — enuTimeDateField
+  7: [
+    { value: 2,  label: "Year" },
+    { value: 3,  label: "Month" },
+    { value: 4,  label: "Day" },
+    { value: 5,  label: "Day of week (1=Mon..7=Sun)" },
+    { value: 6,  label: "Time (minutes since midnight)" },
+    { value: 8,  label: "Hour" },
+    { value: 9,  label: "Minute" },
+  ],
+};
+
+export interface DecodedStructuredAnd {
+  op: number;              // CondOP value (1..9)
+  arg1Type: number;        // CondArgType
+  arg1Ix: number;          // 1-based object index (0 for TimeDate)
+  arg1Field: number;       // per-type field
+  arg2Type: number;        // CondArgType (locked to Constant in editor)
+  arg2Ix: number;          // constant value OR second object index
+  arg2Field: number;       // per-type field (usually 0 for constants)
+  compConst: number;       // extra constant; preserved verbatim
+}
+
+export function decodeStructuredAnd(fields: ProgramFields): DecodedStructuredAnd {
+  return {
+    op:        ((fields.cond ?? 0) >> 8) & 0xFF,
+    arg1Type:  (fields.cond ?? 0) & 0xFF,
+    arg1Ix:    fields.cond2 ?? 0,
+    arg1Field: fields.cmd ?? 0,
+    arg2Type:  fields.par ?? 0,
+    arg2Ix:    fields.pr2 ?? 0,
+    arg2Field: fields.month ?? 0,
+    compConst: ((fields.day ?? 0) << 8) | (fields.days ?? 0),
+  };
+}
+
+export function encodeStructuredAnd(s: DecodedStructuredAnd): Partial<ProgramFields> {
+  return {
+    cond:  ((s.op & 0xFF) << 8) | (s.arg1Type & 0xFF),
+    cond2: s.arg1Ix & 0xFFFF,
+    cmd:   s.arg1Field & 0xFF,
+    par:   s.arg2Type & 0xFF,
+    pr2:   s.arg2Ix & 0xFFFF,
+    month: s.arg2Field & 0xFF,
+    day:   (s.compConst >> 8) & 0xFF,
+    days:  s.compConst & 0xFF,
+  };
+}
+
+/** True iff the structured AND record is in a shape the editor can
+ *  fully drive. Arg1 must be one of the editable reference types;
+ *  Arg2 must be Constant or one of the editable reference types
+ *  (unary operators ignore Arg2 entirely). Non-zero compConst stays
+ *  read-only — preserved on save but not exposed as a form control. */
+export function isEditableStructuredAnd(s: DecodedStructuredAnd): boolean {
+  if (!isEditableArg1Type(s.arg1Type)) return false;
+  if (!isUnaryOp(s.op) && s.arg2Type !== 0 && !isEditableArg1Type(s.arg2Type)) {
+    return false;
+  }
+  if (s.compConst !== 0) return false;
+  return true;
+}
+
+/** HA's hass object — minimal surface we use. */
+export interface Hass {
+  connection: {
+    sendMessagePromise<T>(msg: unknown): Promise<T>;
+    subscribeEvents<T>(
+      callback: (event: T) => void,
+      eventType: string,
+    ): Promise<() => Promise<void>>;
+  };
+  config?: {
+    entries?: Record<string, unknown>;
+  };
+  // Whole hass is much larger; we only touch what we need.
+}

custom_components/omni_pca/frontend/tsconfig.json

@@ -0,0 +1,20 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ES2022",
+    "moduleResolution": "bundler",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "experimentalDecorators": true,
+    "useDefineForClassFields": false,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noFallthroughCasesInSwitch": true,
+    "isolatedModules": true,
+    "allowImportingTsExtensions": false,
+    "noEmit": true,
+    "lib": ["ES2022", "DOM", "DOM.Iterable"]
+  },
+  "include": ["src/**/*.ts"]
+}

custom_components/omni_pca/manifest.json

@@ -1,13 +1,13 @@
 {
     "domain": "omni_pca",
     "name": "HAI/Leviton Omni Panel",
-    "version": "2026.5.10",
-    "iot_class": "local_push",
-    "config_flow": true,
-    "dependencies": [],
     "codeowners": ["@rsp2k"],
-    "requirements": ["omni-pca==2026.5.10"],
-    "documentation": "https://git.supported.systems/warehack.ing/omni-pca",
-    "issue_tracker": "https://git.supported.systems/warehack.ing/omni-pca/issues",
-    "integration_type": "hub"
+    "config_flow": true,
+    "dependencies": ["http", "websocket_api"],
+    "documentation": "https://hai-omni-pro-ii.warehack.ing/",
+    "integration_type": "hub",
+    "iot_class": "local_push",
+    "issue_tracker": "https://github.com/rsp2k/omni-pca/issues",
+    "requirements": ["omni-pca==2026.5.16"],
+    "version": "2026.5.16"
 }

custom_components/omni_pca/sensor.py

@@ -69,6 +69,7 @@ async def async_setup_entry(
 
     entities.append(OmniSystemModelSensor(coordinator))
     entities.append(OmniLastEventSensor(coordinator))
+    entities.append(OmniProgramsSensor(coordinator))
 
     async_add_entities(entities)
 
@@ -261,3 +262,55 @@ class OmniLastEventSensor(
             if hasattr(ev, key):
                 result[key] = getattr(ev, key)
         return result
+
+
+class OmniProgramsSensor(
+    CoordinatorEntity[OmniDataUpdateCoordinator], SensorEntity
+):
+    """Diagnostic sensor exposing the panel's automation programs.
+
+    State value is the count of defined programs. The ``programs``
+    attribute carries a list of per-program summaries — a stable,
+    JSON-serializable view automations and template sensors can read.
+    """
+
+    _attr_has_entity_name = True
+    _attr_entity_category = EntityCategory.DIAGNOSTIC
+    _attr_state_class = SensorStateClass.MEASUREMENT
+
+    def __init__(self, coordinator: OmniDataUpdateCoordinator) -> None:
+        super().__init__(coordinator)
+        self._attr_unique_id = f"{coordinator.unique_id}-programs"
+        self._attr_name = "Panel Programs"
+        self._attr_device_info = coordinator.device_info
+
+    @property
+    def native_value(self) -> int:
+        return len(self.coordinator.data.programs)
+
+    @property
+    def extra_state_attributes(self) -> dict[str, Any]:
+        from omni_pca.programs import ProgramType
+
+        summaries: list[dict[str, Any]] = []
+        for slot in sorted(self.coordinator.data.programs):
+            p = self.coordinator.data.programs[slot]
+            try:
+                type_name = ProgramType(p.prog_type).name
+            except ValueError:
+                type_name = f"UNKNOWN({p.prog_type})"
+            summaries.append(
+                {
+                    "slot": slot,
+                    "type": type_name,
+                    "cmd": p.cmd,
+                    "par": p.par,
+                    "pr2": p.pr2,
+                    "month": p.month,
+                    "day": p.day,
+                    "days": p.days,
+                    "hour": p.hour,
+                    "minute": p.minute,
+                }
+            )
+        return {"programs": summaries}

custom_components/omni_pca/strings.json

@@ -3,11 +3,14 @@
         "step": {
             "user": {
                 "title": "Connect to your Omni panel",
-                "description": "Enter the IP/hostname of your HAI/Leviton Omni Pro II controller and the 32-character hex Controller Key. Use `omni-pca decode-pca <file>.pca --field controller_key` to extract the key from a PC Access export.",
+                "description": "Enter the IP/hostname of your HAI/Leviton Omni Pro II controller and the 32-character hex Controller Key. Run omni-pca decode-pca with the --field controller_key option on a PC Access export file to extract the key. Optionally provide a path to a saved .pca file to load panel programs from disk instead of streaming them from the controller.",
                 "data": {
                     "host": "Host",
                     "port": "Port",
-                    "controller_key": "Controller Key (32 hex chars)"
+                    "controller_key": "Controller Key (32 hex chars)",
+                    "transport": "Transport",
+                    "pca_path": ".pca file path (optional)",
+                    "pca_key": ".pca per-install key (integer; 0 if plain-text)"
                 }
             },
             "reauth_confirm": {
@@ -22,6 +25,8 @@
             "cannot_connect": "Could not reach the panel. Check the host, port, and that TCP/4369 is open.",
             "invalid_auth": "The Controller Key was rejected by the panel.",
             "invalid_key": "Controller Key must be exactly 32 hexadecimal characters (16 bytes).",
+            "pca_not_found": "No file at the supplied .pca path.",
+            "pca_decode_failed": "Could not decode the .pca file. Check the per-install key.",
             "unknown": "An unexpected error occurred. Check the Home Assistant logs."
         },
         "abort": {

custom_components/omni_pca/translations/en.json

@@ -3,11 +3,14 @@
         "step": {
             "user": {
                 "title": "Connect to your Omni panel",
-                "description": "Enter the IP/hostname of your HAI/Leviton Omni Pro II controller and the 32-character hex Controller Key. Use `omni-pca decode-pca <file>.pca --field controller_key` to extract the key from a PC Access export.",
+                "description": "Enter the IP/hostname of your HAI/Leviton Omni Pro II controller and the 32-character hex Controller Key. Run omni-pca decode-pca with the --field controller_key option on a PC Access export file to extract the key. Optionally provide a path to a saved .pca file to load panel programs from disk instead of streaming them from the controller.",
                 "data": {
                     "host": "Host",
                     "port": "Port",
-                    "controller_key": "Controller Key (32 hex chars)"
+                    "controller_key": "Controller Key (32 hex chars)",
+                    "transport": "Transport",
+                    "pca_path": ".pca file path (optional)",
+                    "pca_key": ".pca per-install key (integer; 0 if plain-text)"
                 }
             },
             "reauth_confirm": {
@@ -22,6 +25,8 @@
             "cannot_connect": "Could not reach the panel. Check the host, port, and that TCP/4369 is open.",
             "invalid_auth": "The Controller Key was rejected by the panel.",
             "invalid_key": "Controller Key must be exactly 32 hexadecimal characters (16 bytes).",
+            "pca_not_found": "No file at the supplied .pca path.",
+            "pca_decode_failed": "Could not decode the .pca file. Check the per-install key.",
             "unknown": "An unexpected error occurred. Check the Home Assistant logs."
         },
         "abort": {

custom_components/omni_pca/websocket.py

@@ -0,0 +1,966 @@
+"""HA websocket commands for the program viewer.
+
+The frontend talks to the integration via Home Assistant's standard
+websocket API. We register three commands here, all namespaced under
+``omni_pca/programs/``:
+
+* ``omni_pca/programs/list`` — paginated, filterable summary list. Each
+  result row carries the token stream for the one-line summary plus the
+  metadata the frontend needs to filter and drill in.
+* ``omni_pca/programs/get`` — full detail for a single slot. Returns
+  the structured-English token stream for the compact form or the
+  full clausal chain.
+* ``omni_pca/programs/fire`` — send ``Command.EXECUTE_PROGRAM`` over
+  the wire to ask the panel to run a program now. Returns success/error.
+
+All commands take an ``entry_id`` so multi-panel installs can address
+the right coordinator. The frontend's panel UI uses HA's `<ha-conn>`
+WS client; this module just produces JSON-safe dicts.
+"""
+
+from __future__ import annotations
+
+from dataclasses import asdict
+from typing import TYPE_CHECKING, Any
+
+import voluptuous as vol
+from homeassistant.components import websocket_api
+from homeassistant.core import HomeAssistant, callback
+
+from omni_pca.commands import Command
+from omni_pca.program_engine import ClausalChain, build_chains
+from omni_pca.program_renderer import (
+    NameResolver,
+    ProgramRenderer,
+    StateResolver,
+    Token,
+)
+from omni_pca.programs import Program, ProgramType
+
+from .const import DOMAIN
+
+if TYPE_CHECKING:
+    from .coordinator import OmniDataUpdateCoordinator
+
+
+# --------------------------------------------------------------------------
+# Coordinator-backed resolvers
+# --------------------------------------------------------------------------
+
+
+class _CoordinatorNameResolver:
+    """Resolve object names from coordinator-discovered topology.
+
+    The coordinator's :class:`OmniData` stores ``zones`` / ``units`` /
+    ``areas`` / ``thermostats`` / ``buttons`` as dicts of typed
+    properties dataclasses (each with a ``name`` attribute). For
+    ``message`` / ``code`` / ``timeclock`` we don't track HA-side
+    properties — fall through to ``None`` so the renderer generates
+    ``"Message 5"``-style labels.
+    """
+
+    def __init__(self, coordinator: "OmniDataUpdateCoordinator") -> None:
+        self._coordinator = coordinator
+
+    def name_of(self, kind: str, index: int) -> str | None:
+        data = self._coordinator.data
+        if data is None:
+            return None
+        bucket = {
+            "zone": data.zones,
+            "unit": data.units,
+            "area": data.areas,
+            "thermostat": data.thermostats,
+            "button": data.buttons,
+        }.get(kind)
+        if bucket is None:
+            return None
+        props = bucket.get(index)
+        if props is None:
+            return None
+        return getattr(props, "name", None) or None
+
+
+class _CoordinatorStateResolver:
+    """Live-state overlay using the coordinator's *_status maps.
+
+    The status dicts update on every poll *and* are patched in-place
+    when the event listener decodes a push event, so each websocket
+    call sees the freshest available state without a round-trip to
+    the panel.
+    """
+
+    _AREA_MODES: dict[int, str] = {
+        0: "Off", 1: "Day", 2: "Night", 3: "Away",
+        4: "Vacation", 5: "Day Instant", 6: "Night Delayed",
+    }
+
+    def __init__(self, coordinator: "OmniDataUpdateCoordinator") -> None:
+        self._coordinator = coordinator
+
+    def state_of(self, kind: str, index: int) -> str | None:
+        data = self._coordinator.data
+        if data is None:
+            return None
+        if kind == "zone":
+            status = data.zone_status.get(index)
+            if status is None:
+                return None
+            if status.is_bypassed:
+                return "BYPASSED"
+            return {0: "SECURE", 1: "NOT READY", 2: "TROUBLE", 3: "TAMPER"}.get(
+                status.current_state, f"state {status.current_state}",
+            )
+        if kind == "unit":
+            status = data.unit_status.get(index)
+            if status is None:
+                return None
+            if status.state == 0:
+                return "OFF"
+            if status.state >= 100:
+                return f"ON {status.state - 100}%"
+            return "ON"
+        if kind == "area":
+            status = data.area_status.get(index)
+            if status is None:
+                return None
+            return self._AREA_MODES.get(status.mode, f"mode {status.mode}")
+        if kind == "thermostat":
+            status = data.thermostat_status.get(index)
+            if status is None or status.temperature_raw == 0:
+                return None
+            return f"{status.temperature_raw // 2 - 40}°F"
+        return None
+
+
+# --------------------------------------------------------------------------
+# Token serialisation + reference extraction
+# --------------------------------------------------------------------------
+
+
+def _tokens_to_json(tokens: list[Token]) -> list[dict[str, Any]]:
+    """Serialise a Token list to plain dicts the websocket layer can JSON.
+
+    ``dataclasses.asdict`` would also work but produces ``None`` keys for
+    fields irrelevant to the token's kind; we omit those explicitly so
+    the wire format stays compact and the frontend sees clean shapes.
+    """
+    out: list[dict[str, Any]] = []
+    for t in tokens:
+        d: dict[str, Any] = {"k": t.kind, "t": t.text}
+        if t.entity_kind is not None:
+            d["ek"] = t.entity_kind
+        if t.entity_id is not None:
+            d["ei"] = t.entity_id
+        if t.state is not None:
+            d["s"] = t.state
+        out.append(d)
+    return out
+
+
+def _extract_references(tokens: list[Token]) -> list[str]:
+    """Collect distinct ``"<kind>:<id>"`` references from a token stream.
+
+    Used to populate each list-row's ``references`` field so the
+    frontend can filter on "involves this entity" without re-parsing
+    the tokens. Returns a deduplicated, stable-ordered list.
+    """
+    seen: dict[str, None] = {}
+    for t in tokens:
+        if t.entity_kind and t.entity_id is not None:
+            seen[f"{t.entity_kind}:{t.entity_id}"] = None
+    return list(seen.keys())
+
+
+# --------------------------------------------------------------------------
+# Helper: pick a coordinator + build the renderer
+# --------------------------------------------------------------------------
+
+
+def _coordinator_for_entry(
+    hass: HomeAssistant, entry_id: str,
+) -> "OmniDataUpdateCoordinator | None":
+    return hass.data.get(DOMAIN, {}).get(entry_id)
+
+
+def _build_renderer(coordinator: "OmniDataUpdateCoordinator") -> ProgramRenderer:
+    return ProgramRenderer(
+        names=_CoordinatorNameResolver(coordinator),
+        state=_CoordinatorStateResolver(coordinator),
+    )
+
+
+def _classify_trigger(p: Program) -> str:
+    """Stable string label for the trigger type — used in filter chips."""
+    try:
+        return ProgramType(p.prog_type).name
+    except ValueError:
+        return f"UNKNOWN_{p.prog_type}"
+
+
+# --------------------------------------------------------------------------
+# Websocket commands
+# --------------------------------------------------------------------------
+
+
+@websocket_api.websocket_command(
+    {
+        vol.Required("type"): "omni_pca/programs/list",
+        vol.Required("entry_id"): str,
+        vol.Optional("trigger_types"): [str],
+        vol.Optional("references_entity"): str,   # e.g. "zone:5"
+        vol.Optional("search"): str,
+        vol.Optional("limit"): vol.All(int, vol.Range(min=1, max=1500)),
+        vol.Optional("offset"): vol.All(int, vol.Range(min=0)),
+    }
+)
+@websocket_api.async_response
+async def _ws_list_programs(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: dict[str, Any],
+) -> None:
+    """Paginated list of programs with filters applied.
+
+    Returns rows containing the one-line summary tokens plus the
+    metadata needed for filter UI (trigger type, references). The
+    frontend renders the summary inline; clicking a row triggers a
+    follow-up ``programs/get`` for the full detail.
+    """
+    coordinator = _coordinator_for_entry(hass, msg["entry_id"])
+    if coordinator is None:
+        connection.send_error(msg["id"], "not_found", "panel not configured")
+        return
+
+    renderer = _build_renderer(coordinator)
+    programs = coordinator.data.programs if coordinator.data else {}
+    # Clausal chains span multiple slots — group them so each chain
+    # appears once instead of one row per slot.
+    chains_by_head_slot = {
+        c.head.slot: c for c in build_chains(tuple(programs.values()))
+    }
+    consumed_chain_slots: set[int] = set()
+    for chain in chains_by_head_slot.values():
+        if chain.head.slot is not None:
+            consumed_chain_slots.add(chain.head.slot)
+        for cond in chain.conditions:
+            if cond.slot is not None:
+                consumed_chain_slots.add(cond.slot)
+        for action in chain.actions:
+            if action.slot is not None:
+                consumed_chain_slots.add(action.slot)
+
+    rows: list[dict[str, Any]] = []
+    for slot in sorted(programs):
+        if slot in chains_by_head_slot:
+            chain = chains_by_head_slot[slot]
+            summary = renderer.summarize_chain(chain)
+            rows.append({
+                "slot": slot,
+                "kind": "chain",
+                "trigger_type": _classify_trigger(chain.head),
+                "summary": _tokens_to_json(summary),
+                "references": _extract_references(summary),
+                "condition_count": len(chain.conditions),
+                "action_count": len(chain.actions),
+            })
+            continue
+        if slot in consumed_chain_slots:
+            continue  # part of a chain we already rendered
+        program = programs[slot]
+        summary = renderer.summarize_program(program)
+        rows.append({
+            "slot": slot,
+            "kind": "compact",
+            "trigger_type": _classify_trigger(program),
+            "summary": _tokens_to_json(summary),
+            "references": _extract_references(summary),
+            "condition_count": (1 if program.cond else 0) + (1 if program.cond2 else 0),
+            "action_count": 1,
+        })
+
+    # Filtering happens after rendering so the filter UI can use the
+    # final, name-resolved text. Trade-off: O(N) per request even when
+    # filters narrow the result; with N ≤ 1500 this is fine in practice.
+    trigger_types: list[str] | None = msg.get("trigger_types")
+    references_entity: str | None = msg.get("references_entity")
+    search: str | None = msg.get("search")
+    if search:
+        search_lower = search.lower()
+    filtered = []
+    for row in rows:
+        if trigger_types and row["trigger_type"] not in trigger_types:
+            continue
+        if references_entity and references_entity not in row["references"]:
+            continue
+        if search:
+            row_text = "".join(
+                tok["t"] for tok in row["summary"] if tok.get("k") != "newline"
+            ).lower()
+            if search_lower not in row_text:
+                continue
+        filtered.append(row)
+
+    total = len(rows)
+    filtered_total = len(filtered)
+    offset = msg.get("offset", 0)
+    limit = msg.get("limit", 200)
+    page = filtered[offset : offset + limit]
+
+    connection.send_result(msg["id"], {
+        "programs": page,
+        "total": total,
+        "filtered_total": filtered_total,
+        "offset": offset,
+        "limit": limit,
+    })
+
+
+@websocket_api.websocket_command(
+    {
+        vol.Required("type"): "omni_pca/programs/get",
+        vol.Required("entry_id"): str,
+        vol.Required("slot"): vol.All(int, vol.Range(min=1, max=1500)),
+    }
+)
+@websocket_api.async_response
+async def _ws_get_program(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: dict[str, Any],
+) -> None:
+    """Full structured-English detail for one slot.
+
+    If the requested slot is the head of a clausal chain we return the
+    rendered chain; if it's a continuation slot (an AND/OR/THEN in the
+    middle of a chain) we still return the chain that contains it, so
+    the frontend always shows the complete program even when the user
+    clicks an interior slot.
+    """
+    coordinator = _coordinator_for_entry(hass, msg["entry_id"])
+    if coordinator is None:
+        connection.send_error(msg["id"], "not_found", "panel not configured")
+        return
+
+    renderer = _build_renderer(coordinator)
+    programs = coordinator.data.programs if coordinator.data else {}
+    target = programs.get(msg["slot"])
+    if target is None:
+        connection.send_error(msg["id"], "not_found", "no program at that slot")
+        return
+
+    chains = build_chains(tuple(programs.values()))
+    containing_chain: ClausalChain | None = None
+    for chain in chains:
+        members = (
+            (chain.head,) + chain.conditions + chain.actions
+        )
+        if any(m.slot == msg["slot"] for m in members):
+            containing_chain = chain
+            break
+
+    if containing_chain is not None:
+        tokens = renderer.render_chain(containing_chain)
+        connection.send_result(msg["id"], {
+            "slot": containing_chain.head.slot,
+            "kind": "chain",
+            "trigger_type": _classify_trigger(containing_chain.head),
+            "tokens": _tokens_to_json(tokens),
+            "references": _extract_references(tokens),
+            "chain_slots": [m.slot for m in members if m.slot is not None],
+            # Per-member raw fields + role so the editor can render
+            # an editable form for each line of the clausal chain.
+            # role is "head" / "condition" / "action".
+            "chain_members": [
+                {
+                    "slot": m.slot,
+                    "role": (
+                        "head" if m is containing_chain.head
+                        else "action" if m in containing_chain.actions
+                        else "condition"
+                    ),
+                    "fields": _program_to_fields(m),
+                }
+                for m in members if m.slot is not None
+            ],
+        })
+        return
+
+    tokens = renderer.render_program(target)
+    connection.send_result(msg["id"], {
+        "slot": msg["slot"],
+        "kind": "compact",
+        "trigger_type": _classify_trigger(target),
+        "tokens": _tokens_to_json(tokens),
+        "references": _extract_references(tokens),
+        # Raw program fields for the editor to seed its form. The
+        # rendered token stream is for *display*; the form needs the
+        # underlying integer values to round-trip cleanly.
+        "fields": _program_to_fields(target),
+    })
+
+
+def _program_to_fields(program: Program) -> dict[str, Any]:
+    """Serialise a Program for the editor form. Mirrors the field
+    layout of :func:`_PROGRAM_FIELD_SCHEMA` so a round-trip
+    fetch → edit → save is straightforward.
+    """
+    return {
+        "prog_type": program.prog_type,
+        "cond": program.cond,
+        "cond2": program.cond2,
+        "cmd": program.cmd,
+        "par": program.par,
+        "pr2": program.pr2,
+        "month": program.month,
+        "day": program.day,
+        "days": program.days,
+        "hour": program.hour,
+        "minute": program.minute,
+        "remark_id": program.remark_id,
+    }
+
+
+_PROGRAM_FIELD_SCHEMA = vol.Schema(
+    {
+        vol.Required("prog_type"): vol.All(int, vol.Range(min=0, max=10)),
+        vol.Optional("cond", default=0): vol.All(int, vol.Range(min=0, max=0xFFFF)),
+        vol.Optional("cond2", default=0): vol.All(int, vol.Range(min=0, max=0xFFFF)),
+        vol.Optional("cmd", default=0): vol.All(int, vol.Range(min=0, max=0xFF)),
+        vol.Optional("par", default=0): vol.All(int, vol.Range(min=0, max=0xFF)),
+        vol.Optional("pr2", default=0): vol.All(int, vol.Range(min=0, max=0xFFFF)),
+        vol.Optional("month", default=0): vol.All(int, vol.Range(min=0, max=0xFF)),
+        vol.Optional("day", default=0): vol.All(int, vol.Range(min=0, max=0xFF)),
+        vol.Optional("days", default=0): vol.All(int, vol.Range(min=0, max=0xFF)),
+        vol.Optional("hour", default=0): vol.All(int, vol.Range(min=0, max=0xFF)),
+        vol.Optional("minute", default=0): vol.All(int, vol.Range(min=0, max=0xFF)),
+        vol.Optional("remark_id"): vol.Any(None, vol.All(int, vol.Range(min=0))),
+    },
+    extra=vol.PREVENT_EXTRA,
+)
+
+
+@websocket_api.websocket_command(
+    {
+        vol.Required("type"): "omni_pca/programs/chain/write",
+        vol.Required("entry_id"): str,
+        vol.Required("head_slot"): vol.All(int, vol.Range(min=1, max=1500)),
+        vol.Required("head"): dict,        # WHEN / AT / EVERY program dict
+        vol.Required("conditions"): [dict],
+        vol.Required("actions"): [dict],
+    }
+)
+@websocket_api.async_response
+async def _ws_chain_write(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: dict[str, Any],
+) -> None:
+    """Rewrite a clausal chain into consecutive slots.
+
+    A clausal program spans one head (WHEN/AT/EVERY) + N condition
+    records (AND/OR) + M action records (THEN), each in its own slot.
+    Editing means rewriting the whole run.
+
+    Logic:
+      1. Find the *existing* chain that owns ``head_slot`` (so we know
+         which old slots to clear when the chain shrinks).
+      2. The new run spans slots [head_slot .. head_slot + new_len - 1].
+         If new_len > old_len, the additional slots must currently be
+         FREE — refuse otherwise so we never trample an adjacent
+         program.
+      3. Write each new record via ``download_program``. The new run's
+         records are emitted in slot order; THEN actions land last.
+      4. Clear any old chain slots beyond the new run's end (shrinking
+         case) so leftover continuation records don't get mis-associated
+         with the now-shorter chain.
+    """
+    coordinator = _coordinator_for_entry(hass, msg["entry_id"])
+    if coordinator is None:
+        connection.send_error(msg["id"], "not_found", "panel not configured")
+        return
+    try:
+        client = coordinator.client
+    except RuntimeError as err:
+        connection.send_error(msg["id"], "not_connected", str(err))
+        return
+
+    from omni_pca.programs import Program  # local — avoid cycle
+
+    # Validate every member dict against the per-record schema (used
+    # individually so each member can have its own defaults).
+    try:
+        head_fields = _PROGRAM_FIELD_SCHEMA(msg["head"])
+        condition_fields = [_PROGRAM_FIELD_SCHEMA(c) for c in msg["conditions"]]
+        action_fields = [_PROGRAM_FIELD_SCHEMA(a) for a in msg["actions"]]
+    except vol.Invalid as err:
+        connection.send_error(msg["id"], "invalid", f"bad chain member: {err}")
+        return
+
+    if not action_fields:
+        connection.send_error(
+            msg["id"], "invalid", "chain must have at least one THEN action",
+        )
+        return
+
+    head_slot = msg["head_slot"]
+    new_len = 1 + len(condition_fields) + len(action_fields)
+
+    # Find the existing chain (if any) so we know which old slots are
+    # currently part of this program. Without an existing chain we still
+    # allow writing — that's the "create chain at this empty slot" case.
+    from omni_pca.program_engine import build_chains
+
+    programs = coordinator.data.programs if coordinator.data else {}
+    existing = next(
+        (c for c in build_chains(tuple(programs.values()))
+         if c.head.slot == head_slot),
+        None,
+    )
+    existing_slots: set[int] = set()
+    if existing is not None:
+        for m in (existing.head, *existing.conditions, *existing.actions):
+            if m.slot is not None:
+                existing_slots.add(m.slot)
+
+    new_slot_range = range(head_slot, head_slot + new_len)
+    if new_slot_range.stop > 1501:
+        connection.send_error(
+            msg["id"], "invalid",
+            f"chain of {new_len} records starting at slot {head_slot} "
+            f"would extend past slot 1500",
+        )
+        return
+
+    # Anti-trample check for any expansion slots that aren't already
+    # part of this chain.
+    for s in new_slot_range:
+        if s in existing_slots:
+            continue
+        if s in programs and not programs[s].is_empty():
+            connection.send_error(
+                msg["id"], "invalid",
+                f"target slot {s} is occupied by another program "
+                f"(slot {s}); free it first",
+            )
+            return
+
+    # Build the typed records.
+    head = Program(slot=head_slot, **head_fields)
+    new_records: list[tuple[int, Program]] = [(head_slot, head)]
+    for i, cf in enumerate(condition_fields):
+        slot = head_slot + 1 + i
+        new_records.append((slot, Program(slot=slot, **cf)))
+    actions_base = head_slot + 1 + len(condition_fields)
+    for i, af in enumerate(action_fields):
+        slot = actions_base + i
+        new_records.append((slot, Program(slot=slot, **af)))
+
+    # Write them in order.
+    try:
+        for slot, prog in new_records:
+            await client.download_program(slot, prog)
+    except NotImplementedError as err:
+        connection.send_error(msg["id"], "not_supported", str(err))
+        return
+    except Exception as err:
+        connection.send_error(msg["id"], "write_failed", str(err))
+        return
+
+    # Clear any old chain slot that's not in the new range (shrinking
+    # case). Order matters: clears come *after* writes so a transient
+    # observer never sees a half-rewritten chain.
+    to_clear = existing_slots - set(new_slot_range)
+    for slot in sorted(to_clear):
+        try:
+            await client.clear_program(slot)
+        except Exception:
+            # Don't fail the whole write for a clear-failure; log and continue.
+            _log.warning("failed to clear shrunk-away slot %s", slot)
+
+    # Update coordinator state. Same shape as single-slot write: drop
+    # cleared slots, set written slots.
+    if coordinator.data is not None:
+        for slot, prog in new_records:
+            coordinator.data.programs[slot] = prog
+        for slot in to_clear:
+            coordinator.data.programs.pop(slot, None)
+
+    connection.send_result(msg["id"], {
+        "head_slot": head_slot,
+        "written_slots": list(new_slot_range),
+        "cleared_slots": sorted(to_clear),
+    })
+
+
+@websocket_api.websocket_command(
+    {
+        vol.Required("type"): "omni_pca/objects/list",
+        vol.Required("entry_id"): str,
+    }
+)
+@websocket_api.async_response
+async def _ws_list_objects(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: dict[str, Any],
+) -> None:
+    """Return discovered objects so the frontend editor can populate
+    object pickers (zone / unit / area / thermostat / button).
+
+    Returns a flat dict mapping each kind to a list of
+    ``{index, name}`` entries in slot order. Cached client-side after
+    the first call — the topology doesn't change unless the user
+    reloads the integration.
+    """
+    coordinator = _coordinator_for_entry(hass, msg["entry_id"])
+    if coordinator is None:
+        connection.send_error(msg["id"], "not_found", "panel not configured")
+        return
+    data = coordinator.data
+    if data is None:
+        connection.send_result(msg["id"], {})
+        return
+
+    def _flatten(bucket) -> list[dict[str, Any]]:
+        return [
+            {"index": idx, "name": getattr(obj, "name", "") or f"slot {idx}"}
+            for idx, obj in sorted(bucket.items())
+        ]
+
+    connection.send_result(msg["id"], {
+        "zones": _flatten(data.zones),
+        "units": _flatten(data.units),
+        "areas": _flatten(data.areas),
+        "thermostats": _flatten(data.thermostats),
+        "buttons": _flatten(data.buttons),
+    })
+
+
+@websocket_api.websocket_command(
+    {
+        vol.Required("type"): "omni_pca/programs/write",
+        vol.Required("entry_id"): str,
+        vol.Required("slot"): vol.All(int, vol.Range(min=1, max=1500)),
+        vol.Required("program"): dict,
+    }
+)
+@websocket_api.async_response
+async def _ws_write_program(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: dict[str, Any],
+) -> None:
+    """Write an arbitrary Program record to ``slot``.
+
+    The ``program`` payload is a JSON-friendly dict mirroring the
+    :class:`omni_pca.programs.Program` dataclass — every field passed
+    by name. Default 0 for fields the caller omits (matches the
+    dataclass defaults). ``remark_id`` is optional / None.
+
+    Frontend's edit form posts the whole struct on save; the slot is
+    re-stamped to ``msg["slot"]`` in case the caller forgot. Saves
+    update ``coordinator.data.programs[slot]`` immediately so the
+    next list call shows the edit before the next poll catches up.
+    """
+    coordinator = _coordinator_for_entry(hass, msg["entry_id"])
+    if coordinator is None:
+        connection.send_error(msg["id"], "not_found", "panel not configured")
+        return
+    try:
+        validated = _PROGRAM_FIELD_SCHEMA(msg["program"])
+    except vol.Invalid as err:
+        connection.send_error(msg["id"], "invalid", f"bad program payload: {err}")
+        return
+    try:
+        client = coordinator.client
+    except RuntimeError as err:
+        connection.send_error(msg["id"], "not_connected", str(err))
+        return
+
+    from omni_pca.programs import Program  # local — avoid cycle
+
+    program = Program(slot=msg["slot"], **validated)
+    try:
+        await client.download_program(msg["slot"], program)
+    except NotImplementedError as err:
+        connection.send_error(msg["id"], "not_supported", str(err))
+        return
+    except Exception as err:
+        connection.send_error(msg["id"], "write_failed", str(err))
+        return
+    if coordinator.data is not None:
+        coordinator.data.programs[msg["slot"]] = program
+    connection.send_result(
+        msg["id"], {"slot": msg["slot"], "written": True},
+    )
+
+
+@websocket_api.websocket_command(
+    {
+        vol.Required("type"): "omni_pca/programs/clear",
+        vol.Required("entry_id"): str,
+        vol.Required("slot"): vol.All(int, vol.Range(min=1, max=1500)),
+    }
+)
+@websocket_api.async_response
+async def _ws_clear_program(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: dict[str, Any],
+) -> None:
+    """Erase a program slot by writing an all-zero 14-byte body.
+
+    Equivalent to "delete this program". v1 panels report
+    ``not_supported`` because their wire protocol only allows bulk
+    rewrites (which would clear everything).
+    """
+    coordinator = _coordinator_for_entry(hass, msg["entry_id"])
+    if coordinator is None:
+        connection.send_error(msg["id"], "not_found", "panel not configured")
+        return
+    try:
+        client = coordinator.client
+    except RuntimeError as err:
+        connection.send_error(msg["id"], "not_connected", str(err))
+        return
+    try:
+        await client.clear_program(msg["slot"])
+    except NotImplementedError as err:
+        connection.send_error(msg["id"], "not_supported", str(err))
+        return
+    except Exception as err:
+        connection.send_error(msg["id"], "clear_failed", str(err))
+        return
+    # Drop the entry from the coordinator's in-memory view so subsequent
+    # ``list`` calls reflect the deletion before the next poll catches up.
+    if coordinator.data is not None:
+        coordinator.data.programs.pop(msg["slot"], None)
+    connection.send_result(msg["id"], {"slot": msg["slot"], "cleared": True})
+
+
+@websocket_api.websocket_command(
+    {
+        vol.Required("type"): "omni_pca/programs/clone",
+        vol.Required("entry_id"): str,
+        vol.Required("source_slot"): vol.All(int, vol.Range(min=1, max=1500)),
+        vol.Required("target_slot"): vol.All(int, vol.Range(min=1, max=1500)),
+    }
+)
+@websocket_api.async_response
+async def _ws_clone_program(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: dict[str, Any],
+) -> None:
+    """Copy ``source_slot``'s program into ``target_slot``.
+
+    Useful for "I want a slightly different version of this program" —
+    user clones into an empty slot, then (eventually, when the editor
+    UI lands) tweaks the fields and saves.
+
+    Refuses to clone when source and target are the same slot or when
+    the source slot is empty / not defined.
+    """
+    coordinator = _coordinator_for_entry(hass, msg["entry_id"])
+    if coordinator is None:
+        connection.send_error(msg["id"], "not_found", "panel not configured")
+        return
+    src = msg["source_slot"]
+    dst = msg["target_slot"]
+    if src == dst:
+        connection.send_error(
+            msg["id"], "invalid", "source and target slots must differ",
+        )
+        return
+    programs = coordinator.data.programs if coordinator.data else {}
+    source_program = programs.get(src)
+    if source_program is None or source_program.is_empty():
+        connection.send_error(
+            msg["id"], "not_found", f"no program at source slot {src}",
+        )
+        return
+    try:
+        client = coordinator.client
+    except RuntimeError as err:
+        connection.send_error(msg["id"], "not_connected", str(err))
+        return
+    # The Program dataclass carries the slot field; re-stamp it for the
+    # destination so the on-the-wire bytes are correctly addressed.
+    from omni_pca.programs import Program  # local — avoid cycle
+    cloned = Program(
+        slot=dst,
+        prog_type=source_program.prog_type,
+        cond=source_program.cond,
+        cond2=source_program.cond2,
+        cmd=source_program.cmd,
+        par=source_program.par,
+        pr2=source_program.pr2,
+        month=source_program.month,
+        day=source_program.day,
+        days=source_program.days,
+        hour=source_program.hour,
+        minute=source_program.minute,
+        remark_id=source_program.remark_id,
+    )
+    try:
+        await client.download_program(dst, cloned)
+    except NotImplementedError as err:
+        connection.send_error(msg["id"], "not_supported", str(err))
+        return
+    except Exception as err:
+        connection.send_error(msg["id"], "clone_failed", str(err))
+        return
+    if coordinator.data is not None:
+        coordinator.data.programs[dst] = cloned
+    connection.send_result(
+        msg["id"], {"source_slot": src, "target_slot": dst, "cloned": True},
+    )
+
+
+@websocket_api.websocket_command(
+    {
+        vol.Required("type"): "omni_pca/programs/fire",
+        vol.Required("entry_id"): str,
+        vol.Required("slot"): vol.All(int, vol.Range(min=1, max=1500)),
+    }
+)
+@websocket_api.async_response
+async def _ws_fire_program(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: dict[str, Any],
+) -> None:
+    """Ask the panel to execute a program right now.
+
+    Sends ``Command(EXECUTE_PROGRAM, parameter2=slot)`` via the
+    coordinator's :class:`OmniClient`. The panel acks; any state
+    changes the program triggers come back as ordinary push events.
+    """
+    coordinator = _coordinator_for_entry(hass, msg["entry_id"])
+    if coordinator is None:
+        connection.send_error(msg["id"], "not_found", "panel not configured")
+        return
+    try:
+        client = coordinator.client
+    except RuntimeError as err:
+        connection.send_error(msg["id"], "not_connected", str(err))
+        return
+    try:
+        await client.execute_command(Command.EXECUTE_PROGRAM, parameter2=msg["slot"])
+    except Exception as err:
+        connection.send_error(msg["id"], "fire_failed", str(err))
+        return
+    connection.send_result(msg["id"], {"slot": msg["slot"], "fired": True})
+
+
+# --------------------------------------------------------------------------
+# Setup
+# --------------------------------------------------------------------------
+
+
+@callback
+def async_register_websocket_commands(hass: HomeAssistant) -> None:
+    """Idempotently register the program-viewer websocket commands.
+
+    Called from the integration's ``async_setup_entry``; safe to call
+    once per HA boot. HA's ``websocket_api.async_register_command`` is
+    itself idempotent so a stray double-call from reload paths is fine.
+    """
+    websocket_api.async_register_command(hass, _ws_list_programs)
+    websocket_api.async_register_command(hass, _ws_get_program)
+    websocket_api.async_register_command(hass, _ws_fire_program)
+    websocket_api.async_register_command(hass, _ws_clear_program)
+    websocket_api.async_register_command(hass, _ws_clone_program)
+    websocket_api.async_register_command(hass, _ws_write_program)
+    websocket_api.async_register_command(hass, _ws_chain_write)
+    websocket_api.async_register_command(hass, _ws_list_objects)
+
+
+# --------------------------------------------------------------------------
+# Side-panel registration
+# --------------------------------------------------------------------------
+
+
+# Where the integration serves the bundled panel JS from. Phase C builds
+# the actual ESM bundle and drops it at ``custom_components/omni_pca/
+# www/panel.js`` — we register a static path so HA serves it at
+# ``/api/omni_pca/panel.js``.
+_PANEL_FRONTEND_URL: str = "omni-panel-programs"
+_PANEL_WEBCOMPONENT: str = "omni-panel-programs"
+_PANEL_JS_PATH: str = "/api/omni_pca/panel.js"
+
+
+async def async_register_side_panel(hass: HomeAssistant) -> None:
+    """Register the sidebar entry that hosts the program viewer.
+
+    The bundled panel JS is served from the integration's ``www/``
+    directory via a registered static path. Until Phase C ships the
+    bundle, the panel registration still appears (HA shows a generic
+    loader) so the wiring can be exercised end-to-end.
+    """
+    from pathlib import Path
+
+    from homeassistant.components.frontend import (
+        async_remove_panel,
+    )
+    from homeassistant.components.panel_custom import async_register_panel
+
+    # Serve <integration>/www/panel.js at /api/omni_pca/panel.js.
+    www_dir = Path(__file__).parent / "www"
+    www_dir.mkdir(exist_ok=True)
+    panel_js = www_dir / "panel.js"
+    if not panel_js.exists():
+        # Stub so the static path resolves even before Phase C builds the
+        # real bundle. The stub renders a "panel coming soon" message so
+        # users on dev installs see something useful rather than 404.
+        panel_js.write_text(_STUB_PANEL_JS)
+    await hass.http.async_register_static_paths(
+        [_StaticPathConfig(_PANEL_JS_PATH, str(panel_js), False)]
+    )
+
+    # async_remove_panel before re-register so reload doesn't duplicate.
+    try:
+        async_remove_panel(hass, _PANEL_FRONTEND_URL)
+    except Exception:
+        pass
+    await async_register_panel(
+        hass,
+        frontend_url_path=_PANEL_FRONTEND_URL,
+        webcomponent_name=_PANEL_WEBCOMPONENT,
+        sidebar_title="Omni Programs",
+        sidebar_icon="mdi:script-text-outline",
+        module_url=_PANEL_JS_PATH,
+        embed_iframe=False,
+        require_admin=False,
+    )
+
+
+_STUB_PANEL_JS: str = """\
+// omni-pca side panel — stub until Phase C frontend lands.
+class OmniPanelPrograms extends HTMLElement {
+  set hass(hass) {
+    if (!this._rendered) {
+      this.innerHTML = `
+        <style>
+          :host, .root { display: block; padding: 24px; font-family: sans-serif; }
+          h1 { font-size: 1.25rem; margin: 0 0 8px; }
+          p  { color: #666; margin: 0; }
+        </style>
+        <div class="root">
+          <h1>Omni Programs</h1>
+          <p>Frontend bundle not yet installed.
+             Phase C of the program viewer will populate this panel.</p>
+        </div>`;
+      this._rendered = true;
+    }
+  }
+}
+customElements.define('omni-panel-programs', OmniPanelPrograms);
+"""
+
+
+# Late import: HA's StaticPathConfig moved in 2024.7. The integration is
+# pinned to a current HA release so this import works, but importing at
+# module top would force the dep on tests that don't need the panel.
+from homeassistant.components.http import StaticPathConfig as _StaticPathConfig  # noqa: E402

dev/README.md

@@ -44,6 +44,75 @@ make dev-down       # stop the stack
 make dev-reset      # wipe HA config and start fresh
 ```
 
+## Load real `.pca` data into the mock
+
+By default the mock serves a small synthetic state (five zones, four
+units, …). Point `OMNI_PCA_FIXTURE` at a real `.pca` file to make the
+mock indistinguishable on the wire from the source panel:
+
+```bash
+# dev/.env (gitignored)
+OMNI_PCA_FIXTURE=/fixtures/path/to/Account.pca
+```
+
+The host directory `/home/kdm/home-auto/HAI` is mounted at `/fixtures`
+inside the mock-panel container (see `docker-compose.yml`); adjust the
+mount if your `.pca` lives elsewhere.
+
+The decryption key is auto-derived from a sibling `PCA01.CFG` if one
+exists (this is how PC Access exports usually ship). To override:
+
+```bash
+OMNI_PCA_FIXTURE_KEY=0xC1A280B2   # or --pca-key on the command line
+```
+
+`MockState.from_pca` populates zones, units, areas, thermostats,
+buttons, programs, model byte, and firmware version from the file —
+everything the HA integration reads at discovery time.
+
+## Time-series & dashboards
+
+`docker compose up -d` also brings up **InfluxDB v2** (port 8086) and
+**Grafana** (port 3000). Open Grafana at <http://localhost:3000>
+(login: `admin` / `$GRAFANA_PASSWORD` from `.env`) — the **Omni Pro II
+— Panel Overview** dashboard loads automatically, pre-provisioned from
+[`../grafana/`](../grafana/), the shipping bundle.
+
+To wire HA → InfluxDB, append this block to `ha-config/configuration.yaml`
+(the directory is gitignored because it contains HA auth/state; the
+block lives in `../grafana/ha-snippet.yaml` for production users):
+
+```yaml
+influxdb:
+  api_version: 2
+  host: influxdb
+  port: 8086
+  ssl: false
+  verify_ssl: false
+  token: dev-token-omnipca-9472-fixed-for-dev-stack
+  organization: omni-pca
+  bucket: ha
+  precision: s
+  tags_attributes: [event_type, event_class]
+  include:
+    domains: [alarm_control_panel, binary_sensor, climate, event, light, sensor, switch]
+    entity_globs: ["*omni*"]
+```
+
+Restart HA (`docker compose restart homeassistant`) after editing.
+Within 30 seconds, panels start populating with live data.
+
+The dashboard JSON in `../grafana/provisioning/dashboards/` is the
+source of truth; edits in the Grafana UI don't persist (provisioned
+dashboards are read-only). Iterate by editing the JSON and running
+`docker compose restart grafana` — the provisioner picks up changes
+within ~30s.
+
+To exercise dashboard panels against the mock, trigger HA actions
+(arm an area, toggle a light): the mock pushes the resulting
+`SystemEvent` back to HA, which ships it to InfluxDB, which Grafana
+queries. Each step takes <1s.
+
 ## Notes
 
 - The HA container mounts `../custom_components/omni_pca/` read-only, so

dev/add_real_panel.py

@@ -0,0 +1,150 @@
+#!/usr/bin/env python3
+"""Add a *second* omni_pca config entry pointing at the real panel.
+
+The dev stack already has one entry pointing at the mock panel
+(``host.docker.internal:14369``). This script adds another entry for
+the real panel at ``192.168.1.9:4369`` using ``transport=udp`` and the
+controller key from the bundled .pca fixture.
+
+Run inside the project venv:
+    cd /home/kdm/home-auto/omni-pca
+    uv run python dev/add_real_panel.py
+"""
+
+from __future__ import annotations
+
+import argparse
+import asyncio
+import sys
+from pathlib import Path
+
+import httpx
+
+sys.path.insert(0, str(Path(__file__).parent))
+from probe_v1 import _load_key  # type: ignore  # noqa: E402
+
+DEFAULT_HA_URL = "http://localhost:8123"
+PANEL_HOST = "192.168.1.9"
+PANEL_PORT = 4369
+
+
+DEFAULT_USERNAME = "demo"
+DEFAULT_PASSWORD = "demo-password-1234"
+
+
+async def _get_token(ha_url: str) -> str:
+    """Re-use the cached access token; otherwise log in via /auth/login_flow."""
+    token_file = (
+        Path(__file__).parent / "ha-config" / ".storage" / ".demo_access_token"
+    )
+    if token_file.exists():
+        return token_file.read_text().strip()
+    async with httpx.AsyncClient(base_url=ha_url, timeout=15.0) as client:
+        r = await client.post(
+            "/auth/login_flow",
+            json={
+                "client_id": ha_url,
+                "handler": ["homeassistant", None],
+                "redirect_uri": ha_url,
+            },
+        )
+        r.raise_for_status()
+        flow_id = r.json()["flow_id"]
+        r = await client.post(
+            f"/auth/login_flow/{flow_id}",
+            json={
+                "client_id": ha_url,
+                "username": DEFAULT_USERNAME,
+                "password": DEFAULT_PASSWORD,
+            },
+        )
+        r.raise_for_status()
+        auth_code = r.json()["result"]
+        r = await client.post(
+            "/auth/token",
+            data={
+                "client_id": ha_url,
+                "grant_type": "authorization_code",
+                "code": auth_code,
+            },
+        )
+        r.raise_for_status()
+        token = r.json()["access_token"]
+        # Cache for next run.
+        try:
+            token_file.write_text(token)
+        except Exception:
+            pass
+        return token
+
+
+async def amain(args: argparse.Namespace) -> int:
+    key_bytes = _load_key(None)
+    key_hex = key_bytes.hex()
+    print(f"[add-real-panel] target HA: {args.ha_url}")
+    print(f"[add-real-panel] panel:     {PANEL_HOST}:{PANEL_PORT} (UDP)")
+    print(f"[add-real-panel] key:       ...{key_hex[-4:]} (16 bytes)\n")
+
+    token = await _get_token(args.ha_url)
+    headers = {"Authorization": f"Bearer {token}"}
+
+    async with httpx.AsyncClient(base_url=args.ha_url, timeout=30.0) as client:
+        # ---- check if an entry already exists for this host ----
+        r = await client.get(
+            "/api/config/config_entries/entry", headers=headers
+        )
+        r.raise_for_status()
+        for entry in r.json():
+            if entry.get("domain") != "omni_pca":
+                continue
+            data = entry.get("data", {})
+            if data.get("host") == PANEL_HOST and data.get("port") == PANEL_PORT:
+                print(f"  already configured: {entry['title']} ({entry['entry_id']})")
+                return 0
+
+        # ---- start the config flow ----
+        r = await client.post(
+            "/api/config/config_entries/flow",
+            headers=headers,
+            json={"handler": "omni_pca", "show_advanced_options": False},
+        )
+        r.raise_for_status()
+        flow = r.json()
+        flow_id = flow["flow_id"]
+        print(f"  flow opened: {flow_id} (step={flow.get('step_id')})")
+
+        # ---- submit the form for the real panel ----
+        r = await client.post(
+            f"/api/config/config_entries/flow/{flow_id}",
+            headers=headers,
+            json={
+                "host": PANEL_HOST,
+                "port": PANEL_PORT,
+                "controller_key": key_hex,
+                "transport": "udp",
+            },
+            timeout=60.0,  # the probe round-trip can take a few seconds
+        )
+        r.raise_for_status()
+        result = r.json()
+        if result.get("type") == "create_entry":
+            print(f"  ✓ entry created: {result.get('title')}")
+            print(f"    entry_id:      {result.get('result')}")
+        elif result.get("type") == "form":
+            print(f"  form re-shown — errors: {result.get('errors')}")
+            return 1
+        else:
+            print(f"  unexpected outcome: {result}")
+            return 1
+    return 0
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--ha-url", default=DEFAULT_HA_URL)
+    args = parser.parse_args()
+    return asyncio.run(amain(args))
+
+
+if __name__ == "__main__":
+    sys.exit(main())

dev/docker-compose.yml

@@ -6,15 +6,27 @@
 #   make dev-logs    # tail HA logs
 #   make dev-down    # stop and clean
 #
+# On every container start the HA service pip-installs the local
+# `omni-pca` library from ../ into site-packages (the version pinned in
+# the integration manifest isn't on PyPI yet, and we want our latest
+# v1/ subpackage available either way). Source changes in src/omni_pca
+# require a ``docker compose restart homeassistant`` to take effect.
+#
 # Once running, open http://localhost:8123 and:
 #   1. Onboard with any name / location.
 #   2. Settings -> Devices & Services -> Add Integration ->
 #      "HAI/Leviton Omni Panel".
-#   3. Use:
+#   3. Use one of:
+#        Mock panel (TCP):
 #          host             host.docker.internal
 #          port             14369
+#          transport        TCP
 #          controller_key   000102030405060708090a0b0c0d0e0f
-#      (matches scripts/run_mock_panel.py defaults)
+#        Real panel (UDP, v1 wire protocol):
+#          host             <panel IP, e.g. 192.168.1.9>
+#          port             4369
+#          transport        UDP
+#          controller_key   <32 hex chars from the panel's .pca file>
 
 services:
   mock-panel:
@@ -23,14 +35,22 @@ services:
     volumes:
       - ../src:/tmp/mock/src:ro
       - ./run_mock_panel.py:/tmp/mock/run_mock_panel.py:ro
+      # Mount the captured .pca fixtures read-only so the mock can
+      # optionally seed its state from a real export. Set
+      # OMNI_PCA_FIXTURE in dev/.env (or pass on the command line) to
+      # activate; left unset, the mock uses the hard-coded sample.
+      - /home/kdm/home-auto/HAI:/fixtures:ro
     environment:
       PYTHONPATH: /tmp/mock/src
+      OMNI_PCA_FIXTURE: ${OMNI_PCA_FIXTURE:-}
     command:
       - sh
       - -c
       - "uv pip install --system --quiet cryptography && python /tmp/mock/run_mock_panel.py --host 0.0.0.0 --port 14369"
     ports:
       - "14369:14369"
+    networks:
+      - default
 
   homeassistant:
     image: ghcr.io/home-assistant/home-assistant:2026.5
@@ -40,9 +60,116 @@ services:
     volumes:
       - ./ha-config:/config
       - ../custom_components/omni_pca:/config/custom_components/omni_pca:ro
+      # Make the whole library project (pyproject + src/ + dist/) available
+      # so the entrypoint override below can pip-install from local source
+      # before /init starts. This gives HA real dist-info for
+      # ``omni-pca==2026.5.10`` (which isn't on PyPI yet) and ensures the
+      # v1 subpackage is present.
+      - ../:/opt/omni-pca-src:ro
+    # Keep 8123 mapped on localhost for direct access during development;
+    # public traffic comes in via caddy-docker-proxy on the `caddy` net.
     ports:
       - "8123:8123"
     extra_hosts:
       - "host.docker.internal:host-gateway"
     environment:
       - TZ=America/Boise
+    networks:
+      - default
+      - caddy
+    labels:
+      caddy: juliet.warehack.ing
+      caddy.reverse_proxy: "{{upstreams 8123}}"
+      # HA uses WebSockets for the frontend (lovelace state updates,
+      # config flow, etc.) so we need the streaming-friendly settings
+      # from CLAUDE.md, otherwise caddy closes the socket every ~15s.
+      caddy.reverse_proxy.flush_interval: "-1"
+      caddy.reverse_proxy.transport: http
+      caddy.reverse_proxy.transport.read_timeout: "0"
+      caddy.reverse_proxy.transport.write_timeout: "0"
+      caddy.reverse_proxy.transport.keepalive: 5m
+      caddy.reverse_proxy.transport.keepalive_idle_conns: "10"
+      caddy.reverse_proxy.stream_timeout: 24h
+      caddy.reverse_proxy.stream_close_delay: 5s
+    # HA's image entrypoint is /init (s6-overlay). We pre-install our
+    # local library against site-packages so HA's manifest-requirement
+    # check finds it, then exec /init normally.
+    entrypoint:
+      - sh
+      - -c
+      - |
+        set -e
+        pip install --quiet --no-deps --upgrade /opt/omni-pca-src
+        exec /init
+
+  # InfluxDB v2 + Grafana stack — kept inline rather than `extends:`-ing
+  # ../grafana/docker-compose.yml so this file stays self-contained and
+  # the named volumes get scoped to this compose project. The bundle
+  # compose stays the canonical ship-to-users version; we share its
+  # provisioning files via the volume mount on the grafana service.
+  influxdb:
+    image: influxdb:2.7-alpine
+    container_name: omni-pca-dev-influxdb
+    restart: unless-stopped
+    environment:
+      DOCKER_INFLUXDB_INIT_MODE: setup
+      DOCKER_INFLUXDB_INIT_USERNAME: ${INFLUX_USERNAME:-admin}
+      DOCKER_INFLUXDB_INIT_PASSWORD: ${INFLUX_PASSWORD}
+      DOCKER_INFLUXDB_INIT_ORG: omni-pca
+      DOCKER_INFLUXDB_INIT_BUCKET: ha
+      DOCKER_INFLUXDB_INIT_ADMIN_TOKEN: ${INFLUX_TOKEN}
+      DOCKER_INFLUXDB_INIT_RETENTION: 30d
+    volumes:
+      - influxdb-data:/var/lib/influxdb2
+      - influxdb-config:/etc/influxdb2
+    ports:
+      - "8086:8086"
+    networks:
+      - default
+    healthcheck:
+      test: ["CMD", "wget", "-qO-", "http://127.0.0.1:8086/health"]
+      interval: 10s
+      timeout: 3s
+      retries: 5
+      start_period: 10s
+
+  grafana:
+    image: grafana/grafana:11.4.0
+    container_name: omni-pca-dev-grafana
+    restart: unless-stopped
+    depends_on:
+      influxdb:
+        condition: service_healthy
+    environment:
+      GF_SECURITY_ADMIN_PASSWORD: ${GRAFANA_PASSWORD}
+      GF_AUTH_ANONYMOUS_ENABLED: "false"
+      GF_USERS_ALLOW_SIGN_UP: "false"
+      GF_LOG_LEVEL: warn
+      INFLUX_URL: http://influxdb:8086
+      INFLUX_TOKEN: ${INFLUX_TOKEN}
+    volumes:
+      - grafana-data:/var/lib/grafana
+      - ../grafana/provisioning:/etc/grafana/provisioning:ro
+    ports:
+      - "3000:3000"
+    networks:
+      - default
+      - caddy
+    labels:
+      caddy: grafana-omni.juliet.warehack.ing
+      caddy.reverse_proxy: "{{upstreams 3000}}"
+    healthcheck:
+      test: ["CMD-SHELL", "wget -qO- http://127.0.0.1:3000/api/health || exit 1"]
+      interval: 10s
+      timeout: 3s
+      retries: 5
+      start_period: 15s
+
+volumes:
+  influxdb-data:
+  influxdb-config:
+  grafana-data:
+
+networks:
+  caddy:
+    external: true

dev/probe_v1.py

@@ -0,0 +1,151 @@
+#!/usr/bin/env python3
+"""Phase-1 smoke test: v1-over-UDP handshake + RequestSystemInformation.
+
+Run inside the project venv:
+    cd /home/kdm/home-auto/omni-pca
+    uv run python dev/probe_v1.py [--host 192.168.1.9] [--port 4369]
+
+Requires the panel's controller key. Picks it up from (in order):
+  1. ``--key 32hex`` on the command line
+  2. ``OMNI_KEY`` env var
+  3. ``dev/.omni_key`` file (gitignored)
+  4. The bundled ``.pca`` plain fixture (developer-only fallback)
+
+Success criteria: panel returns a v1 SystemInformation message (opcode 18)
+within the timeout. Failure modes we want to distinguish:
+  * UDP socket fails to open  → routing / firewall
+  * Handshake step 2 timeout → wrong port, wrong panel
+  * Handshake step 4 termination → wrong controller key
+  * SystemInformation timeout → v1 path isn't doing what we think
+  * SystemInformation reply  → v1-over-UDP is real, proceed to Phase 2
+"""
+
+from __future__ import annotations
+
+import argparse
+import asyncio
+import logging
+import os
+import sys
+from pathlib import Path
+
+from omni_pca.v1.connection import (
+    HandshakeError,
+    InvalidEncryptionKeyError,
+    OmniConnectionV1,
+    RequestTimeoutError,
+)
+from omni_pca.opcodes import OmniLinkMessageType
+
+
+def _load_key(arg_key: str | None) -> bytes:
+    if arg_key:
+        return bytes.fromhex(arg_key)
+    env = os.environ.get("OMNI_KEY")
+    if env:
+        return bytes.fromhex(env)
+    keyfile = Path(__file__).parent / ".omni_key"
+    if keyfile.exists():
+        return bytes.fromhex(keyfile.read_text().strip())
+    fixture = Path("/home/kdm/home-auto/HAI/pca-re/extracted/Our_House.pca.plain")
+    if fixture.exists():
+        from omni_pca.pca_file import (
+            PcaReader,
+            _CAP_OMNI_PRO_II,
+            _parse_header,
+            _walk_to_connection,
+        )
+
+        r = PcaReader(fixture.read_bytes())
+        _parse_header(r)
+        _walk_to_connection(r, _CAP_OMNI_PRO_II)
+        r.string8_fixed(120)  # network_address
+        r.string8_fixed(5)    # port
+        return bytes.fromhex(r.string8_fixed(32).ljust(32, "0")[:32])
+    raise SystemExit("no controller key: pass --key, set OMNI_KEY, or create dev/.omni_key")
+
+
+def _decode_system_information(payload: bytes) -> dict[str, object]:
+    """Parse the v1 SystemInformation payload (mirrors clsOLMsgSystemInformation)."""
+    if len(payload) < 29:
+        raise ValueError(f"SystemInformation payload too short: {len(payload)} bytes")
+    return {
+        "opcode": payload[0],
+        "model": payload[1],
+        "fw_major": payload[2],
+        "fw_minor": payload[3],
+        "fw_revision": int.from_bytes(payload[4:5], "big", signed=True),
+        "local_phone": payload[5:29].rstrip(b"\x00").decode("ascii", errors="replace"),
+    }
+
+
+async def amain(args: argparse.Namespace) -> int:
+    key = _load_key(args.key)
+    print(f"[probe] target {args.host}:{args.port}  key=...{key[-2:].hex()} (16 B)")
+
+    try:
+        async with OmniConnectionV1(
+            host=args.host,
+            port=args.port,
+            controller_key=key,
+            timeout=args.timeout,
+            retry_count=args.retries,
+        ) as conn:
+            print(f"[probe] handshake OK  state={conn.state.name}  "
+                  f"session_key=...{conn.session_key[-2:].hex() if conn.session_key else 'n/a'}")
+
+            print("[probe] sending v1 RequestSystemInformation (opcode 17)")
+            reply = await conn.request(OmniLinkMessageType.RequestSystemInformation)
+            print(f"[probe] reply: start_char={reply.start_char:#04x}  "
+                  f"opcode={reply.opcode}  payload={reply.data.hex()}")
+
+            if reply.opcode != int(OmniLinkMessageType.SystemInformation):
+                print(f"[probe] WARNING: expected opcode 18 (SystemInformation), "
+                      f"got {reply.opcode}")
+                return 2
+
+            info = _decode_system_information(reply.data)
+            print(f"[probe] ✓ v1-over-UDP works")
+            print(f"        model      = {info['model']}")
+            print(f"        firmware   = {info['fw_major']}.{info['fw_minor']}.{info['fw_revision']}")
+            print(f"        phone      = {info['local_phone']!r}")
+
+    except InvalidEncryptionKeyError as exc:
+        print(f"[probe] handshake terminated: wrong controller key? ({exc})")
+        return 1
+    except HandshakeError as exc:
+        print(f"[probe] handshake failed: {exc}")
+        return 1
+    except RequestTimeoutError as exc:
+        print(f"[probe] no reply to RequestSystemInformation: {exc}")
+        print("        → handshake worked but v1 path isn't responding. "
+              "Check tcpdump for what's on the wire.")
+        return 2
+    except OSError as exc:
+        print(f"[probe] socket error: {exc}")
+        return 1
+
+    return 0
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--host", default="192.168.1.9")
+    parser.add_argument("--port", type=int, default=4369)
+    parser.add_argument("--key", help="32 hex chars; overrides env/.omni_key")
+    parser.add_argument("--timeout", type=float, default=5.0)
+    parser.add_argument("--retries", type=int, default=2)
+    parser.add_argument("--debug", action="store_true",
+                        help="enable DEBUG logging (TX/RX packet dump)")
+    args = parser.parse_args()
+
+    logging.basicConfig(
+        level=logging.DEBUG if args.debug else logging.INFO,
+        format="%(asctime)s %(levelname)s %(name)s: %(message)s",
+    )
+
+    return asyncio.run(amain(args))
+
+
+if __name__ == "__main__":
+    sys.exit(main())

dev/probe_v1_client.py

@@ -0,0 +1,122 @@
+#!/usr/bin/env python3
+"""Phase-2a smoke test: drive OmniClientV1 against the real panel.
+
+Hits the read-only methods we care about for HA polling. Compares parsed
+values against the recon dump so we catch off-by-one byte errors fast.
+
+Run:
+    cd /home/kdm/home-auto/omni-pca
+    uv run python dev/probe_v1_client.py
+"""
+
+from __future__ import annotations
+
+import argparse
+import asyncio
+import logging
+import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).parent))
+from probe_v1 import _load_key  # type: ignore  # noqa: E402
+
+from omni_pca.v1 import OmniClientV1, OmniNakError
+
+
+async def amain(args: argparse.Namespace) -> int:
+    key = _load_key(args.key)
+    print(f"[client probe] target {args.host}:{args.port}\n")
+
+    async with OmniClientV1(
+        host=args.host, port=args.port, controller_key=key, timeout=4.0,
+    ) as c:
+        info = await c.get_system_information()
+        print(f"system: model={info.model_name}  fw={info.firmware_version}  "
+              f"phone={info.local_phone!r}")
+
+        print("\n--- discovery (streaming UploadNames) ---")
+        all_names = await c.list_all_names()
+        for type_byte in sorted(all_names):
+            try:
+                from omni_pca.v1 import NameType
+                label = NameType(type_byte).name
+            except ValueError:
+                label = f"type{type_byte}"
+            print(f"  {label} ({len(all_names[type_byte])} entries)")
+            for num in sorted(all_names[type_byte]):
+                print(f"    #{num}: {all_names[type_byte][num]!r}")
+
+        try:
+            sysstatus = await c.get_system_status()
+            print(f"status: time={sysstatus.panel_time}  "
+                  f"battery=0x{sysstatus.battery_reading:02x}  "
+                  f"sunrise={sysstatus.sunrise_hour:02d}:{sysstatus.sunrise_minute:02d}  "
+                  f"sunset={sysstatus.sunset_hour:02d}:{sysstatus.sunset_minute:02d}  "
+                  f"area_modes={[m for m, _ in sysstatus.area_alarms]}")
+        except Exception as exc:
+            print(f"system status failed: {type(exc).__name__}: {exc}")
+
+        print("\n--- zones 1..16 ---")
+        zones = await c.get_zone_status(1, 16)
+        for idx in sorted(zones):
+            z = zones[idx]
+            flags = []
+            if z.is_open: flags.append("open")
+            if z.is_in_alarm: flags.append("alarm")
+            if z.is_bypassed: flags.append("bypass")
+            if z.is_trouble: flags.append("trouble")
+            tag = ",".join(flags) or "secure"
+            print(f"  zone {idx:2d}: status=0x{z.raw_status:02x} loop=0x{z.loop:02x} ({tag})")
+
+        print("\n--- units 1..16 ---")
+        units = await c.get_unit_status(1, 16)
+        for idx in sorted(units):
+            u = units[idx]
+            br = u.brightness
+            br_s = f"{br}%" if br is not None else "n/a"
+            print(f"  unit {idx:2d}: state=0x{u.state:02x} ({br_s}) "
+                  f"time_remaining={u.time_remaining_secs}s")
+
+        print("\n--- thermostats 1..4 ---")
+        try:
+            tstats = await c.get_thermostat_status(1, 4)
+            for idx in sorted(tstats):
+                t = tstats[idx]
+                print(f"  tstat {idx}: status=0x{t.status:02x} "
+                      f"temp_F={t.temperature_f:.1f}  "
+                      f"heat={t.heat_setpoint_f:.0f}  cool={t.cool_setpoint_f:.0f}  "
+                      f"mode=0x{t.system_mode:02x} fan=0x{t.fan_mode:02x} "
+                      f"hold=0x{t.hold_mode:02x}")
+        except OmniNakError as exc:
+            print(f"  no thermostats configured: {exc}")
+
+        print("\n--- aux 1..8 ---")
+        try:
+            auxes = await c.get_aux_status(1, 8)
+            for idx in sorted(auxes):
+                a = auxes[idx]
+                print(f"  aux {idx}: output=0x{a.output:02x} value=0x{a.value_raw:02x} "
+                      f"low=0x{a.low_raw:02x} high=0x{a.high_raw:02x}")
+        except OmniNakError as exc:
+            print(f"  no aux sensors: {exc}")
+
+    print("\n[client probe] ✓ disconnected cleanly")
+    return 0
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--host", default="192.168.1.9")
+    parser.add_argument("--port", type=int, default=4369)
+    parser.add_argument("--key", help="32 hex chars; overrides env/.omni_key")
+    parser.add_argument("--debug", action="store_true")
+    args = parser.parse_args()
+    logging.basicConfig(
+        level=logging.DEBUG if args.debug else logging.WARNING,
+        format="%(asctime)s %(levelname)s %(name)s: %(message)s",
+    )
+    return asyncio.run(amain(args))
+
+
+if __name__ == "__main__":
+    sys.exit(main())

dev/probe_v1_coordinator.py

@@ -0,0 +1,129 @@
+#!/usr/bin/env python3
+"""Phase-3 smoke test: drive OmniClientV1Adapter through the same
+sequence the HA coordinator runs in async_config_entry_first_refresh.
+
+Doesn't pull in HA; just executes the discovery + initial poll pattern
+against the real panel and prints what an OmniData snapshot would look
+like. If this works, the actual HA coordinator should work too.
+
+Run:
+    cd /home/kdm/home-auto/omni-pca
+    uv run python dev/probe_v1_coordinator.py
+"""
+
+from __future__ import annotations
+
+import argparse
+import asyncio
+import logging
+import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).parent))
+from probe_v1 import _load_key  # type: ignore  # noqa: E402
+
+from omni_pca.models import ObjectType
+from omni_pca.v1 import OmniClientV1Adapter
+
+
+async def amain(args: argparse.Namespace) -> int:
+    key = _load_key(args.key)
+    print(f"[coord probe] target {args.host}:{args.port}\n")
+
+    async with OmniClientV1Adapter(
+        host=args.host, port=args.port, controller_key=key, timeout=10.0
+    ) as c:
+        # ---- 1. SystemInformation ----
+        info = await c.get_system_information()
+        print(f"=== SystemInformation ===\n"
+              f"  model={info.model_name}  fw={info.firmware_version}\n")
+
+        # ---- 2. Discovery: per-type names + synthesized properties ----
+        print("=== Discovery (UploadNames stream + synth Properties) ===")
+        zone_names = await c.list_zone_names()
+        unit_names = await c.list_unit_names()
+        area_names = await c.list_area_names()
+        tstat_names = await c.list_thermostat_names()
+        button_names = await c.list_button_names()
+        print(f"  zones:        {len(zone_names)}")
+        print(f"  units:        {len(unit_names)}")
+        print(f"  areas:        {len(area_names)} (fallback if 0 streamed)")
+        print(f"  thermostats:  {len(tstat_names)}")
+        print(f"  buttons:      {len(button_names)}")
+        print()
+
+        # Sanity-check that get_object_properties returns a real dataclass
+        # for one zone, one unit, one area, one thermostat, one button.
+        for type_byte, name_dict, label in [
+            (ObjectType.ZONE, zone_names, "Zone"),
+            (ObjectType.UNIT, unit_names, "Unit"),
+            (ObjectType.AREA, area_names, "Area"),
+            (ObjectType.THERMOSTAT, tstat_names, "Thermostat"),
+            (ObjectType.BUTTON, button_names, "Button"),
+        ]:
+            if not name_dict:
+                print(f"  {label}: no entries, skipping property synth")
+                continue
+            idx = min(name_dict)
+            props = await c.get_object_properties(type_byte, idx)
+            print(f"  {label} #{idx}: {props}")
+        print()
+
+        # ---- 3. Polling: bulk status for each type, plus area derivation ----
+        print("=== Polling (bulk status) ===")
+        if zone_names:
+            zone_end = max(zone_names)
+            zones = await c.get_extended_status(ObjectType.ZONE, 1, zone_end)
+            open_zones = [z for z in zones if getattr(z, "is_open", False)]
+            print(f"  ZoneStatus[1..{zone_end}]: {len(zones)} records, "
+                  f"{len(open_zones)} currently open")
+        if unit_names:
+            unit_end = max(unit_names)
+            units = await c.get_extended_status(ObjectType.UNIT, 1, unit_end)
+            on_units = [u for u in units if getattr(u, "is_on", False)]
+            print(f"  UnitStatus[1..{unit_end}]: {len(units)} records, "
+                  f"{len(on_units)} currently on")
+        if tstat_names:
+            tstat_end = max(tstat_names)
+            tstats = await c.get_extended_status(
+                ObjectType.THERMOSTAT, 1, tstat_end
+            )
+            print(f"  ThermostatStatus[1..{tstat_end}]: {len(tstats)} records")
+
+        # Areas: derived from SystemStatus
+        if area_names:
+            area_end = max(area_names)
+            areas = await c.get_object_status(ObjectType.AREA, 1, area_end)
+            modes = [a.mode for a in areas]
+            print(f"  AreaStatus[1..{area_end}]: {len(areas)} records, "
+                  f"modes={modes}")
+        print()
+
+        # ---- 4. SystemStatus ----
+        status = await c.get_system_status()
+        print(f"=== SystemStatus ===\n"
+              f"  panel_time={status.panel_time}  "
+              f"battery=0x{status.battery_reading:02x}\n"
+              f"  sunrise={status.sunrise_hour:02d}:{status.sunrise_minute:02d}  "
+              f"sunset={status.sunset_hour:02d}:{status.sunset_minute:02d}\n")
+
+    print("[coord probe] ✓ full discovery + poll cycle worked over v1+UDP")
+    return 0
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--host", default="192.168.1.9")
+    parser.add_argument("--port", type=int, default=4369)
+    parser.add_argument("--key", help="32 hex chars; overrides env/.omni_key")
+    parser.add_argument("--debug", action="store_true")
+    args = parser.parse_args()
+    logging.basicConfig(
+        level=logging.DEBUG if args.debug else logging.WARNING,
+        format="%(asctime)s %(levelname)s %(name)s: %(message)s",
+    )
+    return asyncio.run(amain(args))
+
+
+if __name__ == "__main__":
+    sys.exit(main())

dev/probe_v1_recon.py

@@ -0,0 +1,149 @@
+#!/usr/bin/env python3
+"""Phase-2 reconnaissance: fetch v1 status replies from the real panel.
+
+Doesn't parse — just dumps the raw payload bytes for each known v1 opcode
+so we can match them against the C# message classes before writing
+parsers. Builds the picture of what your panel actually has configured.
+
+Run:
+    cd /home/kdm/home-auto/omni-pca
+    uv run python dev/probe_v1_recon.py [--debug]
+"""
+
+from __future__ import annotations
+
+import argparse
+import asyncio
+import logging
+import sys
+from pathlib import Path
+
+# Reuse the key loader from probe_v1.
+sys.path.insert(0, str(Path(__file__).parent))
+from probe_v1 import _load_key  # type: ignore  # noqa: E402
+
+from omni_pca.opcodes import OmniLinkMessageType
+from omni_pca.v1.connection import OmniConnectionV1, RequestTimeoutError
+
+
+async def _request_or_warn(
+    conn: OmniConnectionV1,
+    label: str,
+    opcode: OmniLinkMessageType,
+    payload: bytes = b"",
+    expected_opcode: int | None = None,
+) -> None:
+    print(f"--- {label} (req opcode {int(opcode)}, payload {payload.hex() or '<empty>'}) ---")
+    try:
+        reply = await conn.request(opcode, payload, timeout=4.0)
+    except RequestTimeoutError as exc:
+        print(f"    TIMEOUT: {exc}")
+        return
+    except Exception as exc:
+        print(f"    ERROR:   {type(exc).__name__}: {exc}")
+        return
+    print(f"    reply opcode = {reply.opcode}")
+    print(f"    payload ({len(reply.payload)} B) = {reply.payload.hex()}")
+    if expected_opcode is not None and reply.opcode != expected_opcode:
+        print(f"    NOTE: expected opcode {expected_opcode}, got {reply.opcode}")
+
+
+async def amain(args: argparse.Namespace) -> int:
+    key = _load_key(args.key)
+    print(f"[recon] target {args.host}:{args.port}\n")
+
+    async with OmniConnectionV1(
+        host=args.host,
+        port=args.port,
+        controller_key=key,
+        timeout=4.0,
+        retry_count=1,
+    ) as conn:
+        print(f"handshake OK  state={conn.state.name}\n")
+
+        # --- panel-wide ---
+        await _request_or_warn(
+            conn, "SystemInformation", OmniLinkMessageType.RequestSystemInformation,
+            expected_opcode=int(OmniLinkMessageType.SystemInformation),
+        )
+        await _request_or_warn(
+            conn, "SystemStatus", OmniLinkMessageType.RequestSystemStatus,
+            expected_opcode=int(OmniLinkMessageType.SystemStatus),
+        )
+        await _request_or_warn(
+            conn, "StatusSummary", OmniLinkMessageType.RequestStatusSummary,
+            expected_opcode=int(OmniLinkMessageType.StatusSummary),
+        )
+
+        # --- bulk status, small ranges so we can read the bytes ---
+        await _request_or_warn(
+            conn, "ZoneStatus[1..8]", OmniLinkMessageType.RequestZoneStatus,
+            payload=bytes([1, 8]),
+            expected_opcode=int(OmniLinkMessageType.ZoneStatus),
+        )
+        await _request_or_warn(
+            conn, "ZoneExtendedStatus[1..8]", OmniLinkMessageType.RequestZoneExtendedStatus,
+            payload=bytes([1, 8]),
+            expected_opcode=int(OmniLinkMessageType.ZoneExtendedStatus),
+        )
+        await _request_or_warn(
+            conn, "UnitStatus[1..8]", OmniLinkMessageType.RequestUnitStatus,
+            payload=bytes([1, 8]),
+            expected_opcode=int(OmniLinkMessageType.UnitStatus),
+        )
+        await _request_or_warn(
+            conn, "UnitExtendedStatus[1..8]", OmniLinkMessageType.RequestUnitExtendedStatus,
+            payload=bytes([1, 8]),
+            expected_opcode=int(OmniLinkMessageType.UnitExtendedStatus),
+        )
+        await _request_or_warn(
+            conn, "ThermostatStatus[1..4]", OmniLinkMessageType.RequestThermostatStatus,
+            payload=bytes([1, 4]),
+            expected_opcode=int(OmniLinkMessageType.ThermostatStatus),
+        )
+        await _request_or_warn(
+            conn, "ThermostatExtendedStatus[1..4]", OmniLinkMessageType.RequestThermostatExtendedStatus,
+            payload=bytes([1, 4]),
+            expected_opcode=int(OmniLinkMessageType.ThermostatExtendedStatus),
+        )
+        await _request_or_warn(
+            conn, "AuxiliaryStatus[1..8]", OmniLinkMessageType.RequestAuxiliaryStatus,
+            payload=bytes([1, 8]),
+            expected_opcode=int(OmniLinkMessageType.AuxiliaryStatus),
+        )
+
+        # --- discovery: UploadNames is the READ request; DownloadNames is the
+        # WRITE direction (panel <- client). Reply payload is NameData with the
+        # next defined object's number + name.
+        # Per clsOL2MsgUploadNames: [type, num_hi, num_lo, relative_direction].
+        # type: 1=Zone 2=Unit 3=Button 4=Code 5=Thermostat 6=Area 7=Message
+        # relative_direction: +1=next after num, -1=prev before num, 0=exact
+        for type_byte, type_name in [(1, "Zone"), (2, "Unit"), (5, "Thermostat"), (6, "Area")]:
+            await _request_or_warn(
+                conn,
+                f"UploadNames[type={type_name}, after=0, dir=+1]",
+                OmniLinkMessageType.UploadNames,
+                payload=bytes([type_byte, 0, 0, 1]),
+                expected_opcode=int(OmniLinkMessageType.NameData),
+            )
+
+    print("\n--- recon complete, session closed cleanly ---")
+    return 0
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--host", default="192.168.1.9")
+    parser.add_argument("--port", type=int, default=4369)
+    parser.add_argument("--key", help="32 hex chars; overrides env/.omni_key")
+    parser.add_argument("--debug", action="store_true")
+    args = parser.parse_args()
+    logging.basicConfig(
+        level=logging.DEBUG if args.debug else logging.WARNING,
+        format="%(asctime)s %(levelname)s %(name)s: %(message)s",
+    )
+    return asyncio.run(amain(args))
+
+
+if __name__ == "__main__":
+    sys.exit(main())

dev/probe_v1_stream.py

@@ -0,0 +1,118 @@
+#!/usr/bin/env python3
+"""Probe the v1 UploadNames streaming flow.
+
+Sends UploadNames (no payload), then a series of Acknowledge messages,
+dumping each reply until we get an EOD or 30 records (whichever comes
+first). Confirms the lock-step pattern PC Access uses for bulk reads.
+"""
+
+from __future__ import annotations
+
+import argparse
+import asyncio
+import logging
+import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).parent))
+from probe_v1 import _load_key  # type: ignore  # noqa: E402
+
+from omni_pca.opcodes import OmniLinkMessageType
+from omni_pca.v1 import OmniConnectionV1
+
+
+_NAME_TYPE_LABELS = {
+    1: "Zone", 2: "Unit", 3: "Button", 4: "Code",
+    5: "Thermostat", 6: "Area", 7: "Message",
+}
+
+
+def _decode_namedata(payload: bytes) -> str:
+    """Best-effort decode of a NameData payload for display."""
+    if len(payload) < 3:
+        return f"<short payload: {payload.hex()}>"
+    name_type = payload[0]
+    # Heuristic: zones/messages are 15-char names, others 12. With one-byte
+    # NameNumber, payload length = 1 (type) + 1 (num) + L (name) + 1 (term).
+    # With two-byte NameNumber: 1 + 2 + L + 1.
+    L_15 = 15 + 3  # one-byte form, 15-char name
+    L_12 = 12 + 3  # one-byte form, 12-char name
+    if len(payload) == L_15 or len(payload) == L_15 + 1:
+        # 15-char name (Zone or Message), one-byte num.
+        num = payload[1]
+        name = payload[2:2 + 15].rstrip(b"\x00").decode("utf-8", errors="replace")
+    elif len(payload) == L_12 or len(payload) == L_12 + 1:
+        # 12-char name, one-byte num.
+        num = payload[1]
+        name = payload[2:2 + 12].rstrip(b"\x00").decode("utf-8", errors="replace")
+    else:
+        # Two-byte num form (NameNumber > 255): payload[1..2] = BE u16, then name.
+        num = (payload[1] << 8) | payload[2]
+        name = payload[3:].rstrip(b"\x00").decode("utf-8", errors="replace")
+
+    label = _NAME_TYPE_LABELS.get(name_type, f"type{name_type}")
+    return f"{label} #{num}: {name!r}"
+
+
+async def amain(args: argparse.Namespace) -> int:
+    key = _load_key(args.key)
+    print(f"[stream probe] target {args.host}:{args.port}\n")
+
+    async with OmniConnectionV1(
+        host=args.host, port=args.port, controller_key=key, timeout=4.0
+    ) as conn:
+        from omni_pca.message import Message, START_CHAR_V1_UNADDRESSED
+
+        # Step 1: bare UploadNames.
+        upload = Message(
+            start_char=START_CHAR_V1_UNADDRESSED,
+            data=bytes([int(OmniLinkMessageType.UploadNames)]),
+        )
+        seq, fut = conn._send_encrypted(upload)
+        reply = conn._decode_inner(await fut)
+        print(f"reply 1 (seq={seq}): opcode={reply.opcode}  {_decode_namedata(reply.payload) if reply.opcode == int(OmniLinkMessageType.NameData) else f'(payload={reply.payload.hex()!r})'}")
+
+        if reply.opcode != int(OmniLinkMessageType.NameData):
+            print("panel didn't reply with NameData — streaming flow may not apply here")
+            return 0
+
+        # Step 2..N: Acknowledge → next NameData (or EOD).
+        for i in range(2, args.max + 1):
+            ack = Message(
+                start_char=START_CHAR_V1_UNADDRESSED,
+                data=bytes([int(OmniLinkMessageType.Ack)]),
+            )
+            seq, fut = conn._send_encrypted(ack)
+            reply = conn._decode_inner(await fut)
+
+            if reply.opcode == int(OmniLinkMessageType.EOD):
+                print(f"reply {i} (seq={seq}): EOD — end of stream after {i-1} records")
+                return 0
+            if reply.opcode == int(OmniLinkMessageType.NameData):
+                print(f"reply {i} (seq={seq}): {_decode_namedata(reply.payload)}")
+            else:
+                print(f"reply {i} (seq={seq}): unexpected opcode {reply.opcode}, "
+                      f"payload={reply.payload.hex()}")
+                return 1
+
+        print(f"\nstopped after {args.max} replies (no EOD seen)")
+    return 0
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--host", default="192.168.1.9")
+    parser.add_argument("--port", type=int, default=4369)
+    parser.add_argument("--key", help="32 hex chars; overrides env/.omni_key")
+    parser.add_argument("--max", type=int, default=20, help="stop after N replies")
+    parser.add_argument("--debug", action="store_true")
+    args = parser.parse_args()
+    logging.basicConfig(
+        level=logging.DEBUG if args.debug else logging.WARNING,
+        format="%(asctime)s %(levelname)s %(name)s: %(message)s",
+    )
+    return asyncio.run(amain(args))
+
+
+if __name__ == "__main__":
+    sys.exit(main())

dev/probe_v1_write.py

@@ -0,0 +1,93 @@
+#!/usr/bin/env python3
+"""Phase-2c live write smoke test: round-trip a no-op unit command.
+
+Reads the current state of one unit, sends a command that should yield
+the same observable result, then re-reads to confirm. Proves that
+:meth:`OmniClientV1.execute_command` actually flows through the v1
+Command opcode against the real panel without changing anything visible.
+
+Run:
+    cd /home/kdm/home-auto/omni-pca
+    uv run python dev/probe_v1_write.py [--index N]
+
+Default target is unit #4 ('STAIRS' per current panel config).
+"""
+
+from __future__ import annotations
+
+import argparse
+import asyncio
+import logging
+import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).parent))
+from probe_v1 import _load_key  # type: ignore  # noqa: E402
+
+from omni_pca.v1 import OmniClientV1
+
+
+async def amain(args: argparse.Namespace) -> int:
+    key = _load_key(args.key)
+    print(f"[write probe] target {args.host}:{args.port}  unit #{args.index}\n")
+
+    async with OmniClientV1(
+        host=args.host, port=args.port, controller_key=key, timeout=4.0
+    ) as c:
+        before = (await c.get_unit_status(args.index, args.index))[args.index]
+        print(f"BEFORE: state=0x{before.state:02x}  "
+              f"brightness={before.brightness!r}  "
+              f"time_remaining={before.time_remaining_secs}s")
+
+        # Pick the safest no-op command for the unit's current state:
+        # - state == 0 → send UNIT_OFF (already off, panel acks)
+        # - state == 1 → send UNIT_ON (already on, panel acks)
+        # - 100 <= state <= 200 → set_unit_level(percent) at the current level
+        # - otherwise (scene/dim/etc.) → fall back to UNIT_ON which is harmless
+        if before.state == 0:
+            print("ACTION: turn_unit_off (already off, expecting Ack)")
+            await c.turn_unit_off(args.index)
+        elif before.state == 1:
+            print("ACTION: turn_unit_on (already on, expecting Ack)")
+            await c.turn_unit_on(args.index)
+        elif 100 <= before.state <= 200:
+            level = before.state - 100
+            print(f"ACTION: set_unit_level({level}%) (already at this level)")
+            await c.set_unit_level(args.index, level)
+        else:
+            print(f"ACTION: turn_unit_on (state=0x{before.state:02x} is exotic; safe ack expected)")
+            await c.turn_unit_on(args.index)
+
+        # Give the panel ~250ms to settle if it does pulse anything.
+        await asyncio.sleep(0.25)
+
+        after = (await c.get_unit_status(args.index, args.index))[args.index]
+        print(f"AFTER:  state=0x{after.state:02x}  "
+              f"brightness={after.brightness!r}  "
+              f"time_remaining={after.time_remaining_secs}s")
+
+        if after.state == before.state:
+            print("\n✓ panel acked the Command, state unchanged — wire path verified")
+        else:
+            print(f"\n⚠ state changed (0x{before.state:02x} → 0x{after.state:02x}). "
+                  "Probably harmless but worth investigating.")
+    return 0
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--host", default="192.168.1.9")
+    parser.add_argument("--port", type=int, default=4369)
+    parser.add_argument("--key", help="32 hex chars; overrides env/.omni_key")
+    parser.add_argument("--index", type=int, default=4)
+    parser.add_argument("--debug", action="store_true")
+    args = parser.parse_args()
+    logging.basicConfig(
+        level=logging.DEBUG if args.debug else logging.WARNING,
+        format="%(asctime)s %(levelname)s %(name)s: %(message)s",
+    )
+    return asyncio.run(amain(args))
+
+
+if __name__ == "__main__":
+    sys.exit(main())

dev/run_mock_panel.py

@@ -10,8 +10,10 @@ from __future__ import annotations
 import argparse
 import asyncio
 import logging
+import os
 import signal
 import sys
+from pathlib import Path
 
 from omni_pca.mock_panel import (
     MockAreaState,
@@ -22,10 +24,55 @@ from omni_pca.mock_panel import (
     MockUnitState,
     MockZoneState,
 )
+from omni_pca.commands import Command
+from omni_pca.pca_file import KEY_EXPORT, parse_pca01_cfg
+from omni_pca.programs import Days, Program, ProgramType
 
 DEFAULT_KEY_HEX = "000102030405060708090a0b0c0d0e0f"
 
 
+def _seed_programs() -> dict[int, bytes]:
+    """A handful of programs covering compact-form + clausal-chain shapes.
+
+    Slot 200..202 is a chain with a structured-AND condition whose Arg2
+    is itself a Thermostat reference — exercises the Arg2-as-object
+    editor controls.
+    """
+    programs: dict[int, Program] = {
+        12: Program(
+            slot=12, prog_type=int(ProgramType.TIMED),
+            cmd=int(Command.UNIT_ON), pr2=1,
+            hour=6, minute=0, days=int(Days.MONDAY | Days.FRIDAY),
+        ),
+        42: Program(
+            slot=42, prog_type=int(ProgramType.TIMED),
+            cmd=int(Command.UNIT_OFF), pr2=2,
+            hour=22, minute=30, days=int(Days.SUNDAY),
+        ),
+        # Chain: WHEN zone 1 not-ready, AND IF Thermostat 1.Temp >
+        # Thermostat 2.Temp, THEN turn ON unit 3. The AND record is a
+        # structured-OP comparison with Arg2 as a Thermostat reference.
+        200: Program(
+            slot=200, prog_type=int(ProgramType.WHEN),
+            month=0x04, day=0x01,
+        ),
+        201: Program(
+            slot=201, prog_type=int(ProgramType.AND),
+            cond=(4 << 8) | 4,   # op=GT (4), arg1Type=Thermostat (4)
+            cond2=1,             # arg1Ix=1
+            cmd=1,               # arg1Field=current temp
+            par=4,               # arg2Type=Thermostat (4)
+            pr2=2,               # arg2Ix=2
+            month=1,             # arg2Field=current temp
+        ),
+        202: Program(
+            slot=202, prog_type=int(ProgramType.THEN),
+            cmd=int(Command.UNIT_ON), pr2=3,
+        ),
+    }
+    return {slot: p.encode_wire_bytes() for slot, p in programs.items()}
+
+
 def _populated_state() -> MockState:
     """A small but representative set of objects so HA shows real entities."""
     return MockState(
@@ -56,11 +103,50 @@ def _populated_state() -> MockState:
             3: MockButtonState(name="GOODNIGHT"),
         },
         user_codes={1: 1234, 2: 5678},
+        programs=_seed_programs(),
     )
 
 
-async def _serve(host: str, port: int, key: bytes) -> None:
-    panel = MockPanel(controller_key=key, state=_populated_state())
+def _key_for_pca(path: Path, override: int | None) -> int:
+    """Pick the decryption key for a .pca file.
+
+    Priority:
+      1. Explicit override (CLI / env var).
+      2. Per-installation key from a sibling ``PCA01.CFG`` (most common —
+         PC Access ships each export with a matching config file).
+      3. ``KEY_EXPORT`` as a last resort for vanilla exports.
+    """
+    if override is not None:
+        return override
+    cfg_path = path.parent / "PCA01.CFG"
+    if cfg_path.is_file():
+        cfg = parse_pca01_cfg(cfg_path.read_bytes())
+        logging.info("derived pca_key from %s: 0x%08X", cfg_path.name, cfg.pca_key)
+        return cfg.pca_key
+    logging.info("no sibling PCA01.CFG; falling back to KEY_EXPORT")
+    return KEY_EXPORT
+
+
+def _state_from_pca(path: Path, key: int) -> MockState:
+    """Seed a MockState from a real .pca file."""
+    state = MockState.from_pca(str(path), key=key)
+    logging.info(
+        "loaded %s: %d zones, %d units, %d areas, %d thermostats, %d programs",
+        path.name,
+        len(state.zones), len(state.units), len(state.areas),
+        len(state.thermostats), len(state.programs),
+    )
+    return state
+
+
+async def _serve(
+    host: str, port: int, key: bytes, pca: Path | None, pca_key: int | None,
+) -> None:
+    if pca is not None:
+        state = _state_from_pca(pca, _key_for_pca(pca, pca_key))
+    else:
+        state = _populated_state()
+    panel = MockPanel(controller_key=key, state=state)
     async with panel.serve(host=host, port=port) as (bound_host, bound_port):
         logging.info("MockPanel listening on %s:%d", bound_host, bound_port)
         logging.info("Use this controller key in HA: %s", key.hex())
@@ -86,6 +172,23 @@ def main() -> int:
         default=DEFAULT_KEY_HEX,
         help="32 hex chars; default is the docker-compose value",
     )
+    parser.add_argument(
+        "--pca",
+        default=os.environ.get("OMNI_PCA_FIXTURE"),
+        help="Path to a .pca file. When supplied, the mock seeds its "
+             "state from this file instead of the hard-coded sample. "
+             "Can also be set via OMNI_PCA_FIXTURE.",
+    )
+    parser.add_argument(
+        "--pca-key",
+        type=lambda s: int(s, 0),
+        default=(
+            int(os.environ["OMNI_PCA_FIXTURE_KEY"], 0)
+            if os.environ.get("OMNI_PCA_FIXTURE_KEY") else None
+        ),
+        help="32-bit decryption key for --pca. Default: auto-derive from "
+             "a sibling PCA01.CFG, or fall back to KEY_EXPORT.",
+    )
     args = parser.parse_args()
 
     logging.basicConfig(
@@ -104,7 +207,14 @@ def main() -> int:
               file=sys.stderr)
         return 2
 
-    asyncio.run(_serve(args.host, args.port, key))
+    pca_path: Path | None = None
+    if args.pca:
+        pca_path = Path(args.pca)
+        if not pca_path.is_file():
+            print(f"--pca path not found: {pca_path}", file=sys.stderr)
+            return 2
+
+    asyncio.run(_serve(args.host, args.port, key, pca_path, args.pca_key))
     return 0
 
 

dev/screenshot.py

@@ -32,7 +32,17 @@ async def _complete_onboarding(
 ) -> None:
     """POST every remaining onboarding step in turn so HA stops greeting us."""
     r = await client.get("/api/onboarding")
-    pending = [s["step"] for s in r.json() if not s.get("done")]
+    if r.status_code != 200:
+        # Endpoint disappears once onboarding is fully complete — nothing
+        # to do, the user is already past the welcome wizard.
+        print("  onboarding endpoint 404 — already complete")
+        return
+    try:
+        steps = r.json()
+    except Exception:
+        print("  onboarding endpoint returned non-JSON — assuming complete")
+        return
+    pending = [s["step"] for s in steps if not s.get("done")]
     print(f"  pending onboarding: {pending}")
 
     if "core_config" in pending:
@@ -73,7 +83,15 @@ async def _onboard(ha_url: str) -> str:
     """
     async with httpx.AsyncClient(base_url=ha_url, timeout=30.0) as client:
         r = await client.get("/api/onboarding")
+        # Once onboarding is fully complete the endpoint 404s with a
+        # plain-text body instead of a JSON step list — skip straight to
+        # the subsequent-run login path in that case.
+        steps: list[dict] = []
+        if r.status_code == 200:
+            try:
                 steps = r.json()
+            except Exception:
+                steps = []
         user_step = next((s for s in steps if s["step"] == "user"), None)
 
         if user_step and not user_step.get("done"):
@@ -199,7 +217,8 @@ async def _take_screenshots(ha_url: str, token: str, outdir: Path) -> list[Path]
             viewport={"width": 1440, "height": 900},
             device_scale_factor=2,
         )
-        # Inject auth so we skip the login screen.
+        # Inject auth so we skip the login screen + force HA's dark theme
+        # so screenshots match the docs site's default theme.
         await context.add_init_script(
             f"""window.localStorage.setItem('hassTokens', JSON.stringify({{
                 access_token: '{token}',
@@ -211,6 +230,15 @@ async def _take_screenshots(ha_url: str, token: str, outdir: Path) -> list[Path]
                 refresh_token: 'placeholder',
             }}));
             window.localStorage.setItem('selectedLanguage', '"en"');
+            // Force dark theme — HA reads selectedTheme from localStorage
+            // before the user-settings panel loads. The empty 'theme' object
+            // tells HA "use the default dark theme, not a custom one".
+            window.localStorage.setItem('selectedTheme', JSON.stringify({{
+                theme: 'default',
+                dark: true,
+                primaryColor: null,
+                accentColor: null,
+            }}));
             """
         )
         page = await context.new_page()
@@ -270,6 +298,72 @@ async def _take_screenshots(ha_url: str, token: str, outdir: Path) -> list[Path]
         await shot("06-developer-states.png",
                    "/developer-tools/state", wait_secs=4.0)
 
+        # The side panel registered by panel_custom (websocket.py:
+        # async_register_side_panel). If pointed at a real panel the
+        # program list is whatever the homeowner has authored; against
+        # the mock it's whatever ``run_mock_panel.py`` seeded. We
+        # deliberately do NOT write programs from here because the
+        # screenshot script may be aimed at real hardware.
+        await shot("08-side-panel-programs.png",
+                   "/omni-panel-programs", wait_secs=6.0)
+        # Helper: locate the omni-panel-programs element regardless of
+        # what shadow-DOM path HA's panel host wraps it in. Recursive
+        # walk because partial-panel-resolver / hui-view / etc. can
+        # vary between HA versions.
+        find_panel_js = """
+          (() => {
+            function find(root, depth=0) {
+              if (!root || depth > 15) return null;
+              if (root.tagName === 'OMNI-PANEL-PROGRAMS') return root;
+              for (const k of Array.from(root.children || [])) {
+                const r = find(k, depth+1);
+                if (r) return r;
+              }
+              if (root.shadowRoot) {
+                const r = find(root.shadowRoot, depth+1);
+                if (r) return r;
+              }
+              return null;
+            }
+            return find(document.body);
+          })()
+        """
+
+        # Click into the first program row to capture the detail panel.
+        try:
+            await page.evaluate(f"""() => {{
+              const panel = {find_panel_js};
+              if (!panel) {{ console.warn('omni panel not found'); return; }}
+              const row = panel.shadowRoot.querySelector('.row');
+              if (row) row.click();
+            }}""")
+            await page.wait_for_timeout(800)
+        except Exception as e:
+            print(f"    click-into-row warning: {e}")
+        # Re-shoot WITHOUT a navigate (page.goto would reset selection).
+        await page.screenshot(path=str(outdir / "09-side-panel-detail.png"),
+                              full_page=False)
+        shots.append(outdir / "09-side-panel-detail.png")
+        print(f"  → 09-side-panel-detail.png  (in-place)")
+
+        # Click "Edit" to capture the editor mode.
+        try:
+            await page.evaluate(f"""() => {{
+              const panel = {find_panel_js};
+              if (!panel) {{ console.warn('omni panel not found'); return; }}
+              const buttons = panel.shadowRoot.querySelectorAll('.detail button');
+              for (const b of buttons) {{
+                if (b.textContent.trim() === 'Edit') {{ b.click(); break; }}
+              }}
+            }}""")
+            await page.wait_for_timeout(800)
+        except Exception as e:
+            print(f"    click-edit warning: {e}")
+        await page.screenshot(path=str(outdir / "10-side-panel-editor.png"),
+                              full_page=False)
+        shots.append(outdir / "10-side-panel-editor.png")
+        print(f"  → 10-side-panel-editor.png  (in-place)")
+
         await browser.close()
     return shots
 

dev/screenshot_arg2_object.py

@@ -0,0 +1,150 @@
+#!/usr/bin/env python3
+"""Focused screenshot of the structured-AND Arg2-as-object editor.
+
+Drives an already-onboarded HA at localhost:8123, opens the side panel,
+clicks into the chain at slot 200, hits Edit, and snaps the form.
+"""
+
+from __future__ import annotations
+
+import argparse
+import asyncio
+import json
+import sys
+from datetime import datetime
+from pathlib import Path
+
+import httpx
+from playwright.async_api import async_playwright
+
+HA_URL = "http://localhost:8123"
+USERNAME = "demo"
+PASSWORD = "demo-password-1234"
+
+
+async def _login_token() -> str:
+    async with httpx.AsyncClient(base_url=HA_URL, timeout=30) as c:
+        r = await c.post(
+            "/auth/login_flow",
+            json={
+                "client_id": HA_URL,
+                "handler": ["homeassistant", None],
+                "redirect_uri": HA_URL,
+            },
+        )
+        flow_id = r.json()["flow_id"]
+        r = await c.post(
+            f"/auth/login_flow/{flow_id}",
+            json={
+                "username": USERNAME,
+                "password": PASSWORD,
+                "client_id": HA_URL,
+            },
+        )
+        code = r.json()["result"]
+        r = await c.post(
+            "/auth/token",
+            data={
+                "client_id": HA_URL,
+                "grant_type": "authorization_code",
+                "code": code,
+            },
+        )
+        return r.json()["access_token"]
+
+
+FIND_PANEL = """
+  (() => {
+    function find(root, depth=0) {
+      if (!root || depth > 15) return null;
+      if (root.tagName === 'OMNI-PANEL-PROGRAMS') return root;
+      for (const k of Array.from(root.children || [])) {
+        const r = find(k, depth+1);
+        if (r) return r;
+      }
+      if (root.shadowRoot) {
+        const r = find(root.shadowRoot, depth+1);
+        if (r) return r;
+      }
+      return null;
+    }
+    return find(document.body);
+  })()
+"""
+
+
+async def amain(outdir: Path) -> None:
+    token = await _login_token()
+    outdir.mkdir(parents=True, exist_ok=True)
+    async with async_playwright() as p:
+        browser = await p.chromium.launch()
+        context = await browser.new_context(viewport={"width": 1400, "height": 900})
+        await context.add_init_script(f"""
+          window.localStorage.setItem(
+            'hassTokens',
+            JSON.stringify({{
+              access_token: '{token}',
+              token_type: 'Bearer',
+              refresh_token: '',
+              expires: Date.now() + 3600000,
+              hassUrl: '{HA_URL}',
+              clientId: '{HA_URL}',
+            }})
+          );
+          window.localStorage.setItem('selectedTheme', JSON.stringify({{dark: false}}));
+        """)
+        page = await context.new_page()
+
+        page.on("console", lambda m: print(f"  [browser] {m.type}: {m.text}"))
+
+        await page.goto(f"{HA_URL}/omni-panel-programs", wait_until="domcontentloaded")
+        await page.wait_for_timeout(6000)
+
+        # Click the chain row (slot 200).
+        ok = await page.evaluate(f"""() => {{
+          const panel = {FIND_PANEL};
+          if (!panel) return 'no-panel';
+          const rows = Array.from(panel.shadowRoot.querySelectorAll('.row'));
+          const target = rows.find(r => r.textContent.includes('200'));
+          if (!target) return 'no-row-200 ' + rows.map(r => r.textContent.slice(0,40)).join(' | ');
+          target.click();
+          return 'clicked';
+        }}""")
+        print(f"  row-click: {ok}")
+        await page.wait_for_timeout(800)
+
+        # Click Edit.
+        ok = await page.evaluate(f"""() => {{
+          const panel = {FIND_PANEL};
+          if (!panel) return 'no-panel';
+          const buttons = panel.shadowRoot.querySelectorAll('.detail button');
+          for (const b of buttons) {{
+            if (b.textContent.trim() === 'Edit') {{ b.click(); return 'clicked'; }}
+          }}
+          return 'no-edit-button';
+        }}""")
+        print(f"  edit-click: {ok}")
+        await page.wait_for_timeout(1500)
+
+        path = outdir / "arg2-object-editor.png"
+        await page.screenshot(path=str(path), full_page=True)
+        print(f"  wrote {path}")
+
+        await browser.close()
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "--outdir",
+        type=Path,
+        default=Path(__file__).parent / "artifacts" / "screenshots" /
+            datetime.now().strftime("%Y-%m-%d"),
+    )
+    args = parser.parse_args()
+    asyncio.run(amain(args.outdir))
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

dev/screenshot_overview.py

@@ -0,0 +1,63 @@
+#!/usr/bin/env python3
+"""Quick screenshot of the Omni Programs side panel landing page."""
+
+from __future__ import annotations
+
+import asyncio
+import sys
+from datetime import datetime
+from pathlib import Path
+
+import httpx
+from playwright.async_api import async_playwright
+
+HA_URL = "http://localhost:8123"
+USERNAME = "demo"
+PASSWORD = "demo-password-1234"
+
+
+async def _login_token() -> str:
+    async with httpx.AsyncClient(base_url=HA_URL, timeout=30) as c:
+        r = await c.post("/auth/login_flow", json={
+            "client_id": HA_URL, "handler": ["homeassistant", None],
+            "redirect_uri": HA_URL,
+        })
+        flow_id = r.json()["flow_id"]
+        r = await c.post(f"/auth/login_flow/{flow_id}", json={
+            "username": USERNAME, "password": PASSWORD, "client_id": HA_URL,
+        })
+        code = r.json()["result"]
+        r = await c.post("/auth/token", data={
+            "client_id": HA_URL, "grant_type": "authorization_code", "code": code,
+        })
+        return r.json()["access_token"]
+
+
+async def amain(outdir: Path) -> None:
+    token = await _login_token()
+    outdir.mkdir(parents=True, exist_ok=True)
+    async with async_playwright() as p:
+        browser = await p.chromium.launch()
+        context = await browser.new_context(viewport={"width": 1400, "height": 900})
+        await context.add_init_script(f"""
+          window.localStorage.setItem('hassTokens', JSON.stringify({{
+            access_token: '{token}', token_type: 'Bearer', refresh_token: '',
+            expires: Date.now() + 3600000, hassUrl: '{HA_URL}', clientId: '{HA_URL}',
+          }}));
+          window.localStorage.setItem('selectedTheme', JSON.stringify({{dark: false}}));
+        """)
+        page = await context.new_page()
+        await page.goto(f"{HA_URL}/omni-panel-programs", wait_until="domcontentloaded")
+        await page.wait_for_timeout(8000)
+        path = outdir / "real-pca-overview.png"
+        await page.screenshot(path=str(path), full_page=True)
+        print(f"  wrote {path}")
+        await browser.close()
+
+
+if __name__ == "__main__":
+    outdir = Path(sys.argv[1]) if len(sys.argv) > 1 else (
+        Path(__file__).parent / "artifacts" / "screenshots" /
+        datetime.now().strftime("%Y-%m-%d")
+    )
+    asyncio.run(amain(outdir))

grafana/.env.example

@@ -0,0 +1,19 @@
+# Copy to .env and fill in. Both files in this directory load .env
+# automatically via docker compose; ./env.example is committed, .env
+# is gitignored.
+
+# InfluxDB v2 admin user (created on first boot).
+INFLUX_USERNAME=admin
+INFLUX_PASSWORD=change-me-strong-password-here
+
+# Admin token used by Home Assistant (writes) and Grafana (reads).
+# Generate one with: openssl rand -hex 32
+INFLUX_TOKEN=replace-with-a-real-token-from-openssl-rand-hex-32
+
+# Grafana admin password (UI login as "admin"/this value).
+GRAFANA_PASSWORD=change-me-too
+
+# Public hostnames if you're putting either service behind a reverse
+# proxy. Leave blank for localhost-only access.
+INFLUX_PUBLIC_HOST=
+GRAFANA_PUBLIC_HOST=

grafana/README.md

@@ -0,0 +1,129 @@
+# Grafana dashboard for omni_pca
+
+InfluxDB v2 + Grafana stack pre-provisioned to visualise an HAI/Leviton
+Omni Pro II panel via the `omni_pca` Home Assistant integration.
+Drop-in for any existing HA install — no integration changes required.
+
+![Dashboard overview](../dev/artifacts/screenshots/2026-05-17/grafana-dashboard-final.png)
+
+## What you get
+
+One dashboard, four rows:
+
+- **System health** — AC power, backup battery, system trouble, event count (24h).
+- **Security** — area arming state timeline, recent push-event log, zone trip timeline.
+- **Climate** — per-thermostat current temperatures + setpoints, HVAC mode timeline.
+- **Activity** — event rate by typed event class, unit brightness heatmap.
+
+Data flows: HA entity state → HA's `influxdb:` integration → InfluxDB
+v2 bucket → Grafana Flux queries → dashboard panels.
+
+## Quick start (~5 minutes)
+
+```bash
+cd grafana/
+cp .env.example .env
+# Edit .env — set strong INFLUX_PASSWORD, INFLUX_TOKEN, GRAFANA_PASSWORD.
+# Generate the token with: openssl rand -hex 32
+
+docker compose up -d
+```
+
+Wait ~30 seconds. InfluxDB does first-boot setup (creates the
+`omni-pca` org, `ha` bucket, admin token); Grafana then auto-provisions
+the InfluxDB datasource and the dashboard.
+
+Then add the influxdb integration to your Home Assistant config:
+
+```bash
+# Paste the contents of ha-snippet.yaml into your configuration.yaml.
+# Add `influxdb_token: <your INFLUX_TOKEN from .env>` to your secrets.yaml.
+# Restart HA.
+```
+
+Within ~30 seconds you should see real-time data populating the
+dashboard at <http://localhost:3000> (login: `admin` / your
+`GRAFANA_PASSWORD`).
+
+## Networking notes
+
+The default `ha-snippet.yaml` assumes HA and InfluxDB sit on the same
+docker network and HA can reach `influxdb:8086` by container name.
+Three common variants:
+
+| HA layout | `host:` value |
+|---|---|
+| Same compose stack as this bundle | `influxdb` |
+| HA on the host, InfluxDB in docker | `host.docker.internal` or your LAN IP |
+| Different machine entirely | the InfluxDB host's IP / FQDN |
+
+If you put either service behind a reverse proxy with TLS, set `ssl:
+true` in the HA snippet and supply the public hostname.
+
+## Iterating on the dashboard
+
+The dashboard JSON at `provisioning/dashboards/omni-pro-ii.json` is
+loaded read-only by the provisioner. To change it:
+
+1. Edit the JSON directly, then `docker compose restart grafana`
+   (provisioner picks up changes within ~30s).
+2. Or use the Grafana UI to experiment, then **Dashboard settings →
+   JSON Model → Save to file** and overwrite the file in this repo.
+
+Provisioned dashboards can't be saved from the UI by design — this is
+intentional, so the file on disk stays the source of truth.
+
+## Extending coverage
+
+The bundle is scoped to the `omni_pca` entity surface via the
+`entity_globs: ["*omni*"]` filter in `ha-snippet.yaml`. Drop that
+filter (or add a second `include:` block) if you want to graph other
+HA entities alongside omni data — Grafana's datasource is general
+InfluxDB v2, nothing in the dashboard JSON hard-codes omni-specific
+field names beyond what you'd want to scope to anyway.
+
+A few panel ideas not yet shipped:
+
+- Alarm activation drill-down — filter the event log to
+  `event_type == "alarm_activated"` and show the `alarm_type`
+  (Burglary / Fire / Auxiliary / …) distribution.
+- Zone trip rate histogram — `binary_sensor` zone changes per zone
+  per hour, useful for spotting flaky sensors.
+- Comm health — track integration coordinator state via the panel
+  device's "Comm error" attribute.
+
+## Files in this bundle
+
+| File | Purpose |
+|---|---|
+| `docker-compose.yml` | InfluxDB v2 + Grafana services |
+| `.env.example` | Required environment template |
+| `ha-snippet.yaml` | HA configuration.yaml additions |
+| `provisioning/datasources/influxdb.yml` | Auto-wires the datasource |
+| `provisioning/dashboards/dashboards.yml` | Provisioner config |
+| `provisioning/dashboards/omni-pro-ii.json` | The dashboard JSON |
+
+## Troubleshooting
+
+**"No data" in panels.** Most panels need either continuous state
+updates (climate, security) or push events (event-driven panels).
+Verify HA is shipping data:
+
+```bash
+docker exec -it omni-pca-influxdb influx query \
+  'from(bucket:"ha") |> range(start:-5m) |> limit(n:5)' \
+  --token "$INFLUX_TOKEN" --org omni-pca
+```
+
+If this returns rows, the pipeline is healthy and panels will fill in
+as the panel does interesting things. If it's empty, check HA logs for
+`[homeassistant.components.influxdb]` errors.
+
+**Dashboard didn't auto-load.** Check `docker logs omni-pca-grafana
+2>&1 | grep -i provision` — provisioner errors show up there.
+
+**Stat panels show duplicate values.** Your HA has multiple entities
+matching the regex (e.g. `omni_pro_ii_ac_power` AND
+`omni_pro_ii_ac_power_2` from prior integration reloads). Clean up the
+duplicates in HA's entity registry, or tighten the filter in the
+dashboard JSON.

grafana/docker-compose.yml

@@ -0,0 +1,69 @@
+# Self-contained InfluxDB v2 + Grafana stack for the omni_pca
+# integration. Pre-provisioned with the InfluxDB datasource and the
+# "Omni Pro II — Panel Overview" dashboard.
+#
+# Usage:
+#   cp .env.example .env  &&  edit the secrets  &&  docker compose up -d
+#   open http://localhost:3000  (admin / $GRAFANA_PASSWORD)
+#
+# Then paste the contents of ha-snippet.yaml into your HA
+# configuration.yaml (and add `influxdb_token: $INFLUX_TOKEN` to
+# secrets.yaml). Restart HA. Within 30s the dashboard's panels start
+# filling in.
+
+services:
+  influxdb:
+    image: influxdb:2.7-alpine
+    container_name: omni-pca-influxdb
+    restart: unless-stopped
+    environment:
+      DOCKER_INFLUXDB_INIT_MODE: setup
+      DOCKER_INFLUXDB_INIT_USERNAME: ${INFLUX_USERNAME:-admin}
+      DOCKER_INFLUXDB_INIT_PASSWORD: ${INFLUX_PASSWORD}
+      DOCKER_INFLUXDB_INIT_ORG: omni-pca
+      DOCKER_INFLUXDB_INIT_BUCKET: ha
+      DOCKER_INFLUXDB_INIT_ADMIN_TOKEN: ${INFLUX_TOKEN}
+      DOCKER_INFLUXDB_INIT_RETENTION: 30d
+    volumes:
+      - influxdb-data:/var/lib/influxdb2
+      - influxdb-config:/etc/influxdb2
+    ports:
+      - "8086:8086"
+    healthcheck:
+      test: ["CMD", "wget", "-qO-", "http://127.0.0.1:8086/health"]
+      interval: 10s
+      timeout: 3s
+      retries: 5
+      start_period: 10s
+
+  grafana:
+    image: grafana/grafana:11.4.0
+    container_name: omni-pca-grafana
+    restart: unless-stopped
+    depends_on:
+      influxdb:
+        condition: service_healthy
+    environment:
+      GF_SECURITY_ADMIN_PASSWORD: ${GRAFANA_PASSWORD}
+      GF_AUTH_ANONYMOUS_ENABLED: "false"
+      GF_USERS_ALLOW_SIGN_UP: "false"
+      GF_LOG_LEVEL: warn
+      # Consumed by ./provisioning/datasources/influxdb.yml
+      INFLUX_URL: http://influxdb:8086
+      INFLUX_TOKEN: ${INFLUX_TOKEN}
+    volumes:
+      - grafana-data:/var/lib/grafana
+      - ./provisioning:/etc/grafana/provisioning:ro
+    ports:
+      - "3000:3000"
+    healthcheck:
+      test: ["CMD-SHELL", "wget -qO- http://127.0.0.1:3000/api/health || exit 1"]
+      interval: 10s
+      timeout: 3s
+      retries: 5
+      start_period: 15s
+
+volumes:
+  influxdb-data:
+  influxdb-config:
+  grafana-data:

grafana/ha-snippet.yaml

@@ -0,0 +1,51 @@
+# Paste this block into your Home Assistant configuration.yaml.
+#
+# Prerequisites:
+#   1. The grafana stack from this directory is running:
+#        cd grafana/ && cp .env.example .env && docker compose up -d
+#   2. Your HA instance can reach the influxdb container on port 8086.
+#      Common patterns:
+#        - HA and InfluxDB on the same compose stack: use host=influxdb
+#        - HA and InfluxDB on different hosts: use host=<your-influx-ip>
+#        - HA on the host network, InfluxDB in docker: use
+#          host=host.docker.internal or the host's LAN IP
+#   3. Add `influxdb_token: <your INFLUX_TOKEN from .env>` to your
+#      secrets.yaml. Restart HA after editing both files.
+#
+# What this ships:
+#   - All state changes from omni_pca entities (alarm_control_panel,
+#     binary_sensor, climate, event, light, sensor, switch).
+#   - Event entity attributes carried as fields, including the typed
+#     event_class and event_data payload — so Flux queries can filter
+#     by alarm_type, zone_index, etc.
+#
+# Adjust the entity_globs filter if you also want non-omni entities in
+# the dashboard, or tighten it further to scope by area / device.
+
+influxdb:
+  api_version: 2
+  host: influxdb           # change to match your network layout
+  port: 8086
+  ssl: false
+  verify_ssl: false
+  token: !secret influxdb_token
+  organization: omni-pca
+  bucket: ha
+  precision: s
+
+  # Tag the typed event kind so Flux queries can filter by it cheaply.
+  tags_attributes:
+    - event_type
+    - event_class
+
+  include:
+    domains:
+      - alarm_control_panel
+      - binary_sensor
+      - climate
+      - event
+      - light
+      - sensor
+      - switch
+    entity_globs:
+      - "*omni*"           # scope to omni_pca entities only

grafana/provisioning/dashboards/dashboards.yml

@@ -0,0 +1,19 @@
+# Tells Grafana to scan /etc/grafana/provisioning/dashboards for
+# *.json dashboard files at boot. Picks up omni-pro-ii.json
+# automatically. Dashboards loaded this way are read-only in the UI;
+# the source of truth is the JSON in this directory.
+
+apiVersion: 1
+
+providers:
+  - name: omni-pca
+    orgId: 1
+    folder: ''
+    folderUid: ''
+    type: file
+    disableDeletion: false
+    updateIntervalSeconds: 30
+    allowUiUpdates: false
+    options:
+      path: /etc/grafana/provisioning/dashboards
+      foldersFromFilesStructure: false

grafana/provisioning/dashboards/omni-pro-ii.json

@@ -0,0 +1,682 @@
+{
+  "annotations": {
+    "list": [
+      {
+        "builtIn": 1,
+        "datasource": {"type": "grafana", "uid": "-- Grafana --"},
+        "enable": true,
+        "hide": true,
+        "iconColor": "rgba(0, 211, 255, 1)",
+        "name": "Annotations & Alerts",
+        "type": "dashboard"
+      }
+    ]
+  },
+  "description": "Live view of an HAI/Leviton Omni Pro II panel surfaced by the omni_pca Home Assistant integration. System health, security activity, climate trends, and the typed push-event stream — all sourced from InfluxDB writes shipped by HA's influxdb integration.",
+  "editable": true,
+  "fiscalYearStartMonth": 0,
+  "graphTooltip": 1,
+  "id": null,
+  "links": [],
+  "liveNow": false,
+  "panels": [
+    {
+      "collapsed": false,
+      "gridPos": {"h": 1, "w": 24, "x": 0, "y": 0},
+      "id": 100,
+      "panels": [],
+      "title": "System health",
+      "type": "row"
+    },
+    {
+      "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+      "fieldConfig": {
+        "defaults": {
+          "color": {"mode": "thresholds"},
+          "mappings": [
+            {"options": {"0": {"color": "red", "index": 0, "text": "LOST"}}, "type": "value"},
+            {"options": {"1": {"color": "green", "index": 1, "text": "OK"}}, "type": "value"}
+          ],
+          "thresholds": {"mode": "absolute", "steps": [{"color": "red"}, {"color": "green", "value": 1}]},
+          "unit": "none"
+        }
+      },
+      "gridPos": {"h": 5, "w": 6, "x": 0, "y": 1},
+      "id": 101,
+      "options": {
+        "colorMode": "background",
+        "graphMode": "none",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {"calcs": ["lastNotNull"], "fields": "", "values": false},
+        "textMode": "auto"
+      },
+      "pluginVersion": "11.4.0",
+      "targets": [
+        {
+          "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+          "query": "from(bucket: \"ha\")\n  |> range(start: -24h)\n  |> filter(fn: (r) => r.domain == \"binary_sensor\")\n  |> filter(fn: (r) => r.entity_id =~ /ac_power/ and not (r.entity_id =~ /_[0-9]+$/))\n  |> filter(fn: (r) => r._field == \"value\")\n  |> last()\n  |> group()",
+          "refId": "A"
+        }
+      ],
+      "title": "AC power",
+      "type": "stat"
+    },
+    {
+      "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+      "fieldConfig": {
+        "defaults": {
+          "color": {"mode": "thresholds"},
+          "mappings": [
+            {"options": {"0": {"color": "green", "index": 0, "text": "OK"}}, "type": "value"},
+            {"options": {"1": {"color": "red", "index": 1, "text": "LOW"}}, "type": "value"}
+          ],
+          "thresholds": {"mode": "absolute", "steps": [{"color": "green"}, {"color": "red", "value": 1}]}
+        }
+      },
+      "gridPos": {"h": 5, "w": 6, "x": 6, "y": 1},
+      "id": 102,
+      "options": {
+        "colorMode": "background",
+        "graphMode": "none",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {"calcs": ["lastNotNull"], "fields": "", "values": false},
+        "textMode": "auto"
+      },
+      "pluginVersion": "11.4.0",
+      "targets": [
+        {
+          "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+          "query": "from(bucket: \"ha\")\n  |> range(start: -24h)\n  |> filter(fn: (r) => r.domain == \"binary_sensor\")\n  |> filter(fn: (r) => r.entity_id =~ /battery/ and not (r.entity_id =~ /_[0-9]+$/))\n  |> filter(fn: (r) => r._field == \"value\")\n  |> last()\n  |> group()",
+          "refId": "A"
+        }
+      ],
+      "title": "Backup battery",
+      "type": "stat"
+    },
+    {
+      "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+      "fieldConfig": {
+        "defaults": {
+          "color": {"mode": "thresholds"},
+          "mappings": [
+            {"options": {"0": {"color": "green", "index": 0, "text": "Clear"}}, "type": "value"},
+            {"options": {"1": {"color": "red", "index": 1, "text": "Trouble"}}, "type": "value"}
+          ],
+          "thresholds": {"mode": "absolute", "steps": [{"color": "green"}, {"color": "red", "value": 1}]}
+        }
+      },
+      "gridPos": {"h": 5, "w": 6, "x": 12, "y": 1},
+      "id": 103,
+      "options": {
+        "colorMode": "background",
+        "graphMode": "none",
+        "reduceOptions": {"calcs": ["lastNotNull"], "fields": "", "values": false},
+        "textMode": "auto"
+      },
+      "pluginVersion": "11.4.0",
+      "targets": [
+        {
+          "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+          "query": "from(bucket: \"ha\")\n  |> range(start: -24h)\n  |> filter(fn: (r) => r.domain == \"binary_sensor\")\n  |> filter(fn: (r) => r.entity_id =~ /trouble/ and not (r.entity_id =~ /_[0-9]+$/))\n  |> filter(fn: (r) => r._field == \"value\")\n  |> last()\n  |> group()",
+          "refId": "A"
+        }
+      ],
+      "title": "System trouble",
+      "type": "stat"
+    },
+    {
+      "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+      "description": "Count of panel push events in the last 24 hours. Empty until the panel pushes its first event (the mock fires events when HA actions trigger panel state changes; a real panel pushes continuously).",
+      "fieldConfig": {
+        "defaults": {
+          "color": {"mode": "thresholds"},
+          "thresholds": {"mode": "absolute", "steps": [{"color": "blue"}, {"color": "green", "value": 1}]},
+          "unit": "short"
+        }
+      },
+      "gridPos": {"h": 5, "w": 6, "x": 18, "y": 1},
+      "id": 104,
+      "options": {
+        "colorMode": "background",
+        "graphMode": "area",
+        "reduceOptions": {"calcs": ["lastNotNull"], "fields": "", "values": false},
+        "textMode": "auto"
+      },
+      "pluginVersion": "11.4.0",
+      "targets": [
+        {
+          "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+          "query": "from(bucket: \"ha\")\n  |> range(start: -24h)\n  |> filter(fn: (r) => r.domain == \"event\")\n  |> filter(fn: (r) => r._field == \"state\")\n  |> group()\n  |> count()",
+          "refId": "A"
+        }
+      ],
+      "title": "Events (24h)",
+      "type": "stat"
+    },
+    {
+      "collapsed": false,
+      "gridPos": {"h": 1, "w": 24, "x": 0, "y": 6},
+      "id": 200,
+      "panels": [],
+      "title": "Security",
+      "type": "row"
+    },
+    {
+      "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+      "description": "Arming state per area. Disarmed = green, day = teal, night = blue, away = orange, vacation = magenta, triggered = red, arming/pending = yellow.",
+      "fieldConfig": {
+        "defaults": {
+          "color": {"mode": "thresholds"},
+          "custom": {"fillOpacity": 80, "lineWidth": 0},
+          "mappings": [
+            {"options": {"disarmed":             {"color": "#43aa8b", "text": "disarmed"}},      "type": "value"},
+            {"options": {"armed_home":           {"color": "#577590", "text": "armed home"}},     "type": "value"},
+            {"options": {"armed_night":          {"color": "#277da1", "text": "armed night"}},    "type": "value"},
+            {"options": {"armed_away":           {"color": "#f8961e", "text": "armed away"}},     "type": "value"},
+            {"options": {"armed_vacation":       {"color": "#a663cc", "text": "armed vacation"}}, "type": "value"},
+            {"options": {"armed_custom_bypass":  {"color": "#90be6d", "text": "armed custom"}},   "type": "value"},
+            {"options": {"arming":               {"color": "#f9c74f", "text": "arming"}},         "type": "value"},
+            {"options": {"pending":              {"color": "#f9c74f", "text": "pending"}},        "type": "value"},
+            {"options": {"triggered":            {"color": "#d62828", "text": "TRIGGERED"}},      "type": "value"}
+          ],
+          "thresholds": {"mode": "absolute", "steps": [{"color": "#6c757d"}]}
+        }
+      },
+      "gridPos": {"h": 8, "w": 12, "x": 0, "y": 7},
+      "id": 201,
+      "options": {
+        "legend": {"displayMode": "list", "placement": "bottom", "showLegend": true},
+        "mergeValues": true,
+        "rowHeight": 0.9,
+        "showValue": "auto",
+        "tooltip": {"mode": "single"}
+      },
+      "pluginVersion": "11.4.0",
+      "targets": [
+        {
+          "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+          "query": "from(bucket: \"ha\")\n  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)\n  |> filter(fn: (r) => r.domain == \"alarm_control_panel\")\n  |> filter(fn: (r) => r._field == \"state\")\n  |> filter(fn: (r) => not (r.entity_id =~ /_[0-9]+$/))\n  |> keep(columns: [\"_time\", \"_value\", \"entity_id\"])\n  |> group(columns: [\"entity_id\"])",
+          "refId": "A"
+        }
+      ],
+      "title": "Area arming state",
+      "type": "state-timeline"
+    },
+    {
+      "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+      "description": "Push events the panel sent in the selected window. Columns: time, typed event_type, object index (zone / unit / area / user), and new_state for state-changed events.",
+      "fieldConfig": {
+        "defaults": {
+          "color": {"mode": "thresholds"},
+          "custom": {
+            "align": "auto",
+            "cellOptions": {"type": "auto"},
+            "inspect": false
+          },
+          "thresholds": {"mode": "absolute", "steps": [{"color": "transparent"}]}
+        },
+        "overrides": [
+          {
+            "matcher": {"id": "byName", "options": "event_type"},
+            "properties": [
+              {"id": "custom.cellOptions", "value": {"type": "color-background", "mode": "basic"}},
+              {"id": "mappings", "value": [
+                {"options": {"alarm_activated":     {"color": "#d62828", "text": "alarm_activated"}},     "type": "value"},
+                {"options": {"alarm_cleared":       {"color": "#43aa8b", "text": "alarm_cleared"}},       "type": "value"},
+                {"options": {"ac_lost":             {"color": "#d62828", "text": "ac_lost"}},             "type": "value"},
+                {"options": {"ac_restored":         {"color": "#43aa8b", "text": "ac_restored"}},         "type": "value"},
+                {"options": {"battery_low":         {"color": "#f8961e", "text": "battery_low"}},         "type": "value"},
+                {"options": {"battery_restored":    {"color": "#43aa8b", "text": "battery_restored"}},    "type": "value"},
+                {"options": {"zone_state_changed":  {"color": "#577590", "text": "zone_state_changed"}},  "type": "value"},
+                {"options": {"unit_state_changed":  {"color": "#90be6d", "text": "unit_state_changed"}},  "type": "value"},
+                {"options": {"arming_changed":      {"color": "#f9c74f", "text": "arming_changed"}},      "type": "value"},
+                {"options": {"user_macro_button":   {"color": "#277da1", "text": "user_macro_button"}},   "type": "value"},
+                {"options": {"phone_line_dead":     {"color": "#f8961e", "text": "phone_line_dead"}},     "type": "value"},
+                {"options": {"phone_line_restored": {"color": "#43aa8b", "text": "phone_line_restored"}}, "type": "value"}
+              ]}
+            ]
+          },
+          {
+            "matcher": {"id": "byName", "options": "_time"},
+            "properties": [
+              {"id": "custom.width", "value": 175},
+              {"id": "displayName", "value": "time"}
+            ]
+          }
+        ]
+      },
+      "gridPos": {"h": 8, "w": 12, "x": 12, "y": 7},
+      "id": 202,
+      "options": {
+        "cellHeight": "sm",
+        "footer": {"countRows": false, "fields": "", "reducer": ["sum"], "show": false},
+        "showHeader": true,
+        "sortBy": [{"desc": true, "displayName": "time"}]
+      },
+      "pluginVersion": "11.4.0",
+      "targets": [
+        {
+          "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+          "query": "from(bucket: \"ha\")\n  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)\n  |> filter(fn: (r) => r.domain == \"event\")\n  |> filter(fn: (r) => r._field == \"new_state\" or r._field == \"unit_index\" or r._field == \"zone_index\" or r._field == \"area_index\" or r._field == \"user_index\" or r._field == \"alarm_type\" or r._field == \"button_index\")\n  |> pivot(rowKey: [\"_time\", \"event_type\"], columnKey: [\"_field\"], valueColumn: \"_value\")\n  |> drop(columns: [\"_start\", \"_stop\", \"_measurement\", \"domain\", \"entity_id\", \"event_class\"])\n  |> group()\n  |> sort(columns: [\"_time\"], desc: true)\n  |> limit(n: 50)",
+          "refId": "A"
+        }
+      ],
+      "title": "Recent panel events",
+      "type": "table"
+    },
+    {
+      "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+      "description": "Zone open/closed timeline. Painted segments = zone is_on (open / tripped).",
+      "fieldConfig": {
+        "defaults": {
+          "color": {"mode": "thresholds"},
+          "custom": {"fillOpacity": 70, "lineWidth": 0},
+          "mappings": [
+            {"options": {"0": {"color": "green", "index": 0, "text": "secure"}}, "type": "value"},
+            {"options": {"1": {"color": "orange", "index": 1, "text": "open"}}, "type": "value"}
+          ],
+          "thresholds": {"mode": "absolute", "steps": [{"color": "green"}, {"color": "orange", "value": 1}]}
+        }
+      },
+      "gridPos": {"h": 8, "w": 24, "x": 0, "y": 15},
+      "id": 203,
+      "options": {
+        "legend": {"displayMode": "list", "placement": "bottom", "showLegend": false},
+        "mergeValues": true,
+        "rowHeight": 0.9,
+        "showValue": "never",
+        "tooltip": {"mode": "single"}
+      },
+      "pluginVersion": "11.4.0",
+      "targets": [
+        {
+          "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+          "query": "from(bucket: \"ha\")\n  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)\n  |> filter(fn: (r) => r.domain == \"binary_sensor\")\n  |> filter(fn: (r) => not (r.entity_id =~ /ac_power|battery|trouble|bypass|_[0-9]+$/))\n  |> filter(fn: (r) => r._field == \"value\")\n  |> keep(columns: [\"_time\", \"_value\", \"entity_id\"])\n  |> group(columns: [\"entity_id\"])",
+          "refId": "A"
+        }
+      ],
+      "title": "Zone trip timeline",
+      "type": "state-timeline"
+    },
+    {
+      "collapsed": false,
+      "gridPos": {"h": 1, "w": 24, "x": 0, "y": 23},
+      "id": 300,
+      "panels": [],
+      "title": "Climate",
+      "type": "row"
+    },
+    {
+      "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+      "description": "Current temperature per thermostat. Mock fixture values are raw panel format; a real panel reports °F.",
+      "fieldConfig": {
+        "defaults": {
+          "color": {"mode": "fixed", "fixedColor": "#f1faee"},
+          "custom": {
+            "axisPlacement": "auto",
+            "drawStyle": "line",
+            "fillOpacity": 8,
+            "gradientMode": "opacity",
+            "lineInterpolation": "stepBefore",
+            "lineWidth": 2,
+            "pointSize": 4,
+            "showPoints": "auto",
+            "spanNulls": true
+          },
+          "unit": "celsius"
+        },
+        "overrides": [
+          {
+            "matcher": {"id": "byFrameRefID", "options": "A"},
+            "properties": [{"id": "color", "value": {"mode": "palette-classic-by-name"}}]
+          }
+        ]
+      },
+      "gridPos": {"h": 9, "w": 16, "x": 0, "y": 24},
+      "id": 301,
+      "options": {
+        "legend": {"calcs": ["mean", "lastNotNull"], "displayMode": "table", "placement": "right", "showLegend": true},
+        "tooltip": {"mode": "multi", "sort": "desc"}
+      },
+      "pluginVersion": "11.4.0",
+      "targets": [
+        {
+          "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+          "query": "from(bucket: \"ha\")\n  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)\n  |> filter(fn: (r) => r.domain == \"climate\")\n  |> filter(fn: (r) => not (r.entity_id =~ /_[0-9]+$/))\n  |> filter(fn: (r) => r._field == \"current_temperature\")\n  |> keep(columns: [\"_time\", \"_value\", \"entity_id\"])\n  |> group(columns: [\"entity_id\"])\n  |> aggregateWindow(every: v.windowPeriod, fn: mean, createEmpty: false)",
+          "refId": "A"
+        }
+      ],
+      "title": "Thermostat temperatures",
+      "type": "timeseries"
+    },
+    {
+      "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+      "description": "HVAC system mode per thermostat over the selected window. Off = grey, Heat = orange, Cool = blue, Auto = green, Dry = teal, Fan only = yellow.",
+      "fieldConfig": {
+        "defaults": {
+          "color": {"mode": "thresholds"},
+          "custom": {"fillOpacity": 80, "lineWidth": 0},
+          "mappings": [
+            {"options": {"off":      {"color": "#adb5bd", "text": "off"}},      "type": "value"},
+            {"options": {"heat":     {"color": "#f3722c", "text": "heat"}},     "type": "value"},
+            {"options": {"cool":     {"color": "#277da1", "text": "cool"}},     "type": "value"},
+            {"options": {"heat_cool":{"color": "#43aa8b", "text": "auto"}},     "type": "value"},
+            {"options": {"auto":     {"color": "#43aa8b", "text": "auto"}},     "type": "value"},
+            {"options": {"dry":      {"color": "#577590", "text": "dry"}},      "type": "value"},
+            {"options": {"fan_only": {"color": "#f9c74f", "text": "fan only"}}, "type": "value"}
+          ],
+          "thresholds": {"mode": "absolute", "steps": [{"color": "#adb5bd"}]}
+        }
+      },
+      "gridPos": {"h": 9, "w": 8, "x": 16, "y": 24},
+      "id": 302,
+      "options": {
+        "legend": {"displayMode": "list", "placement": "bottom", "showLegend": true},
+        "mergeValues": true,
+        "rowHeight": 0.9,
+        "showValue": "auto",
+        "tooltip": {"mode": "single"}
+      },
+      "pluginVersion": "11.4.0",
+      "targets": [
+        {
+          "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+          "query": "from(bucket: \"ha\")\n  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)\n  |> filter(fn: (r) => r.domain == \"climate\")\n  |> filter(fn: (r) => r._field == \"state\")\n  |> filter(fn: (r) => not (r.entity_id =~ /_[0-9]+$/))\n  |> keep(columns: [\"_time\", \"_value\", \"entity_id\"])\n  |> group(columns: [\"entity_id\"])",
+          "refId": "A"
+        }
+      ],
+      "title": "HVAC mode",
+      "type": "state-timeline"
+    },
+    {
+      "collapsed": false,
+      "gridPos": {"h": 1, "w": 24, "x": 0, "y": 33},
+      "id": 400,
+      "panels": [],
+      "title": "Activity",
+      "type": "row"
+    },
+    {
+      "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+      "description": "Panel event rate, bucketed by event_type. Tracks zone state changes, button presses, alarm activation, AC/battery events, etc. Each event_type has its own color matching the events table.",
+      "fieldConfig": {
+        "defaults": {
+          "color": {"mode": "palette-classic"},
+          "custom": {
+            "drawStyle": "bars",
+            "fillOpacity": 80,
+            "lineWidth": 0,
+            "showPoints": "never",
+            "stacking": {"mode": "normal"}
+          },
+          "unit": "short"
+        },
+        "overrides": [
+          {"matcher": {"id": "byName", "options": "alarm_activated"},     "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#d62828"}}]},
+          {"matcher": {"id": "byName", "options": "alarm_cleared"},       "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#43aa8b"}}]},
+          {"matcher": {"id": "byName", "options": "ac_lost"},             "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#d62828"}}]},
+          {"matcher": {"id": "byName", "options": "ac_restored"},         "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#43aa8b"}}]},
+          {"matcher": {"id": "byName", "options": "battery_low"},         "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#f8961e"}}]},
+          {"matcher": {"id": "byName", "options": "battery_restored"},    "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#43aa8b"}}]},
+          {"matcher": {"id": "byName", "options": "zone_state_changed"},  "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#577590"}}]},
+          {"matcher": {"id": "byName", "options": "unit_state_changed"},  "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#90be6d"}}]},
+          {"matcher": {"id": "byName", "options": "arming_changed"},      "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#f9c74f"}}]},
+          {"matcher": {"id": "byName", "options": "user_macro_button"},   "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#277da1"}}]},
+          {"matcher": {"id": "byName", "options": "phone_line_dead"},     "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#f8961e"}}]},
+          {"matcher": {"id": "byName", "options": "phone_line_restored"}, "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#43aa8b"}}]}
+        ]
+      },
+      "gridPos": {"h": 8, "w": 12, "x": 0, "y": 34},
+      "id": 401,
+      "options": {
+        "legend": {"displayMode": "table", "placement": "right", "showLegend": true, "calcs": ["sum"]},
+        "tooltip": {"mode": "multi", "sort": "desc"}
+      },
+      "pluginVersion": "11.4.0",
+      "targets": [
+        {
+          "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+          "query": "from(bucket: \"ha\")\n  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)\n  |> filter(fn: (r) => r.domain == \"event\")\n  |> filter(fn: (r) => r._field == \"state\")\n  |> group(columns: [\"event_type\"])\n  |> aggregateWindow(every: v.windowPeriod, fn: count, createEmpty: true)",
+          "refId": "A"
+        }
+      ],
+      "title": "Event rate by type",
+      "type": "timeseries"
+    },
+    {
+      "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+      "description": "Top 15 most-toggled units in the selected window — bar length = number of state changes. Reveals which lights/relays get used most.",
+      "fieldConfig": {
+        "defaults": {
+          "color": {"mode": "thresholds"},
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {"color": "#f9c74f", "value": null},
+              {"color": "#f8961e", "value": 5},
+              {"color": "#f3722c", "value": 15},
+              {"color": "#d62828", "value": 30}
+            ]
+          },
+          "min": 0,
+          "unit": "short"
+        }
+      },
+      "gridPos": {"h": 10, "w": 12, "x": 12, "y": 34},
+      "id": 402,
+      "options": {
+        "displayMode": "gradient",
+        "valueMode": "color",
+        "showUnfilled": true,
+        "orientation": "horizontal",
+        "reduceOptions": {"calcs": ["lastNotNull"], "fields": "/^_value$/", "values": true},
+        "minVizHeight": 10,
+        "minVizWidth": 0,
+        "namePlacement": "left"
+      },
+      "pluginVersion": "11.4.0",
+      "targets": [
+        {
+          "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+          "query": "from(bucket: \"ha\")\n  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)\n  |> filter(fn: (r) => r.domain == \"light\")\n  |> filter(fn: (r) => not (r.entity_id =~ /_[0-9]+$/))\n  |> filter(fn: (r) => r._field == \"value\")\n  |> toFloat()\n  |> keep(columns: [\"_value\", \"entity_id\"])\n  |> group(columns: [\"entity_id\"])\n  |> count()\n  |> group()\n  |> sort(columns: [\"_value\"], desc: true)\n  |> limit(n: 15)",
+          "refId": "A"
+        }
+      ],
+      "title": "Top toggled units (24h)",
+      "type": "bargauge"
+    },
+    {
+      "collapsed": false,
+      "gridPos": {"h": 1, "w": 24, "x": 0, "y": 44},
+      "id": 500,
+      "panels": [],
+      "title": "Insights",
+      "type": "row"
+    },
+    {
+      "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+      "description": "Zones currently bypassed. Bypass = the panel ignores this zone for arming/alarm purposes. Empty when nothing is bypassed; rows accrue when a switch is flipped.",
+      "fieldConfig": {
+        "defaults": {
+          "color": {"mode": "thresholds"},
+          "custom": {
+            "align": "auto",
+            "cellOptions": {"type": "auto"},
+            "inspect": false
+          },
+          "thresholds": {"mode": "absolute", "steps": [{"color": "transparent"}]}
+        },
+        "overrides": [
+          {
+            "matcher": {"id": "byName", "options": "entity_id"},
+            "properties": [
+              {"id": "displayName", "value": "zone bypass switch"},
+              {"id": "custom.cellOptions", "value": {"type": "color-text", "wrapText": false}},
+              {"id": "color", "value": {"mode": "fixed", "fixedColor": "#f9c74f"}}
+            ]
+          },
+          {
+            "matcher": {"id": "byName", "options": "_time"},
+            "properties": [
+              {"id": "displayName", "value": "since"},
+              {"id": "custom.width", "value": 175}
+            ]
+          },
+          {
+            "matcher": {"id": "byName", "options": "_value"},
+            "properties": [{"id": "custom.hidden", "value": true}]
+          }
+        ]
+      },
+      "gridPos": {"h": 8, "w": 8, "x": 0, "y": 45},
+      "id": 501,
+      "options": {
+        "cellHeight": "sm",
+        "footer": {"countRows": true, "fields": "", "reducer": ["sum"], "show": true},
+        "showHeader": true,
+        "sortBy": [{"desc": true, "displayName": "since"}]
+      },
+      "pluginVersion": "11.4.0",
+      "targets": [
+        {
+          "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+          "query": "from(bucket: \"ha\")\n  |> range(start: -24h)\n  |> filter(fn: (r) => r.domain == \"switch\")\n  |> filter(fn: (r) => not (r.entity_id =~ /_[0-9]+$/))\n  |> filter(fn: (r) => r._field == \"value\")\n  |> last()\n  |> filter(fn: (r) => r._value > 0.0)\n  |> keep(columns: [\"_time\", \"_value\", \"entity_id\"])\n  |> group()\n  |> sort(columns: [\"_time\"], desc: true)",
+          "refId": "A"
+        }
+      ],
+      "title": "Active zone bypasses",
+      "type": "table"
+    },
+    {
+      "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+      "description": "User-macro button press events from the panel. Each row = one press; button_index identifies which scene/macro fired.",
+      "fieldConfig": {
+        "defaults": {
+          "color": {"mode": "thresholds"},
+          "custom": {
+            "align": "auto",
+            "cellOptions": {"type": "auto"},
+            "inspect": false
+          },
+          "thresholds": {"mode": "absolute", "steps": [{"color": "transparent"}]}
+        },
+        "overrides": [
+          {
+            "matcher": {"id": "byName", "options": "button_index"},
+            "properties": [
+              {"id": "displayName", "value": "button #"},
+              {"id": "custom.cellOptions", "value": {"type": "color-background", "mode": "basic"}},
+              {"id": "color", "value": {"mode": "fixed", "fixedColor": "#277da1"}}
+            ]
+          },
+          {
+            "matcher": {"id": "byName", "options": "_time"},
+            "properties": [
+              {"id": "displayName", "value": "time"},
+              {"id": "custom.width", "value": 175}
+            ]
+          }
+        ]
+      },
+      "gridPos": {"h": 8, "w": 8, "x": 8, "y": 45},
+      "id": 502,
+      "options": {
+        "cellHeight": "sm",
+        "footer": {"countRows": true, "fields": "", "reducer": ["sum"], "show": true},
+        "showHeader": true,
+        "sortBy": [{"desc": true, "displayName": "time"}]
+      },
+      "pluginVersion": "11.4.0",
+      "targets": [
+        {
+          "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+          "query": "from(bucket: \"ha\")\n  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)\n  |> filter(fn: (r) => r.domain == \"event\" and r.event_type == \"user_macro_button\")\n  |> filter(fn: (r) => r._field == \"button_index\")\n  |> keep(columns: [\"_time\", \"_value\"])\n  |> group()\n  |> sort(columns: [\"_time\"], desc: true)\n  |> limit(n: 25)\n  |> rename(columns: {_value: \"button_index\"})",
+          "refId": "A"
+        }
+      ],
+      "title": "Button press log",
+      "type": "table"
+    },
+    {
+      "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+      "description": "Distribution of panel push events by typed kind across the selected window. Matches the colors used in the event rate and events table panels.",
+      "fieldConfig": {
+        "defaults": {
+          "color": {"mode": "palette-classic"},
+          "custom": {
+            "hideFrom": {"legend": false, "tooltip": false, "viz": false}
+          },
+          "mappings": []
+        },
+        "overrides": [
+          {"matcher": {"id": "byName", "options": "alarm_activated"},     "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#d62828"}}]},
+          {"matcher": {"id": "byName", "options": "alarm_cleared"},       "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#43aa8b"}}]},
+          {"matcher": {"id": "byName", "options": "ac_lost"},             "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#d62828"}}]},
+          {"matcher": {"id": "byName", "options": "ac_restored"},         "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#43aa8b"}}]},
+          {"matcher": {"id": "byName", "options": "battery_low"},         "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#f8961e"}}]},
+          {"matcher": {"id": "byName", "options": "battery_restored"},    "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#43aa8b"}}]},
+          {"matcher": {"id": "byName", "options": "zone_state_changed"},  "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#577590"}}]},
+          {"matcher": {"id": "byName", "options": "unit_state_changed"},  "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#90be6d"}}]},
+          {"matcher": {"id": "byName", "options": "arming_changed"},      "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#f9c74f"}}]},
+          {"matcher": {"id": "byName", "options": "user_macro_button"},   "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "#277da1"}}]}
+        ]
+      },
+      "gridPos": {"h": 8, "w": 8, "x": 16, "y": 45},
+      "id": 503,
+      "options": {
+        "displayLabels": ["percent", "name"],
+        "legend": {"displayMode": "table", "placement": "right", "showLegend": true, "values": ["value"]},
+        "pieType": "donut",
+        "reduceOptions": {"calcs": ["sum"], "fields": "", "values": false},
+        "tooltip": {"mode": "single", "sort": "none"}
+      },
+      "pluginVersion": "11.4.0",
+      "targets": [
+        {
+          "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+          "query": "from(bucket: \"ha\")\n  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)\n  |> filter(fn: (r) => r.domain == \"event\" and r._field == \"state\")\n  |> keep(columns: [\"_time\", \"_value\", \"event_type\"])\n  |> group(columns: [\"event_type\"])\n  |> count(column: \"_value\")\n  |> map(fn: (r) => ({_time: now(), _value: r._value, event_type: r.event_type}))\n  |> pivot(rowKey: [\"_time\"], columnKey: [\"event_type\"], valueColumn: \"_value\")",
+          "refId": "A"
+        }
+      ],
+      "title": "Event distribution",
+      "type": "piechart"
+    }
+  ],
+  "refresh": "30s",
+  "schemaVersion": 39,
+  "tags": ["omni-pca", "hai", "omni-pro-ii", "home-assistant"],
+  "templating": {
+    "list": [
+      {
+        "current": {"selected": true, "text": "All", "value": "$__all"},
+        "datasource": {"type": "influxdb", "uid": "InfluxDB"},
+        "definition": "from(bucket: \"ha\") |> range(start: -7d) |> filter(fn: (r) => r.domain == \"event\" and r._field == \"state\") |> keep(columns: [\"event_type\"]) |> group() |> distinct(column: \"event_type\")",
+        "hide": 0,
+        "includeAll": true,
+        "label": "Event type",
+        "multi": true,
+        "name": "event_type",
+        "options": [],
+        "query": "from(bucket: \"ha\") |> range(start: -7d) |> filter(fn: (r) => r.domain == \"event\" and r._field == \"state\") |> keep(columns: [\"event_type\"]) |> group() |> distinct(column: \"event_type\")",
+        "refresh": 2,
+        "regex": "",
+        "skipUrlSync": false,
+        "sort": 1,
+        "type": "query"
+      }
+    ]
+  },
+  "time": {"from": "now-24h", "to": "now"},
+  "timepicker": {
+    "refresh_intervals": ["5s", "10s", "30s", "1m", "5m", "15m", "30m", "1h"],
+    "time_options": ["1h", "6h", "24h", "2d", "7d", "30d"]
+  },
+  "timezone": "browser",
+  "title": "Omni Pro II — Panel Overview",
+  "uid": "omni-pro-ii-overview",
+  "version": 1,
+  "weekStart": ""
+}

grafana/provisioning/datasources/influxdb.yml

@@ -0,0 +1,21 @@
+# Auto-wires the InfluxDB v2 datasource at Grafana boot. Picks up
+# INFLUX_URL and INFLUX_TOKEN from the grafana container's environment
+# (set in docker-compose.yml from .env). No manual datasource config
+# needed.
+
+apiVersion: 1
+
+datasources:
+  - name: InfluxDB
+    type: influxdb
+    access: proxy
+    url: ${INFLUX_URL}
+    isDefault: true
+    editable: false
+    jsonData:
+      version: Flux
+      organization: omni-pca
+      defaultBucket: ha
+      tlsSkipVerify: true
+    secureJsonData:
+      token: ${INFLUX_TOKEN}

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "omni-pca"
-version = "2026.5.10"
+version = "2026.5.16"
 description = "Async Python client for HAI/Leviton Omni-Link II home automation panels (Omni Pro II, Omni IIe, Omni LTe, Lumina)."
 readme = "README.md"
 license = { text = "MIT" }
@@ -24,12 +24,20 @@ dependencies = [
 
 [project.optional-dependencies]
 cli = ["rich>=13.9.0", "typer>=0.15.0"]
+# astral provides sunrise/sunset computation for the program engine's
+# AT_SUNRISE / AT_SUNSET TIMED-program sentinels. Pure Python, MIT.
+# Pinned to 2.2 for compatibility with Home Assistant (which pins it
+# to exactly that version) so the `ha` group still resolves.
+engine = ["astral>=2.2,<3"]
 
 [project.scripts]
 omni-pca = "omni_pca.__main__:main"
 
 [project.urls]
-Repository = "https://git.supported.systems/warehack.ing/omni-pca"
+Repository = "https://github.com/rsp2k/omni-pca"
+Issues = "https://github.com/rsp2k/omni-pca/issues"
+Changelog = "https://github.com/rsp2k/omni-pca/blob/main/CHANGELOG.md"
+Documentation = "https://hai-omni-pro-ii.warehack.ing/"
 
 [build-system]
 requires = ["uv_build>=0.11.8,<0.12.0"]

src/omni_pca/__init__.py

@@ -2,9 +2,34 @@
 
 from importlib.metadata import PackageNotFoundError, version
 
+from .programs import (
+    Condition,
+    ConditionFamily,
+    Days,
+    MiscConditional,
+    Program,
+    ProgramCond,
+    ProgramType,
+    TimeKind,
+    decode_program_table,
+    iter_defined,
+)
+
 try:
     __version__ = version("omni-pca")
 except PackageNotFoundError:
     __version__ = "0.0.0+unknown"
 
-__all__ = ["__version__"]
+__all__ = [
+    "Condition",
+    "ConditionFamily",
+    "Days",
+    "MiscConditional",
+    "Program",
+    "ProgramCond",
+    "ProgramType",
+    "TimeKind",
+    "__version__",
+    "decode_program_table",
+    "iter_defined",
+]

src/omni_pca/client.py

@@ -20,7 +20,7 @@ import struct
 from collections.abc import AsyncIterator, Awaitable, Callable, Sequence
 from enum import IntEnum
 from types import TracebackType
-from typing import TYPE_CHECKING, Self
+from typing import TYPE_CHECKING, Literal, Self
 
 from .commands import Command, CommandFailedError, SecurityCommandResponse
 
@@ -120,12 +120,20 @@ class OmniClient:
         *,
         controller_key: bytes,
         timeout: float = 5.0,
+        transport: Literal["tcp", "udp"] = "tcp",
+        udp_retry_count: int = 3,
     ) -> None:
+        """``transport='udp'`` if your panel is configured for the
+        ``Network_UDP`` connection type (some firmware versions and the
+        default for many installs). ``udp_retry_count`` is ignored on TCP.
+        """
         self._conn = OmniConnection(
             host=host,
             port=port,
             controller_key=controller_key,
             timeout=timeout,
+            transport=transport,
+            udp_retry_count=udp_retry_count,
         )
         self._subscriber_task: asyncio.Task[None] | None = None
 
@@ -599,6 +607,92 @@ class OmniClient:
         """
         await self.execute_command(Command.CLEAR_MESSAGE, parameter2=index)
 
+    # ---- program enumeration --------------------------------------------
+
+    async def iter_programs(self) -> AsyncIterator["Program"]:
+        """Stream every defined program from the panel.
+
+        v2 has no bulk "send all programs" opcode; instead the panel
+        exposes an iterator semantic via ``UploadProgram`` with
+        ``request_reason=1`` ("next defined after this slot"). We seed
+        with slot 0 and follow each reply's ``ProgramNumber`` back into
+        the next request until the panel sends EOD.
+
+        Mirrors the C# ReadConfig loop at ``clsHAC.OL2ReadConfigProcessProgramData``
+        (clsHAC.cs:5323-5332) and the seed call at clsHAC.cs:4985.
+
+        Yields decoded :class:`omni_pca.programs.Program` instances, one
+        per defined slot in ascending slot order. Empty slots are
+        skipped by the panel — the iterator only sees defined programs.
+        """
+        from .programs import Program  # local import: avoids cycle in __init__
+        slot = 0
+        while True:
+            payload = bytes([(slot >> 8) & 0xFF, slot & 0xFF, 1])
+            reply = await self._conn.request(
+                OmniLink2MessageType.UploadProgram, payload
+            )
+            if reply.opcode == int(OmniLink2MessageType.EOD):
+                return
+            if reply.opcode != int(OmniLink2MessageType.ProgramData):
+                raise OmniConnectionError(
+                    f"unexpected opcode {reply.opcode} during UploadProgram iteration "
+                    f"(expected {int(OmniLink2MessageType.ProgramData)})"
+                )
+            if len(reply.payload) < 2 + 14:
+                raise OmniConnectionError(
+                    f"ProgramData payload too short ({len(reply.payload)} bytes)"
+                )
+            slot = (reply.payload[0] << 8) | reply.payload[1]
+            yield Program.from_wire_bytes(reply.payload[2 : 2 + 14], slot=slot)
+
+    async def download_program(self, slot: int, program: "Program") -> None:
+        """Write ``program`` into the panel at the given 1-based ``slot``.
+
+        Wire opcode: 8 (DownloadProgram) per clsOLMsg2DownloadProgram
+        (clsHAC.cs:1133-1140). Payload is the same 2-byte BE slot
+        number + 14-byte wire body the UploadProgram reply uses, so
+        ``Program.encode_wire_bytes`` produces the right thing.
+
+        The panel responds with ``Ack`` on success; we raise
+        :class:`CommandFailedError` on ``Nak`` and
+        :class:`OmniConnectionError` for any other opcode.
+
+        Writing an all-zero body clears the slot (treats the slot as
+        ``ProgramType.FREE``) — matches the panel's behaviour for an
+        empty record.
+        """
+        if not 1 <= slot <= 1500:
+            raise ValueError(f"program slot {slot} out of range 1..1500")
+        body = program.encode_wire_bytes()
+        if len(body) != 14:
+            raise ValueError(
+                f"encoded program body must be 14 bytes, got {len(body)}"
+            )
+        payload = bytes([(slot >> 8) & 0xFF, slot & 0xFF]) + body
+        reply = await self._conn.request(
+            OmniLink2MessageType.DownloadProgram, payload
+        )
+        if reply.opcode == int(OmniLink2MessageType.Nak):
+            raise CommandFailedError(
+                f"panel NAK'd DownloadProgram for slot {slot}"
+            )
+        if reply.opcode != int(OmniLink2MessageType.Ack):
+            raise OmniConnectionError(
+                f"unexpected opcode {reply.opcode} after DownloadProgram "
+                f"(expected {int(OmniLink2MessageType.Ack)})"
+            )
+
+    async def clear_program(self, slot: int) -> None:
+        """Convenience: clear a program slot by writing an all-zero body.
+
+        On the panel this marks the slot as :class:`ProgramType.FREE`,
+        same as ``DownloadProgram(slot, all-zero)``.
+        """
+        from .programs import Program, ProgramType
+        empty = Program(slot=slot, prog_type=int(ProgramType.FREE))
+        await self.download_program(slot, empty)
+
     # ---- helpers (status) -----------------------------------------------
 
     async def _fetch_status_range(
@@ -683,10 +777,22 @@ class OmniClient:
         )
 
     async def list_area_names(self) -> dict[int, str]:
-        return await self._walk_named_objects(
+        """Return area names, falling back to "Area N" when none are named.
+
+        Most installs assign no user-visible name to areas — single-area
+        homes don't bother, and even multi-area installs commonly leave
+        area names blank. HA needs *something* to label each area entity,
+        so we synthesize "Area 1".."Area 8" (the Omni Pro II cap) when
+        the Properties walk returns no names. Mirrors the v1 adapter's
+        list_area_names fallback in omni_pca.v1.adapter.
+        """
+        named = await self._walk_named_objects(
             ObjectType.AREA,
             lambda r: (r.index, r.name) if isinstance(r, AreaProperties) else None,
         )
+        if named:
+            return named
+        return {i: f"Area {i}" for i in range(1, 9)}
 
     async def subscribe(
         self, callback: Callable[[Message], Awaitable[None]]

src/omni_pca/commands.py

@@ -39,6 +39,19 @@ The reply (ExecuteSecurityCommandResponse, opcode 75) carries a single
 status byte at ``payload[0]`` whose values are listed in
 ``enuSecurityCommnadResponse.cs`` — :class:`SecurityCommandResponse`
 mirrors that enum.
+
+Cross-references (HAI OmniPro II Owner's Manual):
+    Chapter "CONTROL" (pca-re/docs/owner_manual/05_CONTROL/) documents
+        the user-facing keypad keys that map to these commands —
+        e.g. UNIT_ON/OFF + UNIT_LEVEL are what a homeowner triggers via
+        the "Control → 1 (Unit)" menu, SHOW_MESSAGE_WITH_BEEP is
+        invoked from "Control → Message → Show".
+    Chapter "Scene Commands" (06_Scene_Commands/) covers
+        COMPOSE_SCENE and the per-room scene-recall path.
+    Chapter "SECURITY SYSTEM OPERATION" (03_SECURITY_SYSTEM_OPERATION/)
+        documents what each SecurityMode byte (0-6) means at the user
+        level — the arming menu, entry/exit-delay semantics, and which
+        zones each mode arms.
 """
 
 from __future__ import annotations

src/omni_pca/connection.py

@@ -26,6 +26,7 @@ import logging
 from collections.abc import AsyncIterator
 from enum import IntEnum
 from types import TracebackType
+from typing import Literal
 
 from .crypto import (
     BLOCK_SIZE,
@@ -104,18 +105,30 @@ class OmniConnection:
         port: int = _DEFAULT_PORT,
         controller_key: bytes = b"",
         timeout: float = 5.0,
+        transport: Literal["tcp", "udp"] = "tcp",
+        udp_retry_count: int = 3,
     ) -> None:
         if len(controller_key) != 16:
             raise ValueError(
                 f"controller_key must be 16 bytes, got {len(controller_key)}"
             )
+        if transport not in ("tcp", "udp"):
+            raise ValueError(f"transport must be 'tcp' or 'udp', got {transport!r}")
         self._host = host
         self._port = port
         self._controller_key = bytes(controller_key)
         self._default_timeout = timeout
+        self._transport_kind: Literal["tcp", "udp"] = transport
+        self._udp_retry_count = max(0, udp_retry_count)
 
+        # TCP transport state
         self._reader: asyncio.StreamReader | None = None
         self._writer: asyncio.StreamWriter | None = None
+
+        # UDP transport state (asyncio.DatagramTransport + our protocol)
+        self._udp_transport: asyncio.DatagramTransport | None = None
+        self._udp_protocol: _OmniDatagramProtocol | None = None
+
         self._state = ConnectionState.DISCONNECTED
 
         self._session_id: bytes | None = None
@@ -167,22 +180,41 @@ class OmniConnection:
         await self.close()
 
     async def connect(self) -> None:
-        """Open the TCP socket and run the 4-step secure-session handshake."""
+        """Open the socket and run the 4-step secure-session handshake.
+
+        Transport is set by the ``transport=`` constructor arg. TCP opens
+        a stream socket; UDP opens a datagram endpoint. Either way, the
+        handshake (and everything else) speaks the same Packet/Message
+        format and crypto.
+        """
         if self._state is not ConnectionState.DISCONNECTED:
             raise ConnectionError(f"already connecting/connected (state={self._state})")
         self._state = ConnectionState.CONNECTING
         try:
+            if self._transport_kind == "tcp":
                 self._reader, self._writer = await asyncio.wait_for(
                     asyncio.open_connection(self._host, self._port),
                     timeout=self._default_timeout,
                 )
-        except (TimeoutError, OSError) as exc:
-            self._state = ConnectionState.DISCONNECTED
-            raise ConnectionError(f"failed to open TCP socket: {exc}") from exc
-
                 self._reader_task = asyncio.create_task(
                     self._read_loop(), name=f"omni-conn-reader-{self._host}"
                 )
+            else:
+                # UDP: connectionless. We "connect" the datagram socket to
+                # the panel so we can reject stray datagrams from elsewhere
+                # and use plain `transport.sendto(data)`.
+                loop = asyncio.get_running_loop()
+                self._udp_transport, self._udp_protocol = (
+                    await loop.create_datagram_endpoint(
+                        lambda: _OmniDatagramProtocol(self),
+                        remote_addr=(self._host, self._port),
+                    )
+                )
+        except (TimeoutError, OSError) as exc:
+            self._state = ConnectionState.DISCONNECTED
+            raise ConnectionError(
+                f"failed to open {self._transport_kind.upper()} socket: {exc}"
+            ) from exc
 
         try:
             await self._do_handshake()
@@ -195,8 +227,36 @@ class OmniConnection:
         if self._closed:
             return
         self._closed = True
+        previous_state = self._state
         self._state = ConnectionState.DISCONNECTED
 
+        # Politely tell the controller we're done — Omni is single-client,
+        # and on UDP it has no other way to know we've gone (TCP gets a
+        # FIN; UDP just sees datagrams stop). Without this, the panel
+        # holds the session slot until its idle timeout and rejects new
+        # connections from us with ControllerCannotStartNewSession.
+        if previous_state in (
+            ConnectionState.NEW_SESSION,
+            ConnectionState.SECURE,
+            ConnectionState.ONLINE,
+        ):
+            try:
+                term_seq = self._claim_seq()
+                term = Packet(
+                    seq=term_seq,
+                    type=PacketType.ClientSessionTerminated,
+                    data=b"",
+                )
+                self._write_packet(term)
+                # Best-effort flush so the byte hits the wire before we
+                # tear down the socket. UDP is fire-and-forget; TCP needs
+                # a tick for the writer to drain.
+                if self._writer is not None:
+                    with contextlib.suppress(Exception):
+                        await self._writer.drain()
+            except Exception as exc:  # noqa: BLE001 - close() must be idempotent
+                _log.debug("close: failed to send ClientSessionTerminated: %s", exc)
+
         # Cancel anyone still waiting for a reply.
         for fut in self._pending.values():
             if not fut.done():
@@ -212,6 +272,12 @@ class OmniConnection:
             self._writer = None
         self._reader = None
 
+        if self._udp_transport is not None:
+            with contextlib.suppress(OSError):
+                self._udp_transport.close()
+            self._udp_transport = None
+            self._udp_protocol = None
+
         if self._reader_task is not None and not self._reader_task.done():
             self._reader_task.cancel()
             with contextlib.suppress(asyncio.CancelledError, Exception):
@@ -238,17 +304,39 @@ class OmniConnection:
                 f"cannot send request, connection state={self._state.name}"
             )
         message = encode_v2(opcode, payload)
+        per_attempt_timeout = timeout if timeout is not None else self._default_timeout
+        # UDP needs explicit retries since datagram delivery is best-effort.
+        # TCP gets reliable delivery for free; we still keep retry_count for
+        # API uniformity but it defaults to 0 effectively.
+        max_attempts = (
+            1 + self._udp_retry_count if self._transport_kind == "udp" else 1
+        )
+        last_exc: Exception | None = None
+        for attempt in range(1, max_attempts + 1):
             seq, fut = self._send_encrypted(message)
             try:
-            reply_packet = await asyncio.wait_for(
-                fut, timeout if timeout is not None else self._default_timeout
-            )
+                reply_packet = await asyncio.wait_for(fut, per_attempt_timeout)
             except TimeoutError as exc:
+                last_exc = exc
                 self._pending.pop(seq, None)
+                if attempt < max_attempts:
+                    _log.debug(
+                        "udp retry %d/%d on opcode=%d seq=%d",
+                        attempt,
+                        max_attempts,
+                        int(opcode),
+                        seq,
+                    )
+                    continue
                 raise RequestTimeoutError(
-                f"no reply for opcode={int(opcode)} seq={seq}"
-            ) from exc
+                    f"no reply for opcode={int(opcode)} "
+                    f"after {max_attempts} attempt(s)"
+                ) from last_exc
             return self._decode_inner(reply_packet)
+        # Loop exit without return only via re-raised timeout above.
+        raise RequestTimeoutError(
+            f"request loop exited without reply for opcode={int(opcode)}"
+        )
 
     def unsolicited(self) -> AsyncIterator[Message]:
         """Async iterator over unsolicited inbound messages (seq=0)."""
@@ -380,17 +468,23 @@ class OmniConnection:
         return seq, fut
 
     def _write_packet(self, pkt: Packet, *, encrypted: bool = False) -> None:
-        if self._writer is None:
-            raise ConnectionError("transport not open")
         wire = pkt.encode()
         _log.debug(
-            "TX seq=%d type=%s len=%d encrypted=%s",
+            "TX[%s] seq=%d type=%s len=%d encrypted=%s",
+            self._transport_kind,
             pkt.seq,
             pkt.type.name,
             len(pkt.data),
             encrypted,
         )
+        if self._transport_kind == "tcp":
+            if self._writer is None:
+                raise ConnectionError("transport not open")
             self._writer.write(wire)
+        else:
+            if self._udp_transport is None:
+                raise ConnectionError("transport not open")
+            self._udp_transport.sendto(wire)
 
     def _decode_inner(self, pkt: Packet) -> Message:
         """Decrypt + parse the inner ``Message`` from an OmniLink2Message packet."""
@@ -596,3 +690,46 @@ class OmniConnection:
             return
         if not fut.done():
             fut.set_result(pkt)
+
+
+# --------------------------------------------------------------------------
+# UDP transport
+# --------------------------------------------------------------------------
+
+
+class _OmniDatagramProtocol(asyncio.DatagramProtocol):
+    """asyncio.DatagramProtocol bound to a single OmniConnection.
+
+    Each datagram received on a UDP Omni socket *is* one complete Packet
+    (no stream framing — that is the whole reason UDP is useful here).
+    We just decode it and hand it to the connection's dispatcher.
+    """
+
+    def __init__(self, conn: OmniConnection) -> None:
+        self._conn = conn
+
+    def connection_made(self, transport: asyncio.BaseTransport) -> None:
+        # transport is a DatagramTransport in this codepath.
+        pass
+
+    def datagram_received(self, data: bytes, addr: tuple[str, int]) -> None:
+        # Each datagram is a complete Packet — no stream framing.
+        # The TCP _dispatch already handles handshake routing, solicited
+        # replies, and unsolicited push, so we just delegate.
+        try:
+            pkt = Packet.decode(data)
+        except Exception as exc:
+            _log.warning("dropping malformed UDP datagram: %s", exc)
+            return
+        try:
+            self._conn._dispatch(pkt)
+        except Exception:
+            _log.exception("UDP dispatch crashed for seq=%d", pkt.seq)
+
+    def error_received(self, exc: Exception) -> None:
+        _log.warning("UDP socket error: %s", exc)
+
+    def connection_lost(self, exc: Exception | None) -> None:
+        if exc is not None:
+            _log.warning("UDP transport lost: %s", exc)
+

src/omni_pca/events.py

@@ -29,6 +29,16 @@ References (decompiled C# source):
                                        — bit-mask classifier we mirror below
     clsText.cs:1693-1911 (GetEventText)
                                        — per-category sub-field extraction
+
+Cross-references (HAI OmniPro II Installation Manual):
+    APPENDIX A — CONTACT ID REPORTING FORMAT (p68): the Contact ID
+        event codes the panel transmits to a central monitoring station
+        for each :class:`AlarmKind`. The class names below mirror those
+        codes one-for-one. (pca-re/docs/manuals/installation_manual/
+        10_APPENDIX_A_CONTACT_ID_REPORTING_FORMAT/)
+    APPENDIX B — DIGITAL COMMUNICATOR CODE SHEET (p69-73): the 4/2 and
+        3/1 reporting-format code tables. Useful when correlating a
+        SystemEvents word with what a central station would see. (12_…)
 """
 
 from __future__ import annotations
@@ -127,17 +137,22 @@ class UpbLinkAction(IntEnum):
 # --------------------------------------------------------------------------
 
 
-def _ensure_system_events(message: Message) -> bytes:
-    """Validate that ``message`` is a v2 SystemEvents reply, return its
-    payload bytes (everything after the opcode).
+def _ensure_system_events(
+    message: Message,
+    expected_opcode: int = int(OmniLink2MessageType.SystemEvents),
+) -> bytes:
+    """Validate that ``message`` is a SystemEvents reply, return payload bytes.
 
-    Reference: clsOLMsgSystemEvents.cs (entire file) — the message body
-    is just ``[opcode][word1_hi][word1_lo][word2_hi][word2_lo]…``.
+    The v1 and v2 SystemEvents inner-message bodies are byte-identical
+    (clsOLMsgSystemEvents.cs vs clsOL2MsgSystemEvents.cs both yield
+    ``[opcode][word1_hi][word1_lo][word2_hi][word2_lo]…``); only the
+    opcode byte differs (35 vs 55). Pass ``expected_opcode`` to dispatch
+    the v1 path from :class:`omni_pca.v1.adapter.OmniClientV1Adapter`.
     """
-    if message.opcode != int(OmniLink2MessageType.SystemEvents):
+    if message.opcode != expected_opcode:
         raise ValueError(
-            "not a SystemEvents message: opcode "
-            f"{message.opcode} (expected {int(OmniLink2MessageType.SystemEvents)})"
+            f"not a SystemEvents message: opcode {message.opcode} "
+            f"(expected {expected_opcode})"
         )
     payload = message.payload
     if len(payload) % 2 != 0:
@@ -700,18 +715,23 @@ def _classify(word: int) -> SystemEvent:
 # --------------------------------------------------------------------------
 
 
-def parse_events(message: Message) -> list[SystemEvent]:
-    """Decode a v2 ``SystemEvents`` (opcode 55) message into typed events.
+def parse_events(
+    message: Message,
+    expected_opcode: int = int(OmniLink2MessageType.SystemEvents),
+) -> list[SystemEvent]:
+    """Decode a ``SystemEvents`` message into typed events.
 
     The panel batches multiple state changes into a single message, so
     the return type is always a list — even for messages that carry just
     one event. Empty SystemEvents messages return an empty list rather
     than raising.
 
-    Reference: clsOLMsgSystemEvents.cs:10-18 (SystemEventsCount + per-
-    word accessor).
+    ``expected_opcode`` defaults to v2 (55); pass v1's value (35) when
+    decoding from a ``v1.OmniConnectionV1`` push stream.
+
+    Reference: clsOLMsgSystemEvents.cs / clsOL2MsgSystemEvents.cs.
     """
-    payload = _ensure_system_events(message)
+    payload = _ensure_system_events(message, expected_opcode)
     return [_classify(w) for w in _iter_event_words(payload)]
 
 
@@ -790,6 +810,7 @@ class EventStream:
     """
 
     source: object  # OmniConnection or duck-typed equivalent
+    expected_opcode: int = int(OmniLink2MessageType.SystemEvents)
     _buffer: list[SystemEvent] = field(default_factory=list)
 
     def __post_init__(self) -> None:
@@ -817,10 +838,10 @@ class EventStream:
                 raise
             except asyncio.CancelledError:
                 raise
-            if msg.opcode != int(OmniLink2MessageType.SystemEvents):
+            if msg.opcode != self.expected_opcode:
                 # Non-event message (Status, Ack, …) — silently ignore.
                 continue
-            self._buffer = parse_events(msg)
+            self._buffer = parse_events(msg, self.expected_opcode)
         return self._buffer.pop(0)
 
 

src/omni_pca/message.py

@@ -3,7 +3,7 @@
 Wire layout (non-addressable):
     ``[start_char][length][...data...][crc_lo][crc_hi]``
 
-For v1 addressable messages (StartChar=0x5A) a single SerialAddress byte
+For v1 addressable messages (StartChar=0x41) a single SerialAddress byte
 is interleaved between start_char and length.
 
 CRC is CRC-16/MODBUS (poly 0xA001, init 0, reflected) computed over the
@@ -13,6 +13,8 @@ on the wire (CRC1 = low byte, CRC2 = high byte).
 References:
     clsOmniLinkMessage.cs (lines 9, 164-186, 273-289) — frame + CRC
     clsOmniLink2Message.cs (lines 17-23) — v2 StartChar = 0x21
+    enuOmniLinkMessageFormat.cs — Addressable=0x41, NonAddressable=0x5A,
+                                   OmniLink2=0x21
     clsOL2MsgLogin.cs / clsOLMsgLogin.cs — example payloads
 """
 
@@ -23,8 +25,8 @@ from dataclasses import dataclass, field
 from .opcodes import OmniLink2MessageType, OmniLinkMessageType
 
 START_CHAR_V2 = 0x21
-START_CHAR_V1_UNADDRESSED = 0x41
-START_CHAR_V1_ADDRESSABLE = 0x5A
+START_CHAR_V1_ADDRESSABLE = 0x41
+START_CHAR_V1_UNADDRESSED = 0x5A
 
 _CRC_POLY_REFLECTED = 0xA001
 

src/omni_pca/models.py

@@ -490,18 +490,25 @@ class ObjectType(IntEnum):
 class SecurityMode(IntEnum):
     """Area security mode (enuSecurityMode.cs).
 
-    Values 9..14 are the "arming in progress" variants the panel reports
-    while a delayed-arm timer is running.
+    The first 7 values are what the user actually picks at the keypad
+    when arming. Values 9..14 are the "arming in progress" variants the
+    panel reports while a delayed-arm timer is running.
+
+    Reference: HAI OmniPro II Owner's Manual, *Security System
+    Operation* chapter (pca-re/docs/owner_manual/
+    03_SECURITY_SYSTEM_OPERATION/) — the user-facing semantics of each
+    mode (entry/exit delays, which zones are armed, when to use which)
+    come from there.
     """
 
-    OFF = 0
-    DAY = 1
-    NIGHT = 2
-    AWAY = 3
-    VACATION = 4
-    DAY_INSTANT = 5
-    NIGHT_DELAYED = 6
-    ANY_CHANGE = 7
+    OFF = 0            # disarmed; resets fire / emergency alarms, silences sirens
+    DAY = 1            # perimeter armed, interior motion NOT armed, entry delay
+    NIGHT = 2          # perimeter + non-sleeping-area motion armed, NO entry delay
+    AWAY = 3           # everything armed, both exit + entry delays
+    VACATION = 4       # same as AWAY but for multi-day absences
+    DAY_INSTANT = 5    # DAY with no entry delay (instant alarm on perimeter)
+    NIGHT_DELAYED = 6  # NIGHT with entry delay on entry-exit zones
+    ANY_CHANGE = 7     # programming-condition wildcard, NOT a real arming state
     ARMING_DAY = 9
     ARMING_NIGHT = 10
     ARMING_AWAY = 11
@@ -511,7 +518,13 @@ class SecurityMode(IntEnum):
 
 
 class HvacMode(IntEnum):
-    """Thermostat system mode (enuThermostatMode.cs)."""
+    """Thermostat system mode (enuThermostatMode.cs).
+
+    Values 0-3 match the keypad's "Thermostat → MODE" menu one-for-one
+    (Owner's Manual *Scene Commands → Thermostat Control* chapter,
+    pca-re/docs/owner_manual/06_Scene_Commands/). ``EMERGENCY_HEAT`` (4)
+    is heat-pump-only and not exposed in the standard keypad menu.
+    """
 
     OFF = 0
     HEAT = 1
@@ -521,7 +534,12 @@ class HvacMode(IntEnum):
 
 
 class FanMode(IntEnum):
-    """Thermostat fan mode (enuThermostatFanMode.cs)."""
+    """Thermostat fan mode (enuThermostatFanMode.cs).
+
+    Values 0-1 match the keypad's "Thermostat → FAN" menu (Owner's
+    Manual *Scene Commands*, 06_Scene_Commands/). ``CYCLE`` (2) is
+    programmable-only and not surfaced at the keypad.
+    """
 
     AUTO = 0
     ON = 1
@@ -531,8 +549,12 @@ class FanMode(IntEnum):
 class HoldMode(IntEnum):
     """Thermostat hold mode (enuThermostatHoldMode.cs).
 
-    Value 255 (``OLD_ON``) is a legacy "Hold" sentinel from older firmware
-    that some panels still emit; treat it as equivalent to ``HOLD``.
+    ``OFF`` / ``HOLD`` are the two states surfaced at the keypad's
+    "Thermostat → HOLD" menu (Owner's Manual *Scene Commands*,
+    06_Scene_Commands/). ``VACATION`` (2) is a programmable mode the
+    panel uses while a Vacation security mode is active. Value 255
+    (``OLD_ON``) is a legacy "Hold" sentinel from older firmware that
+    some panels still emit; treat it as equivalent to ``HOLD``.
     """
 
     OFF = 0
@@ -560,6 +582,13 @@ class ZoneType(IntEnum):
     the temperature/humidity sensors and a handful of utility types. Any
     raw byte value still round-trips through ``ZoneStatus.zone_type`` —
     it just won't have a named enum member.
+
+    Reference: HAI OmniPro II Installation Manual, *Installer Setup →
+    SETUP ZONES → ZONE TYPES* table (pca-re/docs/manuals/
+    installation_manual/04_INSTALLER_SETUP/INSTALLER_SETUP.md, p38-39).
+    The byte values and short names here match the installer-setup
+    keypad selections one-for-one (e.g. ``PERIMETER = 1`` is the same
+    "PERIMETER" the installer scrolls to when setting Z1..Z176 types).
     """
 
     ENTRY_EXIT = 0
@@ -657,7 +686,9 @@ class ZoneStatus:
         bytes[2]     status byte (current+latched+arming, see below)
         bytes[3]     analog loop reading (0-255)
 
-    Status byte bit layout (clsZone.cs:385, clsText.cs:3110):
+    Status byte bit layout (clsZone.cs:385, clsText.cs:3110, and the
+    "View Zone Status" keypad screen in the Owner's Manual *CONTROL*
+    chapter, pca-re/docs/owner_manual/05_CONTROL/):
         bits 0-1 (mask 0x03): current condition
             0=Secure, 1=NotReady, 2=Trouble, 3=Tamper
         bits 2-3 (mask 0x0C): latched alarm status
@@ -752,7 +783,11 @@ class UnitStatus:
         bytes[3..4]  remaining time in seconds (BE u16, 0 = indefinite)
         bytes[5..6]  optional ZigBee instantaneous power (W, BE u16)
 
-    State byte semantics (clsUnit.cs:405-533):
+    State byte semantics (clsUnit.cs:405-533; user-visible meaning in
+    the Owner's Manual *CONTROL → Light/Appliance Control* chapter,
+    pca-re/docs/owner_manual/05_CONTROL/, which documents the keypad
+    "All On" / "All Off" / "Scene" / "Bright/Dim" actions that put a
+    unit into each of these states):
         0           Off
         1           On
         2..13       Scene A..L (state - 63 → 'A'..'L' as ASCII char)

src/omni_pca/program_renderer.py

@@ -0,0 +1,884 @@
+"""Structured-English rendering of HAI Omni panel programs.
+
+The decoded :class:`omni_pca.programs.Program` records produced by
+``pca_file`` and the wire upload paths carry every byte but no narrative.
+This module turns them into readable sentences modelled on PC Access's
+program editor:
+
+    WHEN Front Door is opened
+      AND IF Living Room Motion is secure
+      AND IF after sunset
+        OR IF Bedtime Mode is active
+    THEN Turn ON Hallway Light
+     AND Show Message "WELCOME HOME"
+
+Output is a sequence of :class:`Token` records rather than a flat string
+so that consumers (CLI, HA frontend, anything else) can:
+
+* Identify object references (zones / units / areas / thermostats /
+  buttons / messages) — render each as a clickable link to the entity
+  page, badge them with live state, etc.
+* Style keywords (`WHEN`, `AND IF`, `THEN`) separately from object
+  names and values.
+* Recover plain text trivially via ``"".join(t.text for t in tokens)``.
+
+A :class:`ProgramRenderer` is constructed with a :class:`NameResolver`
+and an optional :class:`StateResolver` for the live-state overlay. The
+two resolvers are protocols (any object with the right methods works);
+the convenience :class:`AccountNameResolver` adapts a :class:`PcaAccount`
+and :class:`MockStateResolver` adapts a :class:`MockState` — together
+those cover the two common consumers (offline ``.pca`` snapshot vs.
+running mock panel) without forcing either into a base class.
+"""
+
+from __future__ import annotations
+
+from dataclasses import dataclass, field
+from typing import Iterable, Protocol, runtime_checkable
+
+from .commands import Command
+from .programs import (
+    CondArgType,
+    CondOP,
+    Days,
+    MiscConditional,
+    Program,
+    ProgramCond,
+    ProgramType,
+    TimeKind,
+)
+from .program_engine import (
+    ClausalChain,
+    EVENT_AC_POWER_OFF,
+    EVENT_AC_POWER_ON,
+    EVENT_PHONE_DEAD,
+    EVENT_PHONE_OFF_HOOK,
+    EVENT_PHONE_ON_HOOK,
+    EVENT_PHONE_RINGING,
+)
+
+
+# --------------------------------------------------------------------------
+# Token stream
+# --------------------------------------------------------------------------
+
+
+class TokenKind:
+    """String constants for :attr:`Token.kind`. Defined as a class of
+    str constants so consumers can do ``if t.kind == TokenKind.REF``."""
+
+    KEYWORD: str = "keyword"     # WHEN, AND IF, THEN, OR IF, etc.
+    OPERATOR: str = "operator"   # is, ==, >, after, before, …
+    REF: str = "ref"             # an object reference (zone / unit / …)
+    VALUE: str = "value"         # a literal value (time, number, mode name)
+    TEXT: str = "text"           # plain prose connectors
+    INDENT: str = "indent"       # leading whitespace for the next line
+    NEWLINE: str = "newline"     # end-of-line
+
+
+@dataclass(frozen=True, slots=True)
+class Token:
+    """One unit of structured-English output.
+
+    ``text`` is what the consumer prints. The other fields are
+    metadata; only ``REF`` tokens use them all.
+
+    For ``REF`` tokens:
+        * ``entity_kind`` is one of ``"zone"`` / ``"unit"`` / ``"area"``
+          / ``"thermostat"`` / ``"button"`` / ``"message"``
+          / ``"code"`` / ``"timeclock"``
+        * ``entity_id`` is the 1-based slot the reference resolves to
+        * ``state`` is the live-state overlay string when a state
+          resolver was provided (e.g. ``"SECURE"``, ``"ON 60%"``,
+          ``"Off"``); ``None`` when no overlay is available
+
+    For non-REF tokens, ``entity_kind`` / ``entity_id`` / ``state`` are ``None``.
+    """
+
+    kind: str
+    text: str
+    entity_kind: str | None = None
+    entity_id: int | None = None
+    state: str | None = None
+
+
+def tokens_to_string(tokens: Iterable[Token]) -> str:
+    """Render a token stream to plain text. Useful for logs / dumps."""
+    pieces: list[str] = []
+    for t in tokens:
+        if t.kind == TokenKind.NEWLINE:
+            pieces.append("\n")
+        elif t.kind == TokenKind.INDENT:
+            pieces.append(t.text)
+        else:
+            pieces.append(t.text)
+            if t.kind == TokenKind.REF and t.state is not None:
+                pieces.append(f" [{t.state}]")
+    return "".join(pieces)
+
+
+# --------------------------------------------------------------------------
+# Resolver protocols + default implementations
+# --------------------------------------------------------------------------
+
+
+@runtime_checkable
+class NameResolver(Protocol):
+    """Translate a (kind, 1-based-index) reference into a human name.
+
+    Returns the name string when known, or ``None`` when the slot is
+    undefined / the kind isn't supported. The renderer falls back to
+    a generated label (``"Zone 5"``, ``"Unit 7"``) when the resolver
+    returns ``None``.
+    """
+
+    def name_of(self, kind: str, index: int) -> str | None: ...
+
+
+@runtime_checkable
+class StateResolver(Protocol):
+    """Translate a (kind, 1-based-index) reference into a live-state
+    overlay string. Returns ``None`` when no overlay applies — the
+    renderer omits the bracketed annotation in that case.
+    """
+
+    def state_of(self, kind: str, index: int) -> str | None: ...
+
+
+class AccountNameResolver:
+    """Resolves names from a :class:`omni_pca.pca_file.PcaAccount`.
+
+    Works as both a static-snapshot view (offline ``.pca`` inspection)
+    and as a fallback for the HA path when only header data is loaded.
+    """
+
+    def __init__(self, account) -> None:
+        self._account = account
+
+    def name_of(self, kind: str, index: int) -> str | None:
+        table = {
+            "zone": getattr(self._account, "zone_names", {}),
+            "unit": getattr(self._account, "unit_names", {}),
+            "area": getattr(self._account, "area_names", {}),
+            "thermostat": getattr(self._account, "thermostat_names", {}),
+            "button": getattr(self._account, "button_names", {}),
+            "message": getattr(self._account, "message_names", {}),
+            "code": getattr(self._account, "code_names", {}),
+        }.get(kind, {})
+        return table.get(index)
+
+
+class MockStateResolver:
+    """Resolves both names and live state from a :class:`MockState`.
+
+    Implements both :class:`NameResolver` and :class:`StateResolver`
+    so the same object covers both roles when rendering against a
+    running mock panel.
+    """
+
+    def __init__(self, state) -> None:
+        self._state = state
+
+    def name_of(self, kind: str, index: int) -> str | None:
+        getter = {
+            "zone": getattr(self._state, "zones", {}).get,
+            "unit": getattr(self._state, "units", {}).get,
+            "area": getattr(self._state, "areas", {}).get,
+            "thermostat": getattr(self._state, "thermostats", {}).get,
+            "button": getattr(self._state, "buttons", {}).get,
+        }.get(kind)
+        if getter is None:
+            return None
+        obj = getter(index)
+        return getattr(obj, "name", None) if obj else None
+
+    def state_of(self, kind: str, index: int) -> str | None:
+        if kind == "zone":
+            z = self._state.zones.get(index)
+            if z is None:
+                return None
+            if z.is_bypassed:
+                return "BYPASSED"
+            return "NOT READY" if z.current_state != 0 else "SECURE"
+        if kind == "unit":
+            u = self._state.units.get(index)
+            if u is None:
+                return None
+            if u.state == 0:
+                return "OFF"
+            if u.state >= 100:
+                return f"ON {u.state - 100}%"
+            return "ON"
+        if kind == "area":
+            a = self._state.areas.get(index)
+            if a is None:
+                return None
+            return _SECURITY_MODE_NAMES.get(a.mode, f"mode {a.mode}")
+        if kind == "thermostat":
+            t = self._state.thermostats.get(index)
+            if t is None or t.temperature_raw == 0:
+                return None
+            # Linear scale on Omni: temp_raw / 2 - 40 = °F.
+            return f"{t.temperature_raw // 2 - 40}°F"
+        return None
+
+
+_SECURITY_MODE_NAMES: dict[int, str] = {
+    0: "Off",
+    1: "Day",
+    2: "Night",
+    3: "Away",
+    4: "Vacation",
+    5: "Day Instant",
+    6: "Night Delayed",
+}
+
+
+# --------------------------------------------------------------------------
+# Helpers — friendly names for fixed enums
+# --------------------------------------------------------------------------
+
+
+_DAY_BIT_LABELS: tuple[tuple[int, str], ...] = (
+    (int(Days.MONDAY), "Mon"),
+    (int(Days.TUESDAY), "Tue"),
+    (int(Days.WEDNESDAY), "Wed"),
+    (int(Days.THURSDAY), "Thu"),
+    (int(Days.FRIDAY), "Fri"),
+    (int(Days.SATURDAY), "Sat"),
+    (int(Days.SUNDAY), "Sun"),
+)
+
+_ALL_DAYS_MASK: int = sum(b for b, _ in _DAY_BIT_LABELS)
+_WEEKDAYS_MASK: int = int(
+    Days.MONDAY | Days.TUESDAY | Days.WEDNESDAY | Days.THURSDAY | Days.FRIDAY
+)
+_WEEKEND_MASK: int = int(Days.SATURDAY | Days.SUNDAY)
+
+
+def format_days(mask: int) -> str:
+    """Render a Days bitmask as a friendly schedule string.
+
+    Common patterns get short names; anything else is the abbreviated
+    weekday list (``"Mon, Wed, Fri"``).
+    """
+    if mask == 0:
+        return "never"
+    if mask & _ALL_DAYS_MASK == _ALL_DAYS_MASK:
+        return "every day"
+    if mask & _ALL_DAYS_MASK == _WEEKDAYS_MASK:
+        return "weekdays"
+    if mask & _ALL_DAYS_MASK == _WEEKEND_MASK:
+        return "weekends"
+    parts = [label for bit, label in _DAY_BIT_LABELS if mask & bit]
+    return ", ".join(parts) if parts else "(no days)"
+
+
+# Command → ("verb", expects_pr2_object_kind) lookup. ``None`` for the
+# second element means "no object reference" — the command's parameters
+# are the action's payload alone.
+_COMMAND_VERBS: dict[int, tuple[str, str | None]] = {
+    int(Command.UNIT_OFF):     ("Turn OFF",       "unit"),
+    int(Command.UNIT_ON):      ("Turn ON",        "unit"),
+    int(Command.ALL_OFF):      ("Turn ALL OFF",   None),
+    int(Command.ALL_ON):       ("Turn ALL ON",    None),
+    int(Command.BYPASS_ZONE):  ("Bypass",         "zone"),
+    int(Command.RESTORE_ZONE): ("Restore",        "zone"),
+    int(Command.RESTORE_ALL_ZONES): ("Restore all zones", None),
+    int(Command.EXECUTE_BUTTON): ("Execute button", "button"),
+    int(Command.UNIT_LEVEL):   ("Set level",      "unit"),
+    int(Command.UNIT_RAMP):    ("Ramp",           "unit"),
+    int(Command.DIM_STEP):     ("Dim",            "unit"),
+    int(Command.BRIGHT_STEP):  ("Brighten",       "unit"),
+    int(Command.SECURITY_OFF): ("Disarm",         "area"),
+    int(Command.SECURITY_DAY): ("Arm Day",        "area"),
+    int(Command.SECURITY_NIGHT): ("Arm Night",    "area"),
+    int(Command.SECURITY_AWAY): ("Arm Away",      "area"),
+    int(Command.SECURITY_VACATION): ("Arm Vacation", "area"),
+    int(Command.SECURITY_DAY_INSTANT): ("Arm Day Instant", "area"),
+    int(Command.SECURITY_NIGHT_DELAYED): ("Arm Night Delayed", "area"),
+}
+
+
+# --------------------------------------------------------------------------
+# The renderer
+# --------------------------------------------------------------------------
+
+
+@dataclass
+class ProgramRenderer:
+    """Render :class:`Program` records and clausal chains as token streams.
+
+    Parameters
+    ----------
+    names:
+        Object-name resolver (zones, units, areas, thermostats, buttons,
+        messages, codes). Pass an :class:`AccountNameResolver` for
+        offline ``.pca`` snapshots or a :class:`MockStateResolver` for
+        the mock-panel case.
+    state:
+        Optional live-state resolver. When provided, every ``REF`` token
+        carries a ``state`` annotation that consumers can render as a
+        badge (``"Front Door [SECURE]"`` etc.).
+    """
+
+    names: NameResolver
+    state: StateResolver | None = None
+
+    # ---- public API ------------------------------------------------------
+
+    def render_program(self, p: Program) -> list[Token]:
+        """Render a single compact-form program (TIMED / EVENT / YEARLY).
+
+        Returns the multi-line full form. For a one-line summary, see
+        :meth:`summarize_program`.
+        """
+        out: list[Token] = []
+        try:
+            kind = ProgramType(p.prog_type)
+        except ValueError:
+            out.append(Token(TokenKind.TEXT, f"Unknown program type {p.prog_type}"))
+            return out
+        if kind == ProgramType.TIMED:
+            self._emit_timed_header(p, out)
+        elif kind == ProgramType.EVENT:
+            self._emit_event_header(p, out)
+        elif kind == ProgramType.YEARLY:
+            self._emit_yearly_header(p, out)
+        elif kind == ProgramType.REMARK:
+            self._emit_remark(p, out)
+            return out
+        elif kind == ProgramType.FREE:
+            out.append(Token(TokenKind.TEXT, "(empty slot)"))
+            return out
+        else:
+            # Multi-record record on its own — caller should use
+            # render_chain instead. Be helpful rather than silent.
+            out.append(Token(
+                TokenKind.TEXT,
+                f"(multi-record {kind.name} — render with render_chain)",
+            ))
+            return out
+        # Compact-form programs can carry up to two inline AND conditions
+        # in their cond / cond2 fields. Skip when both are zero.
+        for slot_idx, field_val in (("cond", p.cond), ("cond2", p.cond2)):
+            if field_val == 0:
+                continue
+            out.append(Token(TokenKind.NEWLINE, ""))
+            out.append(Token(TokenKind.INDENT, "  "))
+            out.append(Token(TokenKind.KEYWORD, "AND IF"))
+            out.append(Token(TokenKind.TEXT, " "))
+            self._emit_traditional_cond(field_val, out)
+        out.append(Token(TokenKind.NEWLINE, ""))
+        out.append(Token(TokenKind.KEYWORD, "THEN"))
+        out.append(Token(TokenKind.TEXT, " "))
+        self._emit_action(p, out)
+        return out
+
+    def render_chain(self, chain: ClausalChain) -> list[Token]:
+        """Render a multi-record clausal chain (WHEN/AT/EVERY + body).
+
+        Output mirrors PC Access's structured-English: trigger on the
+        first line, conditions indented two spaces with ``AND IF`` /
+        ``OR IF`` keywords, actions on their own lines under ``THEN`` /
+        ``AND``.
+        """
+        out: list[Token] = []
+        head = chain.head
+        head_kind = head.prog_type
+        if head_kind == int(ProgramType.WHEN):
+            self._emit_when_header(head, out)
+        elif head_kind == int(ProgramType.AT):
+            self._emit_at_header(head, out)
+        elif head_kind == int(ProgramType.EVERY):
+            self._emit_every_header(head, out)
+        else:
+            out.append(Token(TokenKind.TEXT, f"(chain head type {head_kind}?)"))
+        # Conditions: AND IF / OR IF, indented.
+        for cond in chain.conditions:
+            out.append(Token(TokenKind.NEWLINE, ""))
+            out.append(Token(TokenKind.INDENT, "  "))
+            keyword = "OR IF" if cond.prog_type == int(ProgramType.OR) else "AND IF"
+            out.append(Token(TokenKind.KEYWORD, keyword))
+            out.append(Token(TokenKind.TEXT, " "))
+            self._emit_and_record(cond, out)
+        # Actions: first one prefixed THEN, rest AND.
+        for i, action in enumerate(chain.actions):
+            out.append(Token(TokenKind.NEWLINE, ""))
+            out.append(Token(TokenKind.KEYWORD, "THEN" if i == 0 else "AND"))
+            out.append(Token(TokenKind.TEXT, " "))
+            self._emit_action(action, out)
+        return out
+
+    def summarize_program(self, p: Program) -> list[Token]:
+        """One-line summary suitable for the list view.
+
+        Format: ``<trigger summary> → <action summary>``. Conditions
+        on compact-form programs are elided with ``(+N conds)``.
+        """
+        out: list[Token] = []
+        try:
+            kind = ProgramType(p.prog_type)
+        except ValueError:
+            out.append(Token(TokenKind.TEXT, f"?type {p.prog_type}"))
+            return out
+        if kind == ProgramType.TIMED:
+            self._emit_timed_summary(p, out)
+        elif kind == ProgramType.EVENT:
+            self._emit_event_summary(p, out)
+        elif kind == ProgramType.YEARLY:
+            self._emit_yearly_summary(p, out)
+        elif kind == ProgramType.REMARK:
+            self._emit_remark(p, out)
+            return out
+        elif kind == ProgramType.FREE:
+            out.append(Token(TokenKind.TEXT, "(empty)"))
+            return out
+        else:
+            out.append(Token(TokenKind.TEXT, kind.name))
+            return out
+        # Inline condition count.
+        cond_count = (1 if p.cond else 0) + (1 if p.cond2 else 0)
+        if cond_count:
+            out.append(Token(TokenKind.TEXT, f" (+{cond_count} cond)"))
+        out.append(Token(TokenKind.TEXT, " → "))
+        self._emit_action(p, out)
+        return out
+
+    def summarize_chain(self, chain: ClausalChain) -> list[Token]:
+        """One-line summary of a clausal chain for the list view."""
+        out: list[Token] = []
+        head = chain.head
+        if head.prog_type == int(ProgramType.WHEN):
+            out.append(Token(TokenKind.KEYWORD, "WHEN"))
+            out.append(Token(TokenKind.TEXT, " "))
+            self._emit_event(head.event_id, out)
+        elif head.prog_type == int(ProgramType.AT):
+            out.append(Token(TokenKind.KEYWORD, "AT"))
+            out.append(Token(TokenKind.TEXT, " "))
+            out.append(Token(TokenKind.VALUE, head.format_time()))
+            out.append(Token(TokenKind.TEXT, " "))
+            out.append(Token(TokenKind.VALUE, format_days(head.days)))
+        elif head.prog_type == int(ProgramType.EVERY):
+            out.append(Token(TokenKind.KEYWORD, "EVERY"))
+            out.append(Token(TokenKind.TEXT, " "))
+            out.append(Token(TokenKind.VALUE, _format_interval(head.every_interval)))
+        if chain.conditions:
+            out.append(Token(
+                TokenKind.TEXT,
+                f" (+{len(chain.conditions)} cond)",
+            ))
+        out.append(Token(TokenKind.TEXT, " → "))
+        # Show the first action only on summary; "+N more" if there are more.
+        if chain.actions:
+            self._emit_action(chain.actions[0], out)
+            if len(chain.actions) > 1:
+                out.append(Token(
+                    TokenKind.TEXT,
+                    f" (+{len(chain.actions) - 1} more)",
+                ))
+        return out
+
+    # ---- emit helpers — triggers / headers -------------------------------
+
+    def _emit_timed_header(self, p: Program, out: list[Token]) -> None:
+        out.append(Token(TokenKind.KEYWORD, "AT"))
+        out.append(Token(TokenKind.TEXT, " "))
+        out.append(Token(TokenKind.VALUE, p.format_time()))
+        out.append(Token(TokenKind.TEXT, " "))
+        out.append(Token(TokenKind.VALUE, format_days(p.days)))
+
+    def _emit_event_header(self, p: Program, out: list[Token]) -> None:
+        out.append(Token(TokenKind.KEYWORD, "WHEN"))
+        out.append(Token(TokenKind.TEXT, " "))
+        self._emit_event(p.event_id, out)
+
+    def _emit_yearly_header(self, p: Program, out: list[Token]) -> None:
+        out.append(Token(TokenKind.KEYWORD, "ON"))
+        out.append(Token(TokenKind.TEXT, " "))
+        out.append(Token(
+            TokenKind.VALUE, f"{p.month:d}/{p.day:d} at {p.hour:02d}:{p.minute:02d}",
+        ))
+
+    def _emit_remark(self, p: Program, out: list[Token]) -> None:
+        rid = p.remark_id if p.remark_id is not None else 0
+        out.append(Token(TokenKind.KEYWORD, "REMARK"))
+        out.append(Token(TokenKind.TEXT, f" #{rid}"))
+
+    def _emit_when_header(self, p: Program, out: list[Token]) -> None:
+        out.append(Token(TokenKind.KEYWORD, "WHEN"))
+        out.append(Token(TokenKind.TEXT, " "))
+        self._emit_event(p.event_id, out)
+
+    def _emit_at_header(self, p: Program, out: list[Token]) -> None:
+        out.append(Token(TokenKind.KEYWORD, "AT"))
+        out.append(Token(TokenKind.TEXT, " "))
+        out.append(Token(TokenKind.VALUE, p.format_time()))
+        out.append(Token(TokenKind.TEXT, " "))
+        out.append(Token(TokenKind.VALUE, format_days(p.days)))
+
+    def _emit_every_header(self, p: Program, out: list[Token]) -> None:
+        out.append(Token(TokenKind.KEYWORD, "EVERY"))
+        out.append(Token(TokenKind.TEXT, " "))
+        out.append(Token(TokenKind.VALUE, _format_interval(p.every_interval)))
+
+    def _emit_timed_summary(self, p: Program, out: list[Token]) -> None:
+        out.append(Token(TokenKind.VALUE, p.format_time()))
+        out.append(Token(TokenKind.TEXT, " "))
+        out.append(Token(TokenKind.VALUE, format_days(p.days)))
+
+    def _emit_event_summary(self, p: Program, out: list[Token]) -> None:
+        out.append(Token(TokenKind.KEYWORD, "WHEN"))
+        out.append(Token(TokenKind.TEXT, " "))
+        self._emit_event(p.event_id, out)
+
+    def _emit_yearly_summary(self, p: Program, out: list[Token]) -> None:
+        out.append(Token(
+            TokenKind.VALUE,
+            f"{p.month:d}/{p.day:d} @ {p.hour:02d}:{p.minute:02d}",
+        ))
+
+    def _emit_event(self, event_id: int, out: list[Token]) -> None:
+        """Render an event-ID as natural language.
+
+        Mirrors clsText.GetEventCategory (clsText.cs:1585-...) for the
+        common categories. Unknown event IDs render as ``"event 0xNNNN"``.
+        """
+        if event_id == EVENT_PHONE_DEAD:
+            out.append(Token(TokenKind.TEXT, "phone line is dead"))
+            return
+        if event_id == EVENT_PHONE_RINGING:
+            out.append(Token(TokenKind.TEXT, "phone is ringing"))
+            return
+        if event_id == EVENT_PHONE_OFF_HOOK:
+            out.append(Token(TokenKind.TEXT, "phone is off hook"))
+            return
+        if event_id == EVENT_PHONE_ON_HOOK:
+            out.append(Token(TokenKind.TEXT, "phone is on hook"))
+            return
+        if event_id == EVENT_AC_POWER_OFF:
+            out.append(Token(TokenKind.TEXT, "AC power lost"))
+            return
+        if event_id == EVENT_AC_POWER_ON:
+            out.append(Token(TokenKind.TEXT, "AC power restored"))
+            return
+        # USER_MACRO_BUTTON (high byte == 0)
+        if (event_id & 0xFF00) == 0x0000:
+            button = event_id & 0xFF
+            self._emit_ref("button", button, out)
+            out.append(Token(TokenKind.TEXT, " is pressed"))
+            return
+        # ZONE_STATE_CHANGE (& 0xFC00 == 0x0400)
+        if (event_id & 0xFC00) == 0x0400:
+            zone_state = event_id & 0x03FF
+            zone = (zone_state // 4) + 1
+            state = zone_state % 4
+            self._emit_ref("zone", zone, out)
+            state_label = {
+                0: "becomes secure",
+                1: "becomes not ready",
+                2: "reports trouble",
+                3: "reports tamper",
+            }.get(state, f"changes to state {state}")
+            out.append(Token(TokenKind.TEXT, " " + state_label))
+            return
+        # UNIT_STATE_CHANGE (& 0xFC00 == 0x0800)
+        if (event_id & 0xFC00) == 0x0800:
+            unit_state = event_id & 0x03FF
+            unit = (unit_state // 2) + 1
+            on = unit_state & 1
+            self._emit_ref("unit", unit, out)
+            out.append(Token(TokenKind.TEXT, " turns " + ("ON" if on else "OFF")))
+            return
+        out.append(Token(TokenKind.TEXT, f"event 0x{event_id:04x}"))
+
+    # ---- emit helpers — conditions ---------------------------------------
+
+    def _emit_traditional_cond(self, cond: int, out: list[Token]) -> None:
+        """Render a compact-form ``cond`` u16 (TIMED/EVENT/YEARLY inline
+        AND condition).
+
+        These use a different bit-layout from AND-record cond fields —
+        see clsText.GetConditionalText (clsText.cs:2224-2274).
+        """
+        family = (cond >> 8) & 0xFC
+        if family == 0:
+            misc = cond & 0x0F
+            self._emit_misc_conditional(misc, out)
+            return
+        if family == ProgramCond.ZONE:
+            zone = cond & 0xFF
+            not_ready = bool(cond & 0x0200)
+            self._emit_ref("zone", zone, out)
+            out.append(Token(TokenKind.TEXT, " is "))
+            out.append(Token(TokenKind.OPERATOR, "not ready" if not_ready else "secure"))
+            return
+        if family == ProgramCond.CTRL:
+            unit = cond & 0x01FF
+            on = bool(cond & 0x0200)
+            self._emit_ref("unit", unit, out)
+            out.append(Token(TokenKind.TEXT, " is "))
+            out.append(Token(TokenKind.OPERATOR, "ON" if on else "OFF"))
+            return
+        if family == ProgramCond.TIME:
+            tc = cond & 0xFF
+            enabled = bool(cond & 0x0200)
+            out.append(Token(TokenKind.TEXT, "Time clock "))
+            out.append(Token(TokenKind.VALUE, str(tc)))
+            out.append(Token(TokenKind.TEXT, " is "))
+            out.append(Token(TokenKind.OPERATOR,
+                             "enabled" if enabled else "disabled"))
+            return
+        # SEC default: high nibble = mode, bits 8-11 = area.
+        area = (cond >> 8) & 0x0F
+        mode = (cond >> 12) & 0x07
+        if area == 0:
+            area = 1
+        self._emit_ref("area", area, out)
+        out.append(Token(TokenKind.TEXT, " is "))
+        out.append(Token(
+            TokenKind.VALUE,
+            _SECURITY_MODE_NAMES.get(mode, f"mode {mode}"),
+        ))
+
+    def _emit_and_record(self, c: Program, out: list[Token]) -> None:
+        """Render an AND/OR Program record (Traditional or Structured)."""
+        if c.and_op == CondOP.ARG1_TRADITIONAL:
+            self._emit_traditional_and(c, out)
+        else:
+            self._emit_structured_and(c, out)
+
+    def _emit_traditional_and(self, c: Program, out: list[Token]) -> None:
+        """AND/OR record carrying a Traditional condition.
+
+        Encoding via clsConditionLine.Cond (clsConditionLine.cs:17-33):
+        ``and_family`` is the family+selector byte; ``and_instance`` is
+        the object index (1-based).
+        """
+        family = c.and_family
+        instance = c.and_instance
+        family_major = family & 0xFC
+        secondary = bool(family & 0x02)
+        if family_major == 0:
+            self._emit_misc_conditional(family & 0x0F, out)
+            return
+        if family_major == ProgramCond.ZONE:
+            self._emit_ref("zone", instance, out)
+            out.append(Token(TokenKind.TEXT, " is "))
+            out.append(Token(
+                TokenKind.OPERATOR, "not ready" if secondary else "secure",
+            ))
+            return
+        if family_major == ProgramCond.CTRL:
+            self._emit_ref("unit", instance, out)
+            out.append(Token(TokenKind.TEXT, " is "))
+            out.append(Token(
+                TokenKind.OPERATOR, "ON" if secondary else "OFF",
+            ))
+            return
+        if family_major == ProgramCond.TIME:
+            out.append(Token(TokenKind.TEXT, "Time clock "))
+            out.append(Token(TokenKind.VALUE, str(instance)))
+            out.append(Token(TokenKind.TEXT, " is "))
+            out.append(Token(
+                TokenKind.OPERATOR,
+                "enabled" if secondary else "disabled",
+            ))
+            return
+        # SEC: high nibble = mode, low = area
+        area = family & 0x0F
+        mode = (family >> 4) & 0x07
+        if area == 0:
+            area = 1
+        self._emit_ref("area", area, out)
+        out.append(Token(TokenKind.TEXT, " is "))
+        out.append(Token(
+            TokenKind.VALUE,
+            _SECURITY_MODE_NAMES.get(mode, f"mode {mode}"),
+        ))
+
+    def _emit_misc_conditional(self, misc_code: int, out: list[Token]) -> None:
+        try:
+            cat = MiscConditional(misc_code)
+        except ValueError:
+            out.append(Token(TokenKind.TEXT, f"misc condition {misc_code}"))
+            return
+        labels = {
+            MiscConditional.NONE: "always",
+            MiscConditional.NEVER: "never",
+            MiscConditional.LIGHT: "it is light outside",
+            MiscConditional.DARK: "it is dark outside",
+            MiscConditional.PHONE_DEAD: "phone line is dead",
+            MiscConditional.PHONE_RINGING: "phone is ringing",
+            MiscConditional.PHONE_OFF_HOOK: "phone is off hook",
+            MiscConditional.PHONE_ON_HOOK: "phone is on hook",
+            MiscConditional.AC_POWER_OFF: "AC power is off",
+            MiscConditional.AC_POWER_ON: "AC power is on",
+            MiscConditional.BATTERY_LOW: "battery is low",
+            MiscConditional.BATTERY_OK: "battery is OK",
+            MiscConditional.ENERGY_COST_LOW: "energy cost is low",
+            MiscConditional.ENERGY_COST_MID: "energy cost is mid",
+            MiscConditional.ENERGY_COST_HIGH: "energy cost is high",
+            MiscConditional.ENERGY_COST_CRITICAL: "energy cost is critical",
+        }
+        out.append(Token(TokenKind.TEXT, labels.get(cat, cat.name)))
+
+    def _emit_structured_and(self, c: Program, out: list[Token]) -> None:
+        """Render an ``Arg1 OP Arg2`` AND/OR record.
+
+        For each arg side we render either an object reference + field,
+        or a literal value. The operator goes in between.
+        """
+        self._emit_structured_arg(
+            c.and_arg1_argtype, c.and_arg1_ix, c.and_arg1_field, out,
+        )
+        out.append(Token(TokenKind.TEXT, " "))
+        out.append(Token(TokenKind.OPERATOR, _OP_SYMBOLS.get(c.and_op, "?")))
+        out.append(Token(TokenKind.TEXT, " "))
+        self._emit_structured_arg(
+            c.and_arg2_argtype, c.and_arg2_ix, c.and_arg2_field, out,
+        )
+
+    def _emit_structured_arg(
+        self, argtype: int, ix: int, field_id: int, out: list[Token],
+    ) -> None:
+        if argtype == CondArgType.CONSTANT:
+            out.append(Token(TokenKind.VALUE, str(ix)))
+            return
+        kind = _ARGTYPE_KIND.get(argtype)
+        if kind is None:
+            out.append(Token(TokenKind.TEXT, f"argtype{argtype}#{ix}"))
+            return
+        if kind == "timedate":
+            field_label = _TIMEDATE_FIELD_LABELS.get(field_id, f"field{field_id}")
+            out.append(Token(TokenKind.TEXT, field_label))
+            return
+        # Object reference with field suffix (when known).
+        self._emit_ref(kind, ix, out)
+        field_label = _FIELD_LABELS.get((kind, field_id))
+        if field_label:
+            out.append(Token(TokenKind.TEXT, "."))
+            out.append(Token(TokenKind.TEXT, field_label))
+
+    # ---- emit helpers — actions ------------------------------------------
+
+    def _emit_action(self, p: Program, out: list[Token]) -> None:
+        """Render the cmd / par / pr2 triple as a friendly verb.
+
+        For unrecognised commands we fall back to the raw enum name,
+        which keeps the rendering useful even for less-common
+        Command values we haven't mapped yet.
+        """
+        cmd_byte = p.cmd
+        try:
+            cmd = Command(cmd_byte)
+        except ValueError:
+            out.append(Token(TokenKind.TEXT, f"command {cmd_byte}"))
+            return
+        verb_entry = _COMMAND_VERBS.get(cmd_byte)
+        verb, ref_kind = verb_entry if verb_entry else (cmd.name.replace("_", " "), None)
+        out.append(Token(TokenKind.KEYWORD, verb))
+        if ref_kind is not None:
+            out.append(Token(TokenKind.TEXT, " "))
+            self._emit_ref(ref_kind, p.pr2, out)
+        if cmd == Command.UNIT_LEVEL:
+            out.append(Token(TokenKind.TEXT, " to "))
+            out.append(Token(TokenKind.VALUE, f"{p.par}%"))
+
+    # ---- emit helpers — refs ---------------------------------------------
+
+    def _emit_ref(self, kind: str, index: int, out: list[Token]) -> None:
+        """Emit a typed object reference token with name + live state."""
+        name = self.names.name_of(kind, index)
+        if not name:
+            name = f"{kind.capitalize()} {index}"
+        state = None
+        if self.state is not None:
+            state = self.state.state_of(kind, index)
+        out.append(Token(
+            TokenKind.REF, name,
+            entity_kind=kind, entity_id=index, state=state,
+        ))
+
+
+# --------------------------------------------------------------------------
+# Tables — kept at module scope so they're not re-allocated per render
+# --------------------------------------------------------------------------
+
+
+_OP_SYMBOLS: dict[int, str] = {
+    int(CondOP.ARG1_EQ_ARG2): "==",
+    int(CondOP.ARG1_NE_ARG2): "!=",
+    int(CondOP.ARG1_LT_ARG2): "<",
+    int(CondOP.ARG1_GT_ARG2): ">",
+    int(CondOP.ARG1_ODD): "is odd",
+    int(CondOP.ARG1_EVEN): "is even",
+    int(CondOP.ARG1_MULTIPLE_ARG2): "is multiple of",
+    int(CondOP.ARG1_IN_ARG2): "in",
+    int(CondOP.ARG1_NOT_IN_ARG2): "not in",
+}
+
+
+_ARGTYPE_KIND: dict[int, str] = {
+    int(CondArgType.ZONE): "zone",
+    int(CondArgType.UNIT): "unit",
+    int(CondArgType.THERMOSTAT): "thermostat",
+    int(CondArgType.AREA): "area",
+    int(CondArgType.TIME_DATE): "timedate",
+}
+
+
+_FIELD_LABELS: dict[tuple[str, int], str] = {
+    # enuZoneField
+    ("zone", 1): "LoopReading",
+    ("zone", 2): "CurrentState",
+    ("zone", 3): "ArmingState",
+    ("zone", 4): "AlarmState",
+    # enuUnitField
+    ("unit", 1): "CurrentState",
+    ("unit", 2): "PreviousState",
+    ("unit", 3): "Timer",
+    ("unit", 4): "Level",
+    # enuThermostatField
+    ("thermostat", 1): "Temperature",
+    ("thermostat", 2): "HeatSetpoint",
+    ("thermostat", 3): "CoolSetpoint",
+    ("thermostat", 4): "SystemMode",
+    ("thermostat", 5): "FanMode",
+    ("thermostat", 6): "HoldMode",
+    ("thermostat", 7): "FreezeAlarm",
+    ("thermostat", 8): "CommError",
+    ("thermostat", 9): "Humidity",
+    ("thermostat", 10): "HumidifySetpoint",
+    ("thermostat", 11): "DehumidifySetpoint",
+    ("thermostat", 12): "OutdoorTemperature",
+    ("thermostat", 13): "SystemStatus",
+}
+
+
+_TIMEDATE_FIELD_LABELS: dict[int, str] = {
+    1: "Date",
+    2: "Year",
+    3: "Month",
+    4: "Day",
+    5: "DayOfWeek",
+    6: "Time",
+    7: "DST_Flag",
+    8: "Hour",
+    9: "Minute",
+    10: "SunriseSunset",
+}
+
+
+def _format_interval(seconds: int) -> str:
+    """Render an EVERY-program interval. Treats the raw value as
+    seconds — matches the live-fixture observation that 5 SECONDS UI
+    selection stores as 5. Higher values fall through to natural
+    ``"30 min"`` / ``"2 hr"`` shortenings for readability."""
+    if seconds <= 0:
+        return "(disabled)"
+    if seconds < 60:
+        return f"{seconds} sec"
+    if seconds < 3600:
+        return f"{seconds // 60} min"
+    return f"{seconds // 3600} hr"

src/omni_pca/v1/__init__.py

@@ -0,0 +1,52 @@
+"""V1 (legacy) Omni-Link protocol over UDP.
+
+The v2 path in :mod:`omni_pca` (TCP, OmniLink2Message, StartChar 0x21,
+parameterised RequestProperties / RequestExtendedStatus) is what most
+modern firmware speaks. This subpackage exists because some panels are
+configured at the network module to listen on **UDP only**, in which case
+PC Access falls back to the v1 wire protocol (typed RequestZoneStatus,
+RequestUnitStatus, etc., StartChar 0x5A, OmniLinkMessage outer = 0x10).
+
+Reference: clsOmniLinkConnection.cs:353-360 (ConnectionProtocol() returns
+V1 for Modem/UDP/Serial, V2 only for TCP).
+"""
+
+from __future__ import annotations
+
+from .adapter import OmniClientV1Adapter
+from .client import OmniClientV1, OmniNakError, OmniProtocolError
+from .connection import (
+    HandshakeError,
+    InvalidEncryptionKeyError,
+    OmniConnectionV1,
+    RequestTimeoutError,
+)
+from .messages import (
+    NameRecord,
+    NameType,
+    parse_v1_aux_status,
+    parse_v1_namedata,
+    parse_v1_system_status,
+    parse_v1_thermostat_status,
+    parse_v1_unit_status,
+    parse_v1_zone_status,
+)
+
+__all__ = [
+    "HandshakeError",
+    "InvalidEncryptionKeyError",
+    "NameRecord",
+    "NameType",
+    "OmniClientV1",
+    "OmniClientV1Adapter",
+    "OmniConnectionV1",
+    "OmniNakError",
+    "OmniProtocolError",
+    "RequestTimeoutError",
+    "parse_v1_aux_status",
+    "parse_v1_namedata",
+    "parse_v1_system_status",
+    "parse_v1_thermostat_status",
+    "parse_v1_unit_status",
+    "parse_v1_zone_status",
+]

src/omni_pca/v1/adapter.py

@@ -0,0 +1,441 @@
+"""V2-shape adapter over :class:`OmniClientV1`.
+
+The Home Assistant coordinator was written against :class:`omni_pca.client.OmniClient`
+(the v2 API). When the user configures ``transport=udp`` we need a client
+that *looks* like ``OmniClient`` but speaks v1-over-UDP underneath.
+
+This adapter exposes only the methods the coordinator and entity
+platforms actually call. Where v1 lacks a v2 opcode (Properties for
+zones/units/areas, AcknowledgeAlerts), we synthesize a sensible
+fallback rather than raise — HA users shouldn't have to care that their
+panel is on a different wire protocol.
+
+What the adapter does:
+
+* **Discovery (``list_*_names``)**: delegates to ``OmniClientV1`` (which
+  drives the streaming ``UploadNames`` flow once per call).
+* **Properties (``get_object_properties``)**: synthesizes a minimal
+  ``*Properties`` dataclass from the name alone. v1 has no Properties
+  opcode, so we can't fetch zone_type / unit_type / area_alarms / etc.
+  Defaults are zero — entity platforms read mostly the name + the live
+  ``*Status`` snapshot, so this works for the common case.
+* **Bulk status (``get_extended_status``)**: routes Zone/Unit/Thermostat/
+  AuxSensor through the v1 typed ``get_*_status`` calls and returns the
+  resulting dataclass list (same shape v2 produces).
+* **Area status (``get_object_status(AREA, …)``)**: derives ``AreaStatus``
+  records from the per-area mode bytes in v1 ``SystemStatus`` — v1 has
+  no per-area status opcode and the modes are the only thing the panel
+  reports on UDP.
+* **Events (``events()``)**: returns an :class:`EventStream` filtered on
+  v1's SystemEvents opcode (35) instead of v2's (55). Word format is
+  identical, so the existing typed-event decoder works unchanged.
+* **Writes**: pass-through to the underlying ``OmniClientV1`` methods,
+  whose Command / ExecuteSecurityCommand payloads are byte-identical
+  to v2 — only the opcode differs.
+"""
+
+from __future__ import annotations
+
+from collections.abc import AsyncIterator, Awaitable, Callable
+from typing import Self
+
+from ..commands import Command
+from ..events import EventStream, SystemEvent
+from ..models import (
+    AreaProperties,
+    AreaStatus,
+    AuxSensorStatus,
+    ButtonProperties,
+    ObjectType,
+    SecurityMode,
+    SystemInformation,
+    SystemStatus,
+    ThermostatProperties,
+    ThermostatStatus,
+    UnitProperties,
+    UnitStatus,
+    ZoneProperties,
+    ZoneStatus,
+)
+from ..opcodes import OmniLinkMessageType
+from .client import OmniClientV1
+from .connection import OmniConnectionV1
+
+# Type used by coordinator for object_type arg (the IntEnum in
+# omni_pca.client is just a re-export of models.ObjectType).
+_ObjectType = ObjectType
+
+_DEFAULT_PORT = 4369
+
+
+class OmniClientV1Adapter:
+    """V2-shaped facade over :class:`OmniClientV1`.
+
+    Construct with the same kwargs as :class:`OmniClient`; the
+    coordinator does not need to know which one it has.
+    """
+
+    def __init__(
+        self,
+        host: str,
+        port: int = _DEFAULT_PORT,
+        controller_key: bytes = b"",
+        timeout: float = 5.0,
+        retry_count: int = 3,
+        **_ignored,
+    ) -> None:
+        # `transport=` and similar kwargs are accepted-and-ignored so the
+        # coordinator's construction call stays identical across v1/v2.
+        self._client = OmniClientV1(
+            host=host,
+            port=port,
+            controller_key=controller_key,
+            timeout=timeout,
+            retry_count=retry_count,
+        )
+
+    # ---- lifecycle ------------------------------------------------------
+
+    async def __aenter__(self) -> Self:
+        await self._client.__aenter__()
+        return self
+
+    async def __aexit__(self, exc_type, exc, tb) -> None:
+        await self._client.__aexit__(exc_type, exc, tb)
+
+    @property
+    def connection(self) -> OmniConnectionV1:
+        """Underlying :class:`OmniConnectionV1` — used by the coordinator's
+        low-level walks. v1's connection has the same ``unsolicited()`` /
+        ``request()`` surface as v2's, just a different wire dialect.
+        """
+        return self._client.connection
+
+    # ---- panel-wide reads ----------------------------------------------
+
+    async def get_system_information(self) -> SystemInformation:
+        return await self._client.get_system_information()
+
+    async def get_system_status(self) -> SystemStatus:
+        return await self._client.get_system_status()
+
+    # ---- discovery (cached once per coordinator setup) -----------------
+    #
+    # The coordinator calls list_*_names() once per object type. Each
+    # call drives a fresh UploadNames stream, which on this panel takes
+    # ~250ms per ~100 names. We cache the full bucketed dict on first
+    # call so the four list_*_names() calls + several synthesize-
+    # properties calls all share one network roundtrip.
+
+    async def _ensure_names(self) -> dict[int, dict[int, str]]:
+        cached = getattr(self, "_name_cache", None)
+        if cached is None:
+            cached = await self._client.list_all_names()
+            self._name_cache = cached
+        return cached
+
+    def _invalidate_names(self) -> None:
+        """Force the next discovery call to re-stream UploadNames."""
+        self._name_cache = None  # type: ignore[assignment]
+
+    async def list_zone_names(self) -> dict[int, str]:
+        return (await self._ensure_names()).get(1, {})  # NameType.ZONE
+
+    async def list_unit_names(self) -> dict[int, str]:
+        return (await self._ensure_names()).get(2, {})  # NameType.UNIT
+
+    async def list_area_names(self) -> dict[int, str]:
+        """Return area names, falling back to "Area N" when stream is empty.
+
+        Most v1 panels don't expose user-assigned area names — the slots
+        exist (8 for Omni Pro II) but the .pca file leaves them zero-
+        filled. HA needs *something* to label each area entity, so we
+        synthesize "Area 1".."Area 8" as a fixed-size fallback. The 8
+        is the Omni Pro II cap; we cap here even when ``SystemStatus``
+        reports more mode bytes because the long-form SystemStatus
+        payload mixes in EE-expansion telemetry past byte 22.
+        """
+        named = (await self._ensure_names()).get(5, {})  # NameType.AREA
+        if named:
+            return named
+        return {i: f"Area {i}" for i in range(1, 9)}
+
+    async def list_thermostat_names(self) -> dict[int, str]:
+        return (await self._ensure_names()).get(6, {})  # NameType.THERMOSTAT
+
+    async def list_button_names(self) -> dict[int, str]:
+        return (await self._ensure_names()).get(3, {})  # NameType.BUTTON
+
+    async def list_code_names(self) -> dict[int, str]:
+        return (await self._ensure_names()).get(4, {})  # NameType.CODE
+
+    async def list_message_names(self) -> dict[int, str]:
+        return (await self._ensure_names()).get(7, {})  # NameType.MESSAGE
+
+    # ---- programs ------------------------------------------------------
+
+    def iter_programs(self):
+        """Forward to OmniClientV1.iter_programs (streaming UploadPrograms).
+
+        Same async-iterator shape as :meth:`OmniClient.iter_programs` so the
+        coordinator does not need a transport branch.
+        """
+        return self._client.iter_programs()
+
+    async def download_program(self, slot: int, program) -> None:
+        """v1 forwarder — raises NotImplementedError. See client.py."""
+        await self._client.download_program(slot, program)
+
+    async def clear_program(self, slot: int) -> None:
+        await self._client.clear_program(slot)
+
+    # ---- properties synthesis ------------------------------------------
+
+    async def get_object_properties(
+        self, object_type: ObjectType, index: int
+    ) -> ZoneProperties | UnitProperties | AreaProperties | ThermostatProperties | None:
+        """Synthesize a Properties dataclass from the name alone.
+
+        v1 has no ``RequestProperties`` opcode; the rich fields v2 carries
+        (zone_type, unit areas bitfield, exit/entry delays, …) simply
+        aren't reachable on UDP. We return a minimal dataclass with just
+        ``index`` + ``name`` populated and everything else defaulted to
+        0/False so entity setup doesn't need a transport branch.
+
+        Returns ``None`` if the object isn't defined (no name and not in
+        the default area-fallback range), which mirrors v2's behavior
+        when ``RequestProperties`` walks past the last defined object.
+        """
+        names = await self._ensure_names()
+        if object_type == ObjectType.ZONE:
+            name = names.get(1, {}).get(index)
+            if not name:
+                return None
+            return ZoneProperties(
+                index=index, name=name, zone_type=0, area=1,
+                options=0, status=0, loop=0,
+            )
+        if object_type == ObjectType.UNIT:
+            name = names.get(2, {}).get(index)
+            if not name:
+                return None
+            return UnitProperties(
+                index=index, name=name, unit_type=0,
+                status=0, time=0, areas=0,
+            )
+        if object_type == ObjectType.AREA:
+            # Use the same fallback logic as list_area_names so HA always
+            # gets at least the 8 default-area entries.
+            label = (await self.list_area_names()).get(index)
+            if label is None:
+                return None
+            return AreaProperties(
+                index=index, name=label, mode=0, alarms=0,
+                enabled=True, entry_delay=0, exit_delay=0,
+            )
+        if object_type == ObjectType.THERMOSTAT:
+            name = names.get(6, {}).get(index)
+            if not name:
+                return None
+            return ThermostatProperties(
+                index=index, name=name, thermostat_type=0,
+                communicating=True,
+            )
+        if object_type == ObjectType.BUTTON:
+            name = names.get(3, {}).get(index)
+            if not name:
+                return None
+            return ButtonProperties(index=index, name=name)
+        return None
+
+    # ---- bulk status ---------------------------------------------------
+
+    # Per-type max records per chunk. Empirically firmware 2.12 caps unit
+    # responses around 62 records regardless of the MessageLength byte
+    # limit; other types follow similar conservative caps. We chunk well
+    # under those thresholds to leave headroom for any per-firmware
+    # variance and the AES zero-padding the wire frames add.
+    _CHUNK_SIZES: dict[int, int] = {
+        ObjectType.ZONE: 80,         # 2 B/rec, panel caps high enough
+        ObjectType.UNIT: 40,         # firmware 2.12 NAKs at 63+ records
+        ObjectType.THERMOSTAT: 30,
+        ObjectType.AUXILIARY: 60,
+    }
+
+    async def get_extended_status(
+        self,
+        object_type: ObjectType,
+        start: int,
+        end: int | None = None,
+    ) -> list:
+        """Route v2 ``get_extended_status`` to the matching v1 typed call.
+
+        v1 panels (Omni Pro II) can have 511 units across a sparse
+        address space. We chunk wide ranges into per-type-sized batches
+        and concatenate the records — same effect for the caller, only
+        the wire transcript is different.
+        """
+        last = end if end is not None else start
+        if object_type == ObjectType.ZONE:
+            fetch = self._client.get_zone_status
+        elif object_type == ObjectType.UNIT:
+            fetch = self._client.get_unit_status
+        elif object_type == ObjectType.THERMOSTAT:
+            fetch = self._client.get_thermostat_status
+        elif object_type == ObjectType.AUXILIARY:
+            fetch = self._client.get_aux_status
+        else:
+            raise ValueError(
+                f"v1 has no bulk extended-status opcode for {object_type.name}"
+            )
+
+        chunk = self._CHUNK_SIZES.get(int(object_type), 40)
+        out: dict[int, object] = {}
+        cur = start
+        while cur <= last:
+            chunk_end = min(cur + chunk - 1, last)
+            records = await fetch(cur, chunk_end)
+            out.update(records)
+            cur = chunk_end + 1
+        return [out[i] for i in sorted(out)]
+
+    async def get_object_status(
+        self,
+        object_type: ObjectType,
+        start: int,
+        end: int | None = None,
+    ) -> list:
+        """Synthesize AreaStatus from SystemStatus's per-area mode bytes.
+
+        v1 has no per-area status opcode — but the SystemStatus payload
+        carries one ``Mode`` byte per area (single-area panels see one
+        byte at offset 15, multi-area panels see N consecutive bytes).
+        We promote each into an :class:`AreaStatus` with just ``index``
+        and ``mode`` populated; entry/exit timers and alarms are zero
+        because the protocol doesn't expose them at this level.
+
+        For non-area object types we fall back to extended-status, which
+        on v1 maps to the basic typed-status opcodes (which is what the
+        v2 coordinator actually wants anyway since v2's basic and
+        extended status are interchangeable in shape).
+        """
+        if object_type != ObjectType.AREA:
+            return await self.get_extended_status(object_type, start, end)
+
+        last = end if end is not None else start
+        status = await self._client.get_system_status()
+        # First N bytes of area_alarms are valid area modes; the rest are
+        # EE-expansion data on long SystemStatus payloads (firmware 2.12
+        # length=39 form). We can't reliably tell where modes stop, so
+        # match against the list_area_names() count from the same
+        # SystemStatus.
+        area_count = max(1, min(8, len(status.area_alarms)))
+        out: list[AreaStatus] = []
+        for idx in range(start, min(last, area_count) + 1):
+            mode_pair = (
+                status.area_alarms[idx - 1] if idx - 1 < len(status.area_alarms)
+                else (0, 0)
+            )
+            out.append(
+                AreaStatus(
+                    index=idx,
+                    mode=mode_pair[0],
+                    last_user=0,
+                    entry_timer_secs=0,
+                    exit_timer_secs=0,
+                    alarms=mode_pair[1],
+                )
+            )
+        return out
+
+    # ---- events --------------------------------------------------------
+
+    def events(self) -> AsyncIterator[SystemEvent]:
+        """v1-aware EventStream — filters on v1 SystemEvents opcode (35)."""
+        return EventStream(
+            self._client.connection,
+            expected_opcode=int(OmniLinkMessageType.SystemEvents),
+        ).__aiter__()
+
+    async def subscribe(
+        self, callback: Callable[[object], Awaitable[None]]
+    ) -> None:
+        """Not used by the coordinator (which prefers ``events()``); kept
+        for API parity with :class:`OmniClient`. Raises ``NotImplementedError``
+        to flag accidental use — when we need it, copy the v2 implementation.
+        """
+        raise NotImplementedError(
+            "OmniClientV1Adapter.subscribe is not implemented; "
+            "use events() instead"
+        )
+
+    # ---- writes (pure pass-through) ------------------------------------
+
+    async def execute_command(
+        self, command: Command, parameter1: int = 0, parameter2: int = 0
+    ) -> None:
+        await self._client.execute_command(command, parameter1, parameter2)
+
+    async def execute_security_command(
+        self, area: int, mode: SecurityMode, code: int
+    ) -> None:
+        await self._client.execute_security_command(area, mode, code)
+
+    async def acknowledge_alerts(self) -> None:
+        await self._client.acknowledge_alerts()
+
+    async def turn_unit_on(self, index: int) -> None:
+        await self._client.turn_unit_on(index)
+
+    async def turn_unit_off(self, index: int) -> None:
+        await self._client.turn_unit_off(index)
+
+    async def set_unit_level(self, index: int, percent: int) -> None:
+        await self._client.set_unit_level(index, percent)
+
+    async def bypass_zone(self, index: int, code: int = 0) -> None:
+        await self._client.bypass_zone(index, code)
+
+    async def restore_zone(self, index: int, code: int = 0) -> None:
+        await self._client.restore_zone(index, code)
+
+    async def execute_button(self, index: int) -> None:
+        await self._client.execute_button(index)
+
+    async def execute_program(self, index: int) -> None:
+        """Run a panel program by index.
+
+        v1 ``enuUnitCommand.Execute`` (raw byte not aliased in our enum)
+        and v2 both use a generic Command. The Command enum's
+        ``EXECUTE_PROGRAM`` value works on both because the on-the-wire
+        Command body is byte-identical.
+        """
+        await self.execute_command(Command.EXECUTE_PROGRAM, parameter2=index)
+
+    async def show_message(self, index: int, beep: bool = True) -> None:
+        await self.execute_command(
+            Command.SHOW_MESSAGE_WITH_BEEP if beep else Command.SHOW_MESSAGE_NO_BEEP,
+            parameter2=index,
+        )
+
+    async def clear_message(self, index: int) -> None:
+        await self.execute_command(Command.CLEAR_MESSAGE, parameter2=index)
+
+    async def set_thermostat_system_mode(self, index: int, mode_value: int) -> None:
+        await self._client.set_thermostat_system_mode(index, mode_value)
+
+    async def set_thermostat_fan_mode(self, index: int, mode_value: int) -> None:
+        await self._client.set_thermostat_fan_mode(index, mode_value)
+
+    async def set_thermostat_hold_mode(self, index: int, mode_value: int) -> None:
+        await self._client.set_thermostat_hold_mode(index, mode_value)
+
+    async def set_thermostat_heat_setpoint_raw(
+        self, index: int, raw_temp: int
+    ) -> None:
+        await self._client.set_thermostat_heat_setpoint_raw(index, raw_temp)
+
+    async def set_thermostat_cool_setpoint_raw(
+        self, index: int, raw_temp: int
+    ) -> None:
+        await self._client.set_thermostat_cool_setpoint_raw(index, raw_temp)

src/omni_pca/v1/client.py

@@ -0,0 +1,518 @@
+"""High-level read-only client for v1-over-UDP Omni-Link panels.
+
+Mirrors the v2 :class:`omni_pca.client.OmniClient` API where the v1 wire
+protocol can satisfy the same call. Methods that require v2-only opcodes
+(e.g. ``RequestProperties``, ``AcknowledgeAlerts``) are intentionally
+absent until Phase 2b/2c add their v1 equivalents (streaming
+``UploadNames``, no-op or alternate dispatch).
+
+API parity goals (this module):
+    get_system_information()                       — same dataclass as v2
+    get_system_status()                            — same dataclass as v2
+    get_zone_status(start, end)         -> dict    — uses v1 ZoneStatus
+    get_unit_status(start, end)         -> dict    — uses v1 UnitStatus
+    get_thermostat_status(start, end)   -> dict    — uses v1 ThermostatStatus
+    get_aux_status(start, end)          -> dict    — uses v1 AuxiliaryStatus
+"""
+
+from __future__ import annotations
+
+import struct
+from collections.abc import AsyncIterator, Callable
+from typing import Self
+
+from ..commands import Command, CommandFailedError, SecurityCommandResponse
+from ..models import (
+    AuxSensorStatus,
+    SecurityMode,
+    SystemInformation,
+    SystemStatus,
+    ThermostatStatus,
+    UnitStatus,
+    ZoneStatus,
+)
+from ..opcodes import OmniLinkMessageType
+from .connection import OmniConnectionV1
+from .messages import (
+    NameRecord,
+    NameType,
+    parse_v1_aux_status,
+    parse_v1_namedata,
+    parse_v1_system_status,
+    parse_v1_thermostat_status,
+    parse_v1_unit_status,
+    parse_v1_zone_status,
+)
+
+_DEFAULT_PORT = 4369
+
+
+class OmniClientV1:
+    """Read-only v1-over-UDP Omni-Link client.
+
+    .. code-block:: python
+
+        async with OmniClientV1("192.168.1.9", controller_key=key) as c:
+            info = await c.get_system_information()
+            zones = await c.get_zone_status(1, 16)
+    """
+
+    def __init__(
+        self,
+        host: str,
+        port: int = _DEFAULT_PORT,
+        controller_key: bytes = b"",
+        timeout: float = 5.0,
+        retry_count: int = 3,
+    ) -> None:
+        self._conn = OmniConnectionV1(
+            host=host,
+            port=port,
+            controller_key=controller_key,
+            timeout=timeout,
+            retry_count=retry_count,
+        )
+
+    @property
+    def connection(self) -> OmniConnectionV1:
+        return self._conn
+
+    async def __aenter__(self) -> Self:
+        await self._conn.connect()
+        return self
+
+    async def __aexit__(self, exc_type, exc, tb) -> None:
+        await self._conn.close()
+
+    # ---- panel-wide ----------------------------------------------------
+
+    async def get_system_information(self) -> SystemInformation:
+        """Fetch model + firmware + dialer phone number.
+
+        Wire format identical to v2 (verified per
+        clsOLMsgSystemInformation.cs vs clsOL2MsgSystemInformation.cs);
+        we reuse the existing dataclass parser unchanged.
+        """
+        reply = await self._conn.request(
+            OmniLinkMessageType.RequestSystemInformation
+        )
+        self._expect(reply.opcode, OmniLinkMessageType.SystemInformation)
+        return SystemInformation.parse(reply.payload)
+
+    async def get_system_status(self) -> SystemStatus:
+        """Fetch panel time, sunrise/sunset, battery reading, area modes."""
+        reply = await self._conn.request(
+            OmniLinkMessageType.RequestSystemStatus
+        )
+        self._expect(reply.opcode, OmniLinkMessageType.SystemStatus)
+        return parse_v1_system_status(reply.payload)
+
+    # ---- bulk per-object status ----------------------------------------
+
+    async def get_zone_status(
+        self, start: int, end: int
+    ) -> dict[int, ZoneStatus]:
+        return await self._range_status(
+            OmniLinkMessageType.RequestZoneStatus,
+            OmniLinkMessageType.ZoneStatus,
+            start,
+            end,
+            parse_v1_zone_status,
+        )
+
+    async def get_unit_status(
+        self, start: int, end: int
+    ) -> dict[int, UnitStatus]:
+        return await self._range_status(
+            OmniLinkMessageType.RequestUnitStatus,
+            OmniLinkMessageType.UnitStatus,
+            start,
+            end,
+            parse_v1_unit_status,
+        )
+
+    async def get_thermostat_status(
+        self, start: int, end: int
+    ) -> dict[int, ThermostatStatus]:
+        return await self._range_status(
+            OmniLinkMessageType.RequestThermostatStatus,
+            OmniLinkMessageType.ThermostatStatus,
+            start,
+            end,
+            parse_v1_thermostat_status,
+        )
+
+    async def get_aux_status(
+        self, start: int, end: int
+    ) -> dict[int, AuxSensorStatus]:
+        return await self._range_status(
+            OmniLinkMessageType.RequestAuxiliaryStatus,
+            OmniLinkMessageType.AuxiliaryStatus,
+            start,
+            end,
+            parse_v1_aux_status,
+        )
+
+    # ---- discovery (streaming UploadNames) ------------------------------
+
+    async def iter_names(self) -> AsyncIterator[NameRecord]:
+        """Stream every defined name from the panel.
+
+        v1 has no per-type name request — a bare ``UploadNames`` triggers
+        the panel to dump *all* defined names of *all* types in a fixed
+        order (Zone, Unit, Button, Code, Area, Thermostat, Message, …),
+        each as a separate ``NameData`` reply that the client must
+        ``Acknowledge`` to advance. This iterator handles the lock-step
+        protocol and yields each record as it arrives.
+
+        Reference: clsHAC.cs:4418 (sends bare UploadNames),
+        OL1ReadConfigHandleResponse (loops over NameData/EOD).
+        """
+        async for reply in self._conn.iter_streaming(
+            OmniLinkMessageType.UploadNames
+        ):
+            if reply.opcode != int(OmniLinkMessageType.NameData):
+                # Defensive — iter_streaming normally only yields
+                # non-EOD/NAK replies, so this is a wire-format fault.
+                raise OmniProtocolError(
+                    f"unexpected opcode {reply.opcode} during UploadNames stream "
+                    f"(expected {int(OmniLinkMessageType.NameData)})"
+                )
+            yield parse_v1_namedata(reply.payload)
+
+    async def list_all_names(self) -> dict[int, dict[int, str]]:
+        """Bucket every defined name by ``NameType``.
+
+        Returns ``{name_type: {object_number: name}}``. Useful when HA
+        needs all four (zones+units+areas+thermostats) in one pass —
+        cheaper than four separate streams since the panel only supports
+        one streaming session at a time anyway.
+        """
+        out: dict[int, dict[int, str]] = {}
+        async for rec in self.iter_names():
+            out.setdefault(rec.name_type, {})[rec.number] = rec.name
+        return out
+
+    async def list_zone_names(self) -> dict[int, str]:
+        return (await self.list_all_names()).get(int(NameType.ZONE), {})
+
+    async def list_unit_names(self) -> dict[int, str]:
+        return (await self.list_all_names()).get(int(NameType.UNIT), {})
+
+    async def list_area_names(self) -> dict[int, str]:
+        return (await self.list_all_names()).get(int(NameType.AREA), {})
+
+    async def list_thermostat_names(self) -> dict[int, str]:
+        return (await self.list_all_names()).get(int(NameType.THERMOSTAT), {})
+
+    async def list_button_names(self) -> dict[int, str]:
+        return (await self.list_all_names()).get(int(NameType.BUTTON), {})
+
+    # ---- programs (streaming UploadPrograms) -----------------------------
+
+    async def iter_programs(self) -> AsyncIterator["Program"]:
+        """Stream every defined program from the panel.
+
+        v1 has no per-slot request — a bare ``UploadPrograms`` triggers
+        the panel to dump every defined program in ascending slot order,
+        each as a separate ``ProgramData`` reply that we must
+        ``Acknowledge`` to advance.
+
+        Reference: clsHAC.cs:4403 (bare UploadPrograms send), 4642-4651
+        (per-reply ack-walk), 4538-4540 (dispatch).
+
+        Yields decoded :class:`omni_pca.programs.Program` instances.
+        Empty slots are not transmitted — the iterator only sees defined
+        programs.
+        """
+        from ..programs import Program
+        async for reply in self._conn.iter_streaming(
+            OmniLinkMessageType.UploadPrograms
+        ):
+            if reply.opcode != int(OmniLinkMessageType.ProgramData):
+                raise OmniProtocolError(
+                    f"unexpected opcode {reply.opcode} during UploadPrograms stream "
+                    f"(expected {int(OmniLinkMessageType.ProgramData)})"
+                )
+            if len(reply.payload) < 2 + 14:
+                raise OmniProtocolError(
+                    f"ProgramData payload too short ({len(reply.payload)} bytes)"
+                )
+            slot = (reply.payload[0] << 8) | reply.payload[1]
+            yield Program.from_wire_bytes(reply.payload[2 : 2 + 14], slot=slot)
+
+    async def download_program(self, slot: int, program) -> None:
+        """v1 does not expose a single-slot DownloadProgram opcode.
+
+        On v1 the only way to change programs is the bulk
+        ``DownloadPrograms`` flow (clsHAC.cs:171, clsOLMsgDownloadPrograms),
+        which clears the panel's entire program table and re-streams
+        every record. That's destructive for HA's "edit one program"
+        use case, so we surface a structured error instead of silently
+        falling back. Use a v2-capable panel for editing.
+        """
+        raise NotImplementedError(
+            "v1 panels don't support single-slot program writes; "
+            "the DownloadPrograms flow clears all programs before "
+            "rewriting. Use a TCP-mode (v2) connection for editing."
+        )
+
+    async def clear_program(self, slot: int) -> None:
+        raise NotImplementedError(
+            "v1 panels don't support single-slot program clears; "
+            "see download_program for details."
+        )
+
+    # ---- write methods (Command + ExecuteSecurityCommand) ----------------
+    #
+    # The Command and ExecuteSecurityCommand payloads are byte-identical
+    # between v1 and v2 — only the outer opcode differs (15 vs 20 for
+    # Command, 102 vs 74 for ExecuteSecurityCommand). So these methods are
+    # near-duplicates of OmniClient's, just routed through the v1 opcodes.
+    # Reference: clsOLMsgCommand.cs, clsOLMsgExecuteSecurityCommand.cs.
+
+    async def execute_command(
+        self,
+        command: Command,
+        parameter1: int = 0,
+        parameter2: int = 0,
+    ) -> None:
+        """Send a generic Command (v1 opcode 15).
+
+        Wire payload (4 bytes, identical to v2 form):
+            [0] command byte (enuUnitCommand value)
+            [1] parameter1   (single byte; brightness, mode, code index, ...)
+            [2] parameter2 high byte (BE u16)
+            [3] parameter2 low  byte (object number for nearly every command)
+
+        Panel acks with v1 Ack (opcode 5) on success, Nak (6) on failure.
+        """
+        if not 0 <= parameter1 <= 0xFF:
+            raise ValueError(f"parameter1 must fit in a byte: {parameter1}")
+        if not 0 <= parameter2 <= 0xFFFF:
+            raise ValueError(f"parameter2 must fit in u16: {parameter2}")
+        payload = struct.pack(
+            ">BBH", int(command), parameter1 & 0xFF, parameter2 & 0xFFFF
+        )
+        reply = await self._conn.request(OmniLinkMessageType.Command, payload)
+        if reply.opcode == int(OmniLinkMessageType.Nak):
+            raise CommandFailedError(
+                f"panel NAK'd Command {command.name} "
+                f"(p1={parameter1}, p2={parameter2})"
+            )
+        if reply.opcode != int(OmniLinkMessageType.Ack):
+            raise CommandFailedError(
+                f"unexpected reply to Command {command.name}: opcode={reply.opcode}"
+            )
+
+    async def execute_security_command(
+        self,
+        area: int,
+        mode: SecurityMode,
+        code: int,
+    ) -> None:
+        """Arm or disarm a security area (v1 opcode 102).
+
+        Wire payload (6 bytes, identical to v2 form — clsOLMsgExecuteSecurityCommand.cs):
+            [0] area number (1-based)
+            [1] security mode byte (raw enuSecurityMode 0..7)
+            [2] code digit 1 (thousands)
+            [3] code digit 2 (hundreds)
+            [4] code digit 3 (tens)
+            [5] code digit 4 (ones)
+
+        Panel responds with:
+          * ``ExecuteSecurityCommandResponse`` (103) carrying a status byte
+            (0 = success, see :class:`SecurityCommandResponse` for others), or
+          * ``Ack`` (5) on success without structured response, or
+          * ``Nak`` (6) on flat-out refusal.
+
+        Raises:
+            ValueError: ``area`` not 1..255 or ``code`` not 0..9999.
+            CommandFailedError: panel Nak'd OR response status was non-zero;
+                ``failure_code`` carries the raw status byte when present.
+        """
+        if not 1 <= area <= 0xFF:
+            raise ValueError(f"area out of range: {area}")
+        if not 0 <= code <= 9999:
+            raise ValueError(f"code out of range (0000-9999): {code}")
+        d1 = (code // 1000) % 10
+        d2 = (code // 100) % 10
+        d3 = (code // 10) % 10
+        d4 = code % 10
+        payload = bytes([area & 0xFF, int(mode) & 0xFF, d1, d2, d3, d4])
+        reply = await self._conn.request(
+            OmniLinkMessageType.ExecuteSecurityCommand, payload
+        )
+        if reply.opcode == int(OmniLinkMessageType.Nak):
+            raise CommandFailedError(
+                f"panel NAK'd ExecuteSecurityCommand "
+                f"(area={area}, mode={mode.name})"
+            )
+        if reply.opcode == int(OmniLinkMessageType.ExecuteSecurityCommandResponse):
+            if not reply.payload:
+                raise CommandFailedError(
+                    "ExecuteSecurityCommandResponse with empty payload"
+                )
+            status = reply.payload[0]
+            if status != int(SecurityCommandResponse.SUCCESS):
+                try:
+                    label = SecurityCommandResponse(status).name
+                except ValueError:
+                    label = f"unknown({status})"
+                raise CommandFailedError(
+                    f"ExecuteSecurityCommand failed: {label}",
+                    failure_code=status,
+                )
+            return
+        if reply.opcode == int(OmniLinkMessageType.Ack):
+            return
+        raise CommandFailedError(
+            f"unexpected reply to ExecuteSecurityCommand: opcode={reply.opcode}"
+        )
+
+    async def acknowledge_alerts(self) -> None:
+        """V1 has no AcknowledgeAlerts opcode — silently no-op.
+
+        v2 introduced :attr:`OmniLink2MessageType.AcknowledgeAlerts` (60)
+        as a dedicated panel-wide ack; v1 panels expect alerts to be
+        cleared by per-area arming or by user action at the keypad. To
+        keep the v1↔v2 method shape parallel, this method is a no-op so
+        HA service callers don't need a per-transport branch.
+        """
+        return
+
+    # ---- thin command wrappers (one-liner conveniences) ------------------
+
+    async def turn_unit_on(self, index: int) -> None:
+        await self.execute_command(Command.UNIT_ON, parameter2=index)
+
+    async def turn_unit_off(self, index: int) -> None:
+        await self.execute_command(Command.UNIT_OFF, parameter2=index)
+
+    async def set_unit_level(self, index: int, percent: int) -> None:
+        if not 0 <= percent <= 100:
+            raise ValueError(f"percent must be 0..100: {percent}")
+        await self.execute_command(
+            Command.UNIT_LEVEL, parameter1=percent, parameter2=index
+        )
+
+    async def bypass_zone(self, index: int, code: int = 0) -> None:
+        await self.execute_command(
+            Command.BYPASS_ZONE, parameter1=code, parameter2=index
+        )
+
+    async def restore_zone(self, index: int, code: int = 0) -> None:
+        await self.execute_command(
+            Command.RESTORE_ZONE, parameter1=code, parameter2=index
+        )
+
+    async def execute_button(self, index: int) -> None:
+        await self.execute_command(Command.EXECUTE_BUTTON, parameter2=index)
+
+    async def set_thermostat_system_mode(self, index: int, mode_value: int) -> None:
+        if not 0 <= mode_value <= 0xFF:
+            raise ValueError(f"mode value must fit in a byte: {mode_value}")
+        await self.execute_command(
+            Command.SET_THERMOSTAT_SYSTEM_MODE,
+            parameter1=mode_value,
+            parameter2=index,
+        )
+
+    async def set_thermostat_fan_mode(self, index: int, mode_value: int) -> None:
+        await self.execute_command(
+            Command.SET_THERMOSTAT_FAN_MODE,
+            parameter1=mode_value,
+            parameter2=index,
+        )
+
+    async def set_thermostat_hold_mode(self, index: int, mode_value: int) -> None:
+        await self.execute_command(
+            Command.SET_THERMOSTAT_HOLD_MODE,
+            parameter1=mode_value,
+            parameter2=index,
+        )
+
+    async def set_thermostat_heat_setpoint_raw(
+        self, index: int, raw_temp: int
+    ) -> None:
+        """Set the heat setpoint by raw byte value (Omni temperature scale).
+
+        Use the same :func:`omni_temp_to_celsius` family of helpers from
+        :mod:`omni_pca.models` to convert from °C/°F if needed.
+        """
+        if not 0 <= raw_temp <= 0xFF:
+            raise ValueError(f"raw_temp must fit in a byte: {raw_temp}")
+        await self.execute_command(
+            Command.SET_THERMOSTAT_HEAT_SETPOINT,
+            parameter1=raw_temp,
+            parameter2=index,
+        )
+
+    async def set_thermostat_cool_setpoint_raw(
+        self, index: int, raw_temp: int
+    ) -> None:
+        if not 0 <= raw_temp <= 0xFF:
+            raise ValueError(f"raw_temp must fit in a byte: {raw_temp}")
+        await self.execute_command(
+            Command.SET_THERMOSTAT_COOL_SETPOINT,
+            parameter1=raw_temp,
+            parameter2=index,
+        )
+
+    # ---- helpers --------------------------------------------------------
+
+    async def _range_status[T](
+        self,
+        request_op: OmniLinkMessageType,
+        reply_op: OmniLinkMessageType,
+        start: int,
+        end: int,
+        parser: Callable[[bytes, int], list[T]],
+    ) -> dict[int, T]:
+        if not 1 <= start <= end <= 0xFFFF:
+            raise ValueError(
+                f"invalid range: start={start}, end={end} "
+                f"(must be 1..65535 with start<=end)"
+            )
+        # v1 has two payload forms (clsOLMsgRequestUnitStatus.cs:18-31):
+        # short (3-byte msg with 1-byte start+end) when both ≤ 255, long
+        # (5-byte msg with BE u16 start+end) otherwise. The panel picks
+        # the right reply format based on what it received.
+        if start <= 0xFF and end <= 0xFF:
+            payload = bytes([start, end])
+        else:
+            payload = bytes(
+                [(start >> 8) & 0xFF, start & 0xFF,
+                 (end >> 8) & 0xFF,   end & 0xFF]
+            )
+        reply = await self._conn.request(request_op, payload)
+        self._expect(reply.opcode, reply_op)
+        records = parser(reply.payload, start)
+        return {r.index: r for r in records}  # type: ignore[attr-defined]
+
+    @staticmethod
+    def _expect(actual: int, expected: OmniLinkMessageType) -> None:
+        if actual == int(OmniLinkMessageType.Nak):
+            raise OmniNakError(
+                f"panel NAK'd request expecting opcode {int(expected)} "
+                f"({expected.name})"
+            )
+        if actual != int(expected):
+            raise OmniProtocolError(
+                f"unexpected reply opcode {actual}, want {int(expected)} "
+                f"({expected.name})"
+            )
+
+
+class OmniNakError(RuntimeError):
+    """Panel returned the v1 Nak opcode (6) instead of the expected reply.
+
+    Thrown when a feature the panel doesn't support is requested — e.g.
+    ``RequestZoneExtendedStatus`` on firmware 2.12 NAKs because only the
+    non-extended ``RequestZoneStatus`` is supported.
+    """
+
+
+class OmniProtocolError(RuntimeError):
+    """Panel returned a reply opcode neither matching nor a NAK."""

src/omni_pca/v1/connection.py

@@ -0,0 +1,530 @@
+"""Async UDP connection to an Omni-Link controller speaking the v1 wire protocol.
+
+Differs from :class:`omni_pca.connection.OmniConnection` in three ways:
+
+1. **Transport**: UDP only. Each datagram carries exactly one outer Packet.
+2. **Outer packet type for messages**: ``OmniLinkMessage`` (0x10), not
+   ``OmniLink2Message`` (0x20). The 4-step handshake packets are identical.
+3. **Inner message format**: v1 ``Message`` with ``StartChar = 0x5A``
+   (NonAddressable) carrying a v1 opcode, not the v2 ``StartChar = 0x21``
+   carrying a v2 opcode.
+
+The handshake itself (ClientRequestNewSession → ControllerAckNewSession →
+ClientRequestSecureSession → ControllerAckSecureSession) and the AES-128
+session key derivation are protocol-agnostic and we reuse the same crypto
+primitives.
+
+Reference: clsOmniLinkConnection.cs (UDP path):
+    udpConnect      lines 1239-1295  open + queue ClientRequestNewSession
+    udpListen       lines 1298-1399  receive loop, dispatches replies
+    udpHandleRequestNewSession    lines 1401-1459 step 2 → step 3
+    udpHandleRequestSecureSession lines 1461-1487 step 4 → OnlineSecure
+    udpSend         lines 1514-1560  outer PacketType = OmniLinkMessage (16)
+    EncryptPacket   lines 372-401    same crypto as TCP
+
+Cross-references:
+    *Two non-public quirks* — Owner's-Manual-style writeup of the
+    session-key XOR mix and per-block sequence whitening that this
+    handshake relies on: https://hai-omni-pro-ii.warehack.ing/explanation/quirks/
+    *Zone & unit numbering* — explains why subsequent ``RequestUnitStatus``
+    calls need the long-form (BE u16) payload for unit indices > 255:
+    https://hai-omni-pro-ii.warehack.ing/explanation/zone-unit-numbering/
+"""
+
+from __future__ import annotations
+
+import asyncio
+import contextlib
+import logging
+from collections.abc import AsyncIterator
+from enum import IntEnum
+from types import TracebackType
+
+from ..crypto import (
+    BLOCK_SIZE,
+    decrypt_message_payload,
+    derive_session_key,
+    encrypt_message_payload,
+)
+from ..message import (
+    START_CHAR_V1_UNADDRESSED,
+    Message,
+    MessageCrcError,
+)
+from ..opcodes import OmniLinkMessageType, PacketType
+from ..packet import Packet
+
+_log = logging.getLogger(__name__)
+
+_DEFAULT_PORT = 4369
+_SESSION_ID_LEN = 5
+_PROTO_VERSION = (0x00, 0x01)
+_MAX_SEQ = 0xFFFF
+
+
+class ConnectionState(IntEnum):
+    DISCONNECTED = 0
+    CONNECTING = 1
+    NEW_SESSION = 2
+    SECURE = 3
+    ONLINE = 4
+
+
+class ConnectionError(OSError):  # noqa: A001 - intentional shadow at module scope
+    pass
+
+
+class HandshakeError(ConnectionError):
+    pass
+
+
+class InvalidEncryptionKeyError(HandshakeError):
+    """Controller answered ``ControllerSessionTerminated`` during handshake."""
+
+
+class ProtocolError(ValueError):
+    pass
+
+
+class RequestTimeoutError(TimeoutError):
+    pass
+
+
+class OmniConnectionV1:
+    """UDP + v1-wire-format connection to an Omni-Link controller."""
+
+    def __init__(
+        self,
+        host: str,
+        port: int = _DEFAULT_PORT,
+        controller_key: bytes = b"",
+        timeout: float = 5.0,
+        retry_count: int = 3,
+    ) -> None:
+        if len(controller_key) != 16:
+            raise ValueError(
+                f"controller_key must be 16 bytes, got {len(controller_key)}"
+            )
+        self._host = host
+        self._port = port
+        self._controller_key = bytes(controller_key)
+        self._default_timeout = timeout
+        self._retry_count = max(0, retry_count)
+
+        self._udp_transport: asyncio.DatagramTransport | None = None
+        self._udp_protocol: _OmniDatagramProtocol | None = None
+
+        self._state = ConnectionState.DISCONNECTED
+        self._session_id: bytes | None = None
+        self._session_key: bytes | None = None
+
+        # First wire packet uses seq=1; wraparound skips 0 (reserved for
+        # unsolicited inbound). See clsOmniLinkConnection.cs:1251 (UDP
+        # init pktSequence=1, then udpSend pre-increments).
+        self._next_seq: int = 1
+
+        self._pending: dict[int, asyncio.Future[Packet]] = {}
+        self._unsolicited_queue: asyncio.Queue[Message] = asyncio.Queue()
+
+        self._handshake_event: asyncio.Event = asyncio.Event()
+        self._handshake_packet: Packet | None = None
+        self._handshake_error: Exception | None = None
+
+        self._closed = False
+
+    @property
+    def state(self) -> ConnectionState:
+        return self._state
+
+    @property
+    def session_key(self) -> bytes | None:
+        return self._session_key
+
+    async def __aenter__(self) -> OmniConnectionV1:
+        await self.connect()
+        return self
+
+    async def __aexit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc: BaseException | None,
+        tb: TracebackType | None,
+    ) -> None:
+        await self.close()
+
+    async def connect(self) -> None:
+        if self._state is not ConnectionState.DISCONNECTED:
+            raise ConnectionError(
+                f"already connecting/connected (state={self._state})"
+            )
+        self._state = ConnectionState.CONNECTING
+        try:
+            loop = asyncio.get_running_loop()
+            self._udp_transport, self._udp_protocol = (
+                await loop.create_datagram_endpoint(
+                    lambda: _OmniDatagramProtocol(self),
+                    remote_addr=(self._host, self._port),
+                )
+            )
+        except (TimeoutError, OSError) as exc:
+            self._state = ConnectionState.DISCONNECTED
+            raise ConnectionError(f"failed to open UDP socket: {exc}") from exc
+
+        try:
+            await self._do_handshake()
+        except BaseException:
+            await self.close()
+            raise
+
+    async def close(self) -> None:
+        """Tear down. Politely terminate the panel session first.
+
+        Without ClientSessionTerminated the panel keeps our slot allocated
+        until its idle timeout — and rejects subsequent connect attempts
+        with ControllerCannotStartNewSession (0x07).
+        """
+        if self._closed:
+            return
+        self._closed = True
+        previous_state = self._state
+        self._state = ConnectionState.DISCONNECTED
+
+        if previous_state in (
+            ConnectionState.NEW_SESSION,
+            ConnectionState.SECURE,
+            ConnectionState.ONLINE,
+        ):
+            try:
+                term = Packet(
+                    seq=self._claim_seq(),
+                    type=PacketType.ClientSessionTerminated,
+                    data=b"",
+                )
+                self._write_packet(term)
+            except Exception as exc:  # noqa: BLE001 - close() must be idempotent
+                _log.debug("close: failed to send ClientSessionTerminated: %s", exc)
+
+        for fut in self._pending.values():
+            if not fut.done():
+                fut.set_exception(ConnectionError("connection closed"))
+        self._pending.clear()
+
+        if self._udp_transport is not None:
+            with contextlib.suppress(OSError):
+                self._udp_transport.close()
+            self._udp_transport = None
+            self._udp_protocol = None
+
+    # ---- public request API ---------------------------------------------
+
+    async def request(
+        self,
+        opcode: OmniLinkMessageType | int,
+        payload: bytes = b"",
+        timeout: float | None = None,
+    ) -> Message:
+        """Send a v1 request, await the matching reply, return the inner Message."""
+        if self._state is not ConnectionState.ONLINE:
+            raise ConnectionError(
+                f"cannot send request, connection state={self._state.name}"
+            )
+        message = Message(
+            start_char=START_CHAR_V1_UNADDRESSED,
+            data=bytes([int(opcode)]) + payload,
+        )
+        per_attempt_timeout = timeout if timeout is not None else self._default_timeout
+        max_attempts = 1 + self._retry_count
+        last_exc: Exception | None = None
+
+        for attempt in range(1, max_attempts + 1):
+            seq, fut = self._send_encrypted(message)
+            try:
+                reply_packet = await asyncio.wait_for(fut, per_attempt_timeout)
+            except TimeoutError as exc:
+                last_exc = exc
+                self._pending.pop(seq, None)
+                if attempt < max_attempts:
+                    _log.debug(
+                        "udp v1 retry %d/%d on opcode=%d seq=%d",
+                        attempt, max_attempts, int(opcode), seq,
+                    )
+                    continue
+                raise RequestTimeoutError(
+                    f"no v1 reply for opcode={int(opcode)} "
+                    f"after {max_attempts} attempt(s)"
+                ) from last_exc
+            return self._decode_inner(reply_packet)
+        raise RequestTimeoutError(
+            f"request loop exited without reply for opcode={int(opcode)}"
+        )
+
+    async def iter_streaming(
+        self,
+        initial_op: OmniLinkMessageType | int,
+        *,
+        ack_op: OmniLinkMessageType | int = OmniLinkMessageType.Ack,
+        end_op: OmniLinkMessageType | int = OmniLinkMessageType.EOD,
+        nak_op: OmniLinkMessageType | int = OmniLinkMessageType.Nak,
+        timeout: float | None = None,
+    ) -> AsyncIterator[Message]:
+        """Drive a v1 lock-step streaming download (UploadNames / UploadSetup / etc).
+
+        Sends ``initial_op`` (no payload), yields each ``ack_op``-elicited
+        reply, and stops when the panel sends ``end_op``. ``nak_op`` is
+        treated as an immediate end-of-stream — no exception (some
+        firmwares use NAK to signal "no records to upload").
+
+        Unlike :meth:`request` we don't retry on timeout — losing a
+        reply mid-stream desynchronises the conversation, so the right
+        answer is to surface the timeout and let the caller restart.
+        """
+        if self._state is not ConnectionState.ONLINE:
+            raise ConnectionError(
+                f"cannot stream, connection state={self._state.name}"
+            )
+        per_reply_timeout = timeout if timeout is not None else self._default_timeout
+
+        # Step 1: send the initial bare-opcode request, wait for first reply.
+        first_msg = Message(
+            start_char=START_CHAR_V1_UNADDRESSED,
+            data=bytes([int(initial_op)]),
+        )
+        seq, fut = self._send_encrypted(first_msg)
+        try:
+            reply_pkt = await asyncio.wait_for(fut, per_reply_timeout)
+        except TimeoutError as exc:
+            self._pending.pop(seq, None)
+            raise RequestTimeoutError(
+                f"no first reply to streaming opcode={int(initial_op)}"
+            ) from exc
+        reply = self._decode_inner(reply_pkt)
+
+        # Step 2..N: ack-and-receive until end_op or nak_op.
+        while True:
+            if reply.opcode == int(end_op) or reply.opcode == int(nak_op):
+                return
+            yield reply
+
+            ack_msg = Message(
+                start_char=START_CHAR_V1_UNADDRESSED,
+                data=bytes([int(ack_op)]),
+            )
+            seq, fut = self._send_encrypted(ack_msg)
+            try:
+                reply_pkt = await asyncio.wait_for(fut, per_reply_timeout)
+            except TimeoutError as exc:
+                self._pending.pop(seq, None)
+                raise RequestTimeoutError(
+                    f"no reply after streaming Ack (seq={seq})"
+                ) from exc
+            reply = self._decode_inner(reply_pkt)
+
+    def unsolicited(self) -> AsyncIterator[Message]:
+        queue = self._unsolicited_queue
+
+        async def _gen() -> AsyncIterator[Message]:
+            while True:
+                yield await queue.get()
+
+        return _gen()
+
+    # ---- handshake -------------------------------------------------------
+
+    async def _do_handshake(self) -> None:
+        # Step 1: empty ClientRequestNewSession.
+        self._state = ConnectionState.NEW_SESSION
+        step1 = Packet(
+            seq=self._claim_seq(),
+            type=PacketType.ClientRequestNewSession,
+            data=b"",
+        )
+        self._write_packet(step1)
+
+        # Step 2: ControllerAckNewSession (carries protocol version + SessionID).
+        ack1 = await self._await_handshake_packet()
+        if ack1.type is PacketType.ControllerCannotStartNewSession:
+            raise HandshakeError("controller cannot start new session (busy?)")
+        if ack1.type is not PacketType.ControllerAckNewSession:
+            raise HandshakeError(f"unexpected step-2 packet type {ack1.type.name}")
+        if len(ack1.data) < 7:
+            raise HandshakeError(
+                f"ControllerAckNewSession payload too short: {len(ack1.data)} bytes"
+            )
+        if (ack1.data[0], ack1.data[1]) != _PROTO_VERSION:
+            raise HandshakeError(
+                f"unsupported protocol version {ack1.data[0]:#04x}{ack1.data[1]:02x}"
+            )
+        self._session_id = bytes(ack1.data[2 : 2 + _SESSION_ID_LEN])
+        self._session_key = derive_session_key(self._controller_key, self._session_id)
+
+        # Step 3: encrypted ClientRequestSecureSession echoing SessionID.
+        self._state = ConnectionState.SECURE
+        step3_seq = self._claim_seq()
+        step3_ct = encrypt_message_payload(
+            self._session_id, step3_seq, self._session_key
+        )
+        step3 = Packet(
+            seq=step3_seq,
+            type=PacketType.ClientRequestSecureSession,
+            data=step3_ct,
+        )
+        self._write_packet(step3)
+
+        # Step 4: ControllerAckSecureSession (or termination).
+        ack2 = await self._await_handshake_packet()
+        if ack2.type is PacketType.ControllerSessionTerminated:
+            raise InvalidEncryptionKeyError(
+                "controller terminated session during handshake (wrong ControllerKey?)"
+            )
+        if ack2.type is not PacketType.ControllerAckSecureSession:
+            raise HandshakeError(
+                f"unexpected step-4 packet type {ack2.type.name}"
+            )
+        self._state = ConnectionState.ONLINE
+
+    async def _await_handshake_packet(self) -> Packet:
+        try:
+            await asyncio.wait_for(
+                self._handshake_event.wait(), self._default_timeout
+            )
+        except TimeoutError as exc:
+            raise HandshakeError(
+                "timeout waiting for controller handshake reply"
+            ) from exc
+        if self._handshake_error is not None:
+            err = self._handshake_error
+            self._handshake_error = None
+            raise err
+        pkt = self._handshake_packet
+        self._handshake_packet = None
+        self._handshake_event.clear()
+        if pkt is None:
+            raise HandshakeError("handshake event fired with no packet")
+        return pkt
+
+    # ---- send / receive helpers -----------------------------------------
+
+    def _claim_seq(self) -> int:
+        seq = self._next_seq
+        nxt = seq + 1
+        if nxt > _MAX_SEQ or nxt == 0:
+            nxt = 1
+        self._next_seq = nxt
+        return seq
+
+    def _send_encrypted(
+        self, inner: Message
+    ) -> tuple[int, asyncio.Future[Packet]]:
+        if self._session_key is None:
+            raise ConnectionError("no session key (handshake not complete)")
+        seq = self._claim_seq()
+        plaintext = inner.encode()
+        ciphertext = encrypt_message_payload(plaintext, seq, self._session_key)
+        # KEY DIFFERENCE FROM V2: outer type is OmniLinkMessage (0x10),
+        # not OmniLink2Message (0x20). See clsOmniLinkConnection.cs:1536.
+        pkt = Packet(seq=seq, type=PacketType.OmniLinkMessage, data=ciphertext)
+
+        loop = asyncio.get_running_loop()
+        fut: asyncio.Future[Packet] = loop.create_future()
+        self._pending[seq] = fut
+        self._write_packet(pkt)
+        return seq, fut
+
+    def _write_packet(self, pkt: Packet) -> None:
+        if self._udp_transport is None:
+            raise ConnectionError("transport not open")
+        wire = pkt.encode()
+        _log.debug(
+            "TX seq=%d type=%s len=%d", pkt.seq, pkt.type.name, len(pkt.data)
+        )
+        self._udp_transport.sendto(wire)
+
+    def _decode_inner(self, pkt: Packet) -> Message:
+        if self._session_key is None:
+            raise ConnectionError("no session key")
+        if not pkt.data:
+            raise ProtocolError("empty packet data")
+        plaintext = decrypt_message_payload(pkt.data, pkt.seq, self._session_key)
+        try:
+            return Message.decode(plaintext)
+        except MessageCrcError as exc:
+            raise ProtocolError(f"inner v1 message CRC mismatch: {exc}") from exc
+
+    # ---- inbound dispatch (called from the datagram protocol) -----------
+
+    def _dispatch(self, pkt: Packet) -> None:
+        if pkt.data is None:
+            pkt = Packet(seq=pkt.seq, type=pkt.type, data=b"")
+
+        if self._state in (ConnectionState.NEW_SESSION, ConnectionState.SECURE):
+            handshake_types = {
+                PacketType.ControllerAckNewSession,
+                PacketType.ControllerAckSecureSession,
+                PacketType.ControllerSessionTerminated,
+                PacketType.ControllerCannotStartNewSession,
+            }
+            if pkt.type in handshake_types:
+                self._handshake_packet = pkt
+                self._handshake_event.set()
+                return
+
+        if pkt.seq == 0:
+            if pkt.type is PacketType.OmniLinkMessage:
+                try:
+                    msg = self._decode_inner(pkt)
+                except (ProtocolError, ConnectionError) as exc:
+                    _log.warning(
+                        "dropping malformed unsolicited v1 packet: %s", exc
+                    )
+                    return
+                try:
+                    self._unsolicited_queue.put_nowait(msg)
+                except asyncio.QueueFull:  # pragma: no cover - unbounded queue
+                    _log.warning("unsolicited queue full; dropping message")
+            return
+
+        fut = self._pending.pop(pkt.seq, None)
+        if fut is None:
+            _log.debug(
+                "no waiter for seq=%d type=%s; dropping",
+                pkt.seq, pkt.type.name,
+            )
+            return
+        if pkt.type is PacketType.ControllerSessionTerminated:
+            fut.set_exception(ConnectionError("controller terminated session"))
+            return
+        if not fut.done():
+            fut.set_result(pkt)
+
+
+class _OmniDatagramProtocol(asyncio.DatagramProtocol):
+    """asyncio.DatagramProtocol bound to a single OmniConnectionV1.
+
+    Each datagram is one complete Packet. We decode it and hand it to the
+    connection's dispatcher; the dispatcher already knows how to sort
+    handshake / solicited / unsolicited paths.
+    """
+
+    def __init__(self, conn: OmniConnectionV1) -> None:
+        self._conn = conn
+
+    def connection_made(self, transport: asyncio.BaseTransport) -> None:
+        pass
+
+    def datagram_received(self, data: bytes, addr: tuple[str, int]) -> None:
+        try:
+            pkt = Packet.decode(data)
+        except Exception as exc:
+            _log.warning("dropping malformed UDP datagram: %s", exc)
+            return
+        try:
+            self._conn._dispatch(pkt)
+        except Exception:
+            _log.exception("UDP v1 dispatch crashed for seq=%d", pkt.seq)
+
+    def error_received(self, exc: Exception) -> None:
+        _log.warning("UDP v1 socket error: %s", exc)
+
+    def connection_lost(self, exc: Exception | None) -> None:
+        if exc is not None:
+            _log.warning("UDP v1 transport lost: %s", exc)

src/omni_pca/v1/messages.py

@@ -0,0 +1,322 @@
+"""V1 status-reply and name parsers.
+
+The v1 wire protocol's typed status messages (ZoneStatus, UnitStatus,
+ThermostatStatus, AuxiliaryStatus) carry one record per object in the
+range the client requested — but, unlike v2's ExtendedStatus, the records
+do **not** include the object number. The starting index is implicit
+from the request payload, and each record is at a fixed offset.
+
+This module supplies "block" parsers that take both the reply payload
+and the starting index, and produce a list of the existing top-level
+dataclasses (:class:`omni_pca.models.ZoneStatus` etc) so HA entity code
+doesn't need a v1-specific schema. The :func:`parse_v1_namedata` helper
+decodes the bulk-name-download replies streamed by ``UploadNames``.
+
+Per-record byte counts (verified against firmware 2.12 over UDP):
+    ZoneStatus        2 bytes per zone   (status, analog_loop)
+    UnitStatus        3 bytes per unit   (status, time_hi, time_lo)
+    ThermostatStatus  7 bytes per tstat  (status, current_t, heat_sp,
+                                          cool_sp, sys_mode, fan_mode,
+                                          hold_mode)
+    AuxiliaryStatus   4 bytes per aux    (relay, current, low_sp,
+                                          high_sp)
+
+Cross-references (HAI OmniPro II Installation Manual):
+    *INSTALLER SETUP → SETUP ZONES* (pca-re/docs/manuals/
+        installation_manual/04_INSTALLER_SETUP/) — the zone-type and
+        zone-options bits that determine what each ``ZoneStatus.raw_status``
+        byte's high nibble means come from this chapter.
+    *INSTALLER SETUP → SETUP TEMPERATURES* — same chapter, thermostat
+        enable/disable + thermostat type that drives whether
+        ``parse_v1_thermostat_status`` records are populated at all.
+    *APPENDIX C — ZONE AND UNIT MAPPING* (12_…) — what each record's
+        synthesized index *means* on the hardware side (e.g. unit 257+
+        = expansion-enclosure outputs, 393+ = panel flags).
+
+References:
+    clsOLMsgZoneStatus.cs        / clsOLMsgRequestZoneStatus.cs
+    clsOLMsgUnitStatus.cs        / clsOLMsgRequestUnitStatus.cs
+    clsOLMsgThermostatStatus.cs  / clsOLMsgRequestThermostatStatus.cs
+    clsOLMsgAuxiliaryStatus.cs   / clsOLMsgRequestAuxiliaryStatus.cs
+    clsOLMsgSystemStatus.cs      — v1 byte 14 = battery, then per-area Mode
+    clsOLMsgNameData.cs          — bulk name download record format
+    enuNameType.cs               — Zone=1 Unit=2 Button=3 Code=4 Area=5
+                                   Tstat=6 Message=7 UserSetting=8
+                                   AccessControlReader=9
+"""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from datetime import datetime
+from enum import IntEnum
+
+from ..models import (
+    AuxSensorStatus,
+    SystemStatus,
+    ThermostatStatus,
+    UnitStatus,
+    ZoneStatus,
+)
+
+_ZONE_RECORD_BYTES = 2
+_UNIT_RECORD_BYTES = 3
+_THERMOSTAT_RECORD_BYTES = 7
+_AUX_RECORD_BYTES = 4
+
+
+def parse_v1_zone_status(payload: bytes, start_index: int) -> list[ZoneStatus]:
+    """Parse a v1 ZoneStatus reply payload into per-zone dataclasses.
+
+    ``payload`` is the inner Message ``payload`` (data minus opcode byte);
+    its length must be a multiple of ``_ZONE_RECORD_BYTES``.
+    """
+    if len(payload) % _ZONE_RECORD_BYTES != 0:
+        raise ValueError(
+            f"v1 ZoneStatus payload length {len(payload)} not a multiple of "
+            f"{_ZONE_RECORD_BYTES}"
+        )
+    out: list[ZoneStatus] = []
+    for i, off in enumerate(range(0, len(payload), _ZONE_RECORD_BYTES)):
+        out.append(
+            ZoneStatus(
+                index=start_index + i,
+                raw_status=payload[off],
+                loop=payload[off + 1],
+            )
+        )
+    return out
+
+
+def parse_v1_unit_status(payload: bytes, start_index: int) -> list[UnitStatus]:
+    """Parse a v1 UnitStatus reply payload into per-unit dataclasses."""
+    if len(payload) % _UNIT_RECORD_BYTES != 0:
+        raise ValueError(
+            f"v1 UnitStatus payload length {len(payload)} not a multiple of "
+            f"{_UNIT_RECORD_BYTES}"
+        )
+    out: list[UnitStatus] = []
+    for i, off in enumerate(range(0, len(payload), _UNIT_RECORD_BYTES)):
+        out.append(
+            UnitStatus(
+                index=start_index + i,
+                state=payload[off],
+                time_remaining_secs=(payload[off + 1] << 8) | payload[off + 2],
+            )
+        )
+    return out
+
+
+def parse_v1_thermostat_status(
+    payload: bytes, start_index: int
+) -> list[ThermostatStatus]:
+    """Parse a v1 ThermostatStatus reply payload into per-tstat dataclasses.
+
+    The v1 record only carries 7 fields; the v2 dataclass has 4 more
+    (humidity, humidify_setpoint, dehumidify_setpoint, outdoor_temp,
+    horc_status). We zero-fill those — HA's climate platform doesn't
+    require them and an explicit 0 is more honest than a fake value.
+    """
+    if len(payload) % _THERMOSTAT_RECORD_BYTES != 0:
+        raise ValueError(
+            f"v1 ThermostatStatus payload length {len(payload)} not a multiple "
+            f"of {_THERMOSTAT_RECORD_BYTES}"
+        )
+    out: list[ThermostatStatus] = []
+    for i, off in enumerate(range(0, len(payload), _THERMOSTAT_RECORD_BYTES)):
+        out.append(
+            ThermostatStatus(
+                index=start_index + i,
+                status=payload[off],
+                temperature_raw=payload[off + 1],
+                heat_setpoint_raw=payload[off + 2],
+                cool_setpoint_raw=payload[off + 3],
+                system_mode=payload[off + 4],
+                fan_mode=payload[off + 5],
+                hold_mode=payload[off + 6],
+                humidity_raw=0,
+                humidify_setpoint_raw=0,
+                dehumidify_setpoint_raw=0,
+                outdoor_temperature_raw=0,
+                horc_status=0,
+            )
+        )
+    return out
+
+
+def parse_v1_aux_status(payload: bytes, start_index: int) -> list[AuxSensorStatus]:
+    """Parse a v1 AuxiliaryStatus reply payload into per-aux dataclasses."""
+    if len(payload) % _AUX_RECORD_BYTES != 0:
+        raise ValueError(
+            f"v1 AuxiliaryStatus payload length {len(payload)} not a multiple "
+            f"of {_AUX_RECORD_BYTES}"
+        )
+    out: list[AuxSensorStatus] = []
+    for i, off in enumerate(range(0, len(payload), _AUX_RECORD_BYTES)):
+        out.append(
+            AuxSensorStatus(
+                index=start_index + i,
+                output=payload[off],
+                value_raw=payload[off + 1],
+                low_raw=payload[off + 2],
+                high_raw=payload[off + 3],
+            )
+        )
+    return out
+
+
+def parse_v1_system_status(payload: bytes) -> SystemStatus:
+    """Parse a v1 SystemStatus reply.
+
+    Bytes 0..13 are byte-identical to v2 (time/date + sunrise/sunset +
+    battery). After byte 13 v1 carries per-area Mode bytes (1 byte each)
+    while v2 carries 2-byte alarm-flag pairs. We translate to the v2
+    dataclass's ``area_alarms`` shape by promoting each v1 mode byte to
+    a ``(mode, 0)`` tuple — that way HA code that already consumes
+    :class:`SystemStatus` keeps working without a v1-specific branch.
+    """
+    if len(payload) < 14:
+        raise ValueError(
+            f"v1 SystemStatus payload too short: {len(payload)} bytes"
+        )
+    time_valid = payload[0] != 0
+    year = payload[1]
+    month = payload[2]
+    day = payload[3]
+    # day_of_week = payload[4]
+    hour = payload[5]
+    minute = payload[6]
+    second = payload[7]
+    # daylight = payload[8]
+    sunrise_h = payload[9]
+    sunrise_m = payload[10]
+    sunset_h = payload[11]
+    sunset_m = payload[12]
+    battery = payload[13]
+
+    panel_time: datetime | None = None
+    if time_valid:
+        try:
+            panel_time = datetime(
+                year=2000 + year,
+                month=month,
+                day=day,
+                hour=hour,
+                minute=minute,
+                second=second,
+            )
+        except ValueError:
+            panel_time = None
+
+    # Promote each v1 per-area mode byte to a (mode, 0) pair so the v2
+    # area_alarms tuple shape carries the same information without a
+    # second dataclass.
+    mode_bytes = payload[14:]
+    area_alarms = tuple((b, 0) for b in mode_bytes)
+
+    return SystemStatus(
+        time_valid=time_valid,
+        panel_time=panel_time,
+        sunrise_hour=sunrise_h,
+        sunrise_minute=sunrise_m,
+        sunset_hour=sunset_h,
+        sunset_minute=sunset_m,
+        battery_reading=battery,
+        area_alarms=area_alarms,
+    )
+
+
+# ---- NameData --------------------------------------------------------------
+
+
+class NameType(IntEnum):
+    """Categories of named objects panels can stream over UploadNames.
+
+    Reference: enuNameType.cs.
+    """
+
+    ZONE = 1
+    UNIT = 2
+    BUTTON = 3
+    CODE = 4
+    AREA = 5
+    THERMOSTAT = 6
+    MESSAGE = 7
+    USER_SETTING = 8
+    ACCESS_CONTROL_READER = 9
+
+
+# Per-type max name length (clsCapOMNI_PRO_II.cs lines 55-71).
+# Other Omni models share these numbers — the few exceptions are
+# documented but not relevant for the panels we know speak v1+UDP.
+_NAME_TYPE_LENGTH: dict[int, int] = {
+    NameType.ZONE: 15,
+    NameType.UNIT: 12,
+    NameType.BUTTON: 12,
+    NameType.CODE: 12,
+    NameType.AREA: 12,
+    NameType.THERMOSTAT: 12,
+    NameType.MESSAGE: 15,
+    NameType.USER_SETTING: 15,
+    NameType.ACCESS_CONTROL_READER: 15,
+}
+
+
+@dataclass(frozen=True, slots=True)
+class NameRecord:
+    """One name record from a v1 ``NameData`` reply (opcode 11)."""
+
+    name_type: int
+    number: int
+    name: str
+
+    @property
+    def name_type_label(self) -> str:
+        try:
+            return NameType(self.name_type).name
+        except ValueError:
+            return f"Unknown({self.name_type})"
+
+
+def parse_v1_namedata(payload: bytes) -> NameRecord:
+    """Decode a v1 ``NameData`` payload (opcode 11) into a :class:`NameRecord`.
+
+    Wire layout (per clsOLMsgNameData.cs, MessageLength is the
+    full Data byte count including the opcode):
+
+    * One-byte form (NameNumber ≤ 255), MessageLength = 4 + NameTypeLen:
+      ``[opcode][type][num][name×L][\\0]`` — one trailing reserved byte.
+    * Two-byte form (NameNumber > 255), MessageLength = 5 + NameTypeLen:
+      ``[opcode][type][num_hi][num_lo][name×L][\\0]``.
+
+    ``payload`` here is the *inner* :attr:`Message.payload` (data minus
+    the leading opcode), so the lengths to compare against are L+3 and
+    L+4 respectively.
+    """
+    if len(payload) < 3:
+        raise ValueError(f"NameData payload too short: {len(payload)} bytes")
+    name_type = payload[0]
+    name_len = _NAME_TYPE_LENGTH.get(name_type)
+
+    if name_len is not None:
+        # Disambiguate by payload length against the expected forms.
+        one_byte_len = name_len + 3   # type + num + name + 1 trailing
+        two_byte_len = name_len + 4   # type + num_hi + num_lo + name + 1 trailing
+        if len(payload) >= two_byte_len:
+            number = (payload[1] << 8) | payload[2]
+            name_bytes = payload[3 : 3 + name_len]
+        elif len(payload) >= one_byte_len:
+            number = payload[1]
+            name_bytes = payload[2 : 2 + name_len]
+        else:
+            # Short payload — best-effort one-byte decode of whatever is left.
+            number = payload[1]
+            name_bytes = payload[2:]
+    else:
+        # Unknown type — can't tell the form. Assume one-byte and consume
+        # the rest; HA filters by known type anyway.
+        number = payload[1]
+        name_bytes = payload[2:]
+
+    name = name_bytes.split(b"\x00", 1)[0].decode("utf-8", errors="replace")
+    return NameRecord(name_type=name_type, number=number, name=name)

tests/ha_integration/conftest.py

@@ -64,6 +64,26 @@ def _short_scan_interval(monkeypatch: pytest.MonkeyPatch) -> None:
 @pytest.fixture
 def populated_state() -> MockState:
     """A lightly-populated mock state covering every entity platform."""
+    from omni_pca.programs import Days, Program, ProgramType
+    programs = {
+        slot: prog.encode_wire_bytes()
+        for slot, prog in {
+            12: Program(
+                slot=12, prog_type=int(ProgramType.TIMED),
+                cmd=3, hour=6, minute=0,
+                days=int(Days.MONDAY | Days.FRIDAY),
+            ),
+            42: Program(
+                slot=42, prog_type=int(ProgramType.TIMED),
+                cmd=4, hour=22, minute=30,
+                days=int(Days.SUNDAY),
+            ),
+            99: Program(
+                slot=99, prog_type=int(ProgramType.EVENT),
+                cmd=5, month=5, day=12,
+            ),
+        }.items()
+    }
     return MockState(
         zones={
             1: MockZoneState(name="FRONT_DOOR"),
@@ -84,6 +104,7 @@ def populated_state() -> MockState:
             1: MockButtonState(name="GOOD_MORNING"),
         },
         user_codes={1: 1234},
+        programs=programs,
     )
 
 

tests/ha_integration/test_pca_source.py

@@ -0,0 +1,207 @@
+"""HA-side integration: optional .pca file source for panel programs.
+
+When ``CONF_PCA_PATH`` is set in the entry data, the coordinator should
+parse the .pca file at that path (with ``CONF_PCA_KEY`` as the per-install
+key) and use those programs *instead* of streaming them over the wire.
+The wire-based discovery for everything else (zones, units, etc.) is
+unaffected.
+"""
+
+from __future__ import annotations
+
+from collections.abc import AsyncIterator
+from pathlib import Path
+from typing import Any
+
+import pytest
+from custom_components.omni_pca.const import (
+    CONF_CONTROLLER_KEY,
+    CONF_PCA_KEY,
+    CONF_PCA_PATH,
+    DOMAIN,
+)
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import CONF_HOST, CONF_PORT
+from homeassistant.core import HomeAssistant
+from pytest_homeassistant_custom_component.common import MockConfigEntry
+
+from .conftest import CONTROLLER_KEY_HEX
+
+LIVE_FIXTURE_PLAIN = Path(
+    "/home/kdm/home-auto/HAI/pca-re/extracted/Our_House.pca.plain"
+)
+
+
+def _materialize_encrypted_fixture(tmp_path: Path) -> tuple[Path, int]:
+    """Re-encrypt the plain fixture so parse_pca_file can decrypt it.
+
+    parse_pca_file always runs the XOR keystream. The plain dump bypasses
+    that, so we re-apply the keystream with KEY_EXPORT and write the
+    result to tmp_path. Returns (file_path, key) the coordinator should use.
+    """
+    from omni_pca.pca_file import KEY_EXPORT, decrypt_pca_bytes
+
+    plain = LIVE_FIXTURE_PLAIN.read_bytes()
+    # XOR is symmetric — "decrypt" of plain bytes with the export key
+    # produces a valid encrypted .pca that parse_pca_file can read back.
+    encrypted = decrypt_pca_bytes(plain, KEY_EXPORT)
+    fixture = tmp_path / "Test_House.pca"
+    fixture.write_bytes(encrypted)
+    return fixture, KEY_EXPORT
+
+
+@pytest.fixture
+async def configured_with_pca(
+    hass: HomeAssistant, panel: tuple[Any, str, int], tmp_path: Path
+) -> AsyncIterator[ConfigEntry]:
+    """Config entry pointing at a .pca file fixture for programs."""
+    if not LIVE_FIXTURE_PLAIN.is_file():
+        pytest.skip(f"live .pca fixture missing: {LIVE_FIXTURE_PLAIN}")
+
+    fixture_path, pca_key = _materialize_encrypted_fixture(tmp_path)
+
+    _, host, port = panel
+    entry = MockConfigEntry(
+        domain=DOMAIN,
+        data={
+            CONF_HOST: host,
+            CONF_PORT: port,
+            CONF_CONTROLLER_KEY: CONTROLLER_KEY_HEX,
+            CONF_PCA_PATH: str(fixture_path),
+            CONF_PCA_KEY: pca_key,
+        },
+        title=f"Mock Omni @ {host}:{port} (with .pca)",
+        unique_id=f"{host}:{port}",
+    )
+    entry.add_to_hass(hass)
+    assert await hass.config_entries.async_setup(entry.entry_id)
+    await hass.async_block_till_done()
+    try:
+        yield entry
+    finally:
+        if entry.entry_id in hass.data.get(DOMAIN, {}):
+            await hass.config_entries.async_unload(entry.entry_id)
+            await hass.async_block_till_done()
+
+
+async def test_pca_source_overrides_wire_programs(
+    hass: HomeAssistant, configured_with_pca: ConfigEntry
+) -> None:
+    """The fixture .pca has 330 defined programs (Phase 1 recon). The mock
+    panel only seeded 3 in conftest. When pca_path is set, the .pca count
+    wins — proving the coordinator routed through _discover_programs_from_pca,
+    not iter_programs."""
+    coordinator = hass.data[DOMAIN][configured_with_pca.entry_id]
+    assert len(coordinator.data.programs) == 330
+
+    # Sanity: the diagnostic sensor reflects the .pca count, not the mock seed.
+    sensors = [
+        s for s in hass.states.async_all("sensor")
+        if "panel_programs" in s.entity_id
+    ]
+    assert len(sensors) == 1
+    assert int(sensors[0].state) == 330
+
+
+async def test_mockpanel_from_pca_drives_full_ha_discovery(
+    hass: HomeAssistant, tmp_path: Path
+) -> None:
+    """End-to-end: build a MockPanel state straight from the live .pca,
+    then point HA at that mock with no other configuration. The
+    integration should discover *every* named zone / unit / button /
+    thermostat from the .pca via the normal wire path — no .pca config
+    needed, because the mock is now serving real data.
+    """
+    if not LIVE_FIXTURE_PLAIN.is_file():
+        pytest.skip(f"live .pca fixture missing: {LIVE_FIXTURE_PLAIN}")
+
+    from custom_components.omni_pca.const import CONF_CONTROLLER_KEY
+    from omni_pca.mock_panel import MockPanel, MockState
+    from omni_pca.pca_file import KEY_EXPORT, decrypt_pca_bytes
+
+    encrypted = decrypt_pca_bytes(LIVE_FIXTURE_PLAIN.read_bytes(), KEY_EXPORT)
+    state = MockState.from_pca(encrypted, key=KEY_EXPORT)
+    # Sanity — the from_pca seeding matches the live fixture's names.
+    assert len(state.zones) == 16
+    assert len(state.units) == 44
+
+    panel = MockPanel(
+        controller_key=bytes(range(16)),  # matches CONTROLLER_KEY_HEX
+        state=state,
+    )
+    async with panel.serve(host="127.0.0.1") as (host, port):
+        entry = MockConfigEntry(
+            domain=DOMAIN,
+            data={
+                CONF_HOST: host,
+                CONF_PORT: port,
+                CONF_CONTROLLER_KEY: CONTROLLER_KEY_HEX,
+            },
+            title=f"Mock Omni @ {host}:{port} (from .pca)",
+            unique_id=f"{host}:{port}",
+        )
+        entry.add_to_hass(hass)
+        assert await hass.config_entries.async_setup(entry.entry_id)
+        await hass.async_block_till_done()
+        try:
+            coordinator = hass.data[DOMAIN][entry.entry_id]
+            # All 16 zones surfaced through normal wire discovery.
+            assert len(coordinator.data.zones) == 16
+            # Units, buttons, thermostats too.
+            assert len(coordinator.data.units) == 44
+            assert len(coordinator.data.buttons) == 16
+            assert len(coordinator.data.thermostats) == 2
+            # And the programs sensor reflects 330 from wire iter_programs.
+            assert len(coordinator.data.programs) == 330
+            # Zone types flowed from SetupData → mock → wire Properties
+            # reply → HA's ZoneProperties parser.
+            zone_types_by_slot = {
+                idx: z.zone_type for idx, z in coordinator.data.zones.items()
+            }
+            assert zone_types_by_slot[1] == 0x00     # GARAGE ENTRY → EntryExit
+            assert zone_types_by_slot[3] == 0x01     # BACK DOOR → Perimeter
+            assert zone_types_by_slot[7] == 0x03     # LIVINGROOM MOT → AwayInt
+            assert zone_types_by_slot[11] == 0x55    # OUTSIDE TEMP → outdoor temp
+            # Per-zone area assignments — single-area install, every
+            # zone surfaces as area=1 through the wire Properties reply.
+            for idx, z in coordinator.data.zones.items():
+                assert z.area == 1, f"zone {idx} expected area=1 got {z.area}"
+            # Areas: the live fixture has no user-assigned area names
+            # but the v2 client's list_area_names now falls back to
+            # "Area 1".."Area 8". HA's _discover_areas then enumerates
+            # each, walks the Properties reply, and lands the configured
+            # entry/exit delays from SetupData.
+            assert 1 in coordinator.data.areas
+            assert coordinator.data.areas[1].entry_delay == 60
+            assert coordinator.data.areas[1].exit_delay == 90
+        finally:
+            await hass.config_entries.async_unload(entry.entry_id)
+            await hass.async_block_till_done()
+
+
+async def test_pca_path_validation_rejects_missing_file(
+    hass: HomeAssistant, tmp_path: Path
+) -> None:
+    """The config-flow validator returns ``pca_not_found`` for an absent
+    file. We exercise the helper directly to avoid spinning a full mock
+    panel just for the validation branch."""
+    from custom_components.omni_pca.config_flow import OmniConfigFlow
+
+    flow = OmniConfigFlow()
+    flow.hass = hass
+    err = await flow._validate_pca(str(tmp_path / "does-not-exist.pca"), 0)
+    assert err == "pca_not_found"
+
+
+async def test_pca_path_validation_rejects_garbage(
+    hass: HomeAssistant, tmp_path: Path
+) -> None:
+    """A file that doesn't decode as a .pca returns ``pca_decode_failed``."""
+    from custom_components.omni_pca.config_flow import OmniConfigFlow
+
+    garbage = tmp_path / "garbage.pca"
+    garbage.write_bytes(b"not a real pca file" * 1000)
+    flow = OmniConfigFlow()
+    flow.hass = hass
+    err = await flow._validate_pca(str(garbage), 0)
+    assert err == "pca_decode_failed"

tests/ha_integration/test_program_websocket.py

@@ -0,0 +1,673 @@
+"""HA websocket commands for the program viewer.
+
+Tests run against the live HA test harness so they exercise:
+  * websocket command registration during integration setup
+  * filter / pagination / search of the program list
+  * detail rendering for compact-form + clausal-chain slots
+  * fire-program over the wire to the mock panel
+
+Each test uses the already-seeded ``configured_panel`` fixture from
+conftest.py plus the test-harness-provided ``hass_ws_client``.
+"""
+
+from __future__ import annotations
+
+import pytest
+from custom_components.omni_pca.const import DOMAIN
+from homeassistant.core import HomeAssistant
+
+from omni_pca.commands import Command
+from omni_pca.programs import Days, Program, ProgramType
+
+
+@pytest.fixture
+def seeded_programs() -> dict[int, Program]:
+    """A small set of programs covering the main shapes the viewer renders.
+
+    Three compact-form TIMED programs and one clausal chain — enough
+    to exercise summary rendering, the chain group-and-render path, and
+    the filter/search dimensions.
+    """
+    return {
+        12: Program(
+            slot=12, prog_type=int(ProgramType.TIMED),
+            cmd=int(Command.UNIT_ON), pr2=1,  # unit 1 in fixture
+            hour=6, minute=0, days=int(Days.MONDAY | Days.FRIDAY),
+        ),
+        42: Program(
+            slot=42, prog_type=int(ProgramType.TIMED),
+            cmd=int(Command.UNIT_ON), pr2=2,  # unit 2
+            hour=22, minute=30, days=int(Days.SUNDAY),
+        ),
+        99: Program(
+            slot=99, prog_type=int(ProgramType.EVENT),
+            cmd=int(Command.UNIT_ON), pr2=1,
+            # WHEN zone 1 changes to NOT_READY (event_id = 0x0401)
+            month=0x04, day=0x01,
+        ),
+        # A clausal chain spanning slots 200..203: WHEN zone 1 not-ready
+        # AND IF unit 1 ON THEN turn ON unit 2 AND turn OFF unit 1.
+        200: Program(
+            slot=200, prog_type=int(ProgramType.WHEN),
+            # event_id = 0x0401 (zone 1 not-ready) packed in month/day
+            month=0x04, day=0x01,
+        ),
+        201: Program(
+            slot=201, prog_type=int(ProgramType.AND),
+            # Traditional AND: family byte 0x0A = CTRL+ON, instance 1.
+            # and_family = cond & 0xFF, and_instance = (cond2>>8) & 0xFF.
+            cond=0x000A, cond2=0x0100,
+        ),
+        202: Program(
+            slot=202, prog_type=int(ProgramType.THEN),
+            cmd=int(Command.UNIT_ON), pr2=2,
+        ),
+        203: Program(
+            slot=203, prog_type=int(ProgramType.THEN),
+            cmd=int(Command.UNIT_OFF), pr2=1,
+        ),
+    }
+
+
+@pytest.fixture
+def populated_state(seeded_programs):
+    """Override the conftest fixture to inject our test programs."""
+    from omni_pca.mock_panel import (
+        MockAreaState,
+        MockButtonState,
+        MockState,
+        MockThermostatState,
+        MockUnitState,
+        MockZoneState,
+    )
+
+    return MockState(
+        zones={
+            1: MockZoneState(name="FRONT_DOOR"),
+            2: MockZoneState(name="GARAGE_ENTRY"),
+            10: MockZoneState(name="LIVING_MOTION"),
+        },
+        units={
+            1: MockUnitState(name="LIVING_LAMP"),
+            2: MockUnitState(name="KITCHEN_OVERHEAD"),
+        },
+        areas={1: MockAreaState(name="MAIN")},
+        thermostats={1: MockThermostatState(name="LIVING_ROOM")},
+        buttons={1: MockButtonState(name="GOOD_MORNING")},
+        user_codes={1: 1234},
+        programs={
+            slot: p.encode_wire_bytes() for slot, p in seeded_programs.items()
+        },
+    )
+
+
+async def test_ws_list_programs_returns_summaries(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """The list command returns rendered summary tokens for every
+    program the coordinator discovered."""
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/list",
+        "entry_id": configured_panel.entry_id,
+    })
+    response = await client.receive_json()
+    assert response["success"] is True
+    result = response["result"]
+    # 3 compact-form programs (12, 42, 99) + 1 clausal chain (head at
+    # slot 200, spanning 200..203). The chain renders as a single row.
+    assert result["total"] == 4
+    assert result["filtered_total"] == 4
+    rows_by_slot = {row["slot"]: row for row in result["programs"]}
+    assert rows_by_slot.keys() == {12, 42, 99, 200}
+    assert rows_by_slot[200]["kind"] == "chain"
+    assert rows_by_slot[12]["kind"] == "compact"
+
+
+async def test_ws_list_programs_filter_by_trigger_type(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """``trigger_types=["TIMED"]`` filters out the EVENT-typed row."""
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/list",
+        "entry_id": configured_panel.entry_id,
+        "trigger_types": ["TIMED"],
+    })
+    response = await client.receive_json()
+    assert response["success"] is True
+    result = response["result"]
+    assert result["filtered_total"] == 2  # only the two TIMED rows
+    assert {row["slot"] for row in result["programs"]} == {12, 42}
+
+
+async def test_ws_list_programs_filter_by_referenced_entity(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """``references_entity="unit:2"`` returns only programs that mention unit 2."""
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/list",
+        "entry_id": configured_panel.entry_id,
+        "references_entity": "unit:2",
+    })
+    response = await client.receive_json()
+    result = response["result"]
+    # Slot 42 ("Turn ON KITCHEN_OVERHEAD" = unit 2) plus the seeded chain
+    # at slot 200 (action: Turn ON unit 2) both reference unit:2.
+    assert result["filtered_total"] == 2
+    slots = {r["slot"] for r in result["programs"]}
+    assert slots == {42, 200}
+
+
+async def test_ws_list_programs_search_substring(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """Search is a case-insensitive substring match on the rendered text."""
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/list",
+        "entry_id": configured_panel.entry_id,
+        "search": "kitchen",
+    })
+    response = await client.receive_json()
+    result = response["result"]
+    # Slot 42 ("Turn ON KITCHEN_OVERHEAD" — truncated to 12 chars on
+    # wire = "KITCHEN_OVER") matches. The chain at slot 200 also has
+    # an action against unit 2 which renders with the same truncated
+    # name, so it matches too.
+    assert result["filtered_total"] == 2
+    slots = {r["slot"] for r in result["programs"]}
+    assert slots == {42, 200}
+
+
+async def test_ws_list_programs_pagination(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/list",
+        "entry_id": configured_panel.entry_id,
+        "limit": 2,
+        "offset": 1,
+    })
+    response = await client.receive_json()
+    result = response["result"]
+    # 4 list rows total: 3 compact + 1 chain head.
+    assert result["filtered_total"] == 4
+    assert len(result["programs"]) == 2
+    assert [row["slot"] for row in result["programs"]] == [42, 99]
+
+
+async def test_ws_get_program_returns_full_token_stream(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """Detail of a single slot returns the full structured-English tokens."""
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/get",
+        "entry_id": configured_panel.entry_id,
+        "slot": 42,
+    })
+    response = await client.receive_json()
+    assert response["success"] is True
+    result = response["result"]
+    assert result["slot"] == 42
+    assert result["kind"] == "compact"
+    assert result["trigger_type"] == "TIMED"
+    text = "".join(
+        tok["t"] for tok in result["tokens"] if tok.get("k") != "newline"
+    )
+    assert "Turn ON" in text
+    # Unit names cap at 12 bytes on Omni Pro II (lenUnitName), so the
+    # 16-char "KITCHEN_OVERHEAD" lands on the wire as "KITCHEN_OVER".
+    assert "KITCHEN_OVER" in text
+
+
+async def test_ws_get_program_returns_raw_fields_for_editor(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """The detail response includes a 'fields' dict carrying raw Program
+    integer values, so the editor can seed forms from actual data rather
+    than defaults. Round-trip: get → fields → write back should preserve
+    every byte (idempotent under no-op edits)."""
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/get",
+        "entry_id": configured_panel.entry_id,
+        "slot": 42,
+    })
+    response = await client.receive_json()
+    assert response["success"] is True
+    fields = response["result"]["fields"]
+    # Slot 42 is the seeded TIMED 22:30 Sunday → Turn ON unit 2 program.
+    assert fields["prog_type"] == 1
+    assert fields["hour"] == 22
+    assert fields["minute"] == 30
+    assert fields["days"] == int(Days.SUNDAY)
+    assert fields["cmd"] == int(Command.UNIT_ON)
+    assert fields["pr2"] == 2
+
+    # Round-trip: write those same fields back; nothing should change.
+    coordinator = hass.data[DOMAIN][configured_panel.entry_id]
+    before = coordinator.data.programs[42]
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/write",
+        "entry_id": configured_panel.entry_id,
+        "slot": 42,
+        "program": fields,
+    })
+    write_response = await client.receive_json()
+    assert write_response["success"] is True
+    after = coordinator.data.programs[42]
+    assert before.encode_wire_bytes() == after.encode_wire_bytes()
+
+
+async def test_ws_get_program_missing_slot_returns_error(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/get",
+        "entry_id": configured_panel.entry_id,
+        "slot": 500,  # not seeded
+    })
+    response = await client.receive_json()
+    assert response["success"] is False
+    assert response["error"]["code"] == "not_found"
+
+
+async def test_ws_list_programs_unknown_entry_id(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """Bad entry_id returns a structured ``not_found`` error, not a crash."""
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/list",
+        "entry_id": "does-not-exist",
+    })
+    response = await client.receive_json()
+    assert response["success"] is False
+    assert response["error"]["code"] == "not_found"
+
+
+async def test_ws_fire_program_executes_command(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """Fire sends Command.EXECUTE_PROGRAM over the wire — the mock acks."""
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/fire",
+        "entry_id": configured_panel.entry_id,
+        "slot": 42,
+    })
+    response = await client.receive_json()
+    assert response["success"] is True
+    assert response["result"] == {"slot": 42, "fired": True}
+
+
+async def test_ws_clear_program_writes_zero_body(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """Clear erases a slot end-to-end: ws command → DownloadProgram on
+    the wire → mock state loses the slot → coordinator drops it from
+    its in-memory map."""
+    coordinator = hass.data[DOMAIN][configured_panel.entry_id]
+    assert 42 in coordinator.data.programs
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/clear",
+        "entry_id": configured_panel.entry_id,
+        "slot": 42,
+    })
+    response = await client.receive_json()
+    assert response["success"] is True
+    assert response["result"] == {"slot": 42, "cleared": True}
+    # The coordinator's view drops the slot immediately so a follow-up
+    # list reflects the deletion without waiting for the next poll.
+    assert 42 not in coordinator.data.programs
+
+
+async def test_ws_clone_program_copies_to_empty_slot(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """Cloning slot 12 to slot 500 lands a copy at the target with the
+    right fields and leaves the source untouched."""
+    coordinator = hass.data[DOMAIN][configured_panel.entry_id]
+    assert 12 in coordinator.data.programs
+    assert 500 not in coordinator.data.programs
+    source = coordinator.data.programs[12]
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/clone",
+        "entry_id": configured_panel.entry_id,
+        "source_slot": 12,
+        "target_slot": 500,
+    })
+    response = await client.receive_json()
+    assert response["success"] is True
+    assert response["result"] == {
+        "source_slot": 12, "target_slot": 500, "cloned": True,
+    }
+    # New program landed at the target with re-stamped slot.
+    cloned = coordinator.data.programs[500]
+    assert cloned.slot == 500
+    assert cloned.prog_type == source.prog_type
+    assert cloned.cmd == source.cmd
+    assert cloned.pr2 == source.pr2
+    # Source remains.
+    assert 12 in coordinator.data.programs
+
+
+async def test_ws_clone_program_rejects_same_slot(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/clone",
+        "entry_id": configured_panel.entry_id,
+        "source_slot": 12,
+        "target_slot": 12,
+    })
+    response = await client.receive_json()
+    assert response["success"] is False
+    assert response["error"]["code"] == "invalid"
+
+
+async def test_ws_clone_program_rejects_missing_source(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """Cloning from a slot that has no program is a structured error."""
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/clone",
+        "entry_id": configured_panel.entry_id,
+        "source_slot": 999,  # not seeded
+        "target_slot": 100,
+    })
+    response = await client.receive_json()
+    assert response["success"] is False
+    assert response["error"]["code"] == "not_found"
+
+
+async def test_ws_write_program_creates_new_slot(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """Writing a Program dict to an empty slot lands a new program."""
+    coordinator = hass.data[DOMAIN][configured_panel.entry_id]
+    assert 700 not in coordinator.data.programs
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/write",
+        "entry_id": configured_panel.entry_id,
+        "slot": 700,
+        "program": {
+            "prog_type": 1,        # TIMED
+            "cmd": int(Command.UNIT_ON),
+            "pr2": 2,
+            "hour": 7, "minute": 30,
+            "days": int(Days.SATURDAY | Days.SUNDAY),
+        },
+    })
+    response = await client.receive_json()
+    assert response["success"] is True
+    assert response["result"] == {"slot": 700, "written": True}
+    new_program = coordinator.data.programs[700]
+    assert new_program.slot == 700
+    assert new_program.cmd == int(Command.UNIT_ON)
+    assert new_program.pr2 == 2
+    assert new_program.hour == 7 and new_program.minute == 30
+
+
+async def test_ws_write_program_overwrites_existing_slot(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """Writing to a slot that has a program replaces the existing one."""
+    coordinator = hass.data[DOMAIN][configured_panel.entry_id]
+    # Slot 12 is seeded (TIMED hour=6 minute=0). Rewrite it.
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/write",
+        "entry_id": configured_panel.entry_id,
+        "slot": 12,
+        "program": {
+            "prog_type": 1,
+            "cmd": int(Command.UNIT_OFF),
+            "pr2": 99,
+            "hour": 23, "minute": 45, "days": int(Days.MONDAY),
+        },
+    })
+    response = await client.receive_json()
+    assert response["success"] is True
+    updated = coordinator.data.programs[12]
+    assert updated.cmd == int(Command.UNIT_OFF)
+    assert updated.pr2 == 99
+    assert updated.hour == 23 and updated.minute == 45
+
+
+async def test_ws_write_program_validates_payload(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """Bad program dict (out-of-range field) returns structured error."""
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/write",
+        "entry_id": configured_panel.entry_id,
+        "slot": 12,
+        "program": {
+            "prog_type": 99,  # invalid (max 10)
+            "cmd": 1, "pr2": 1, "hour": 6, "minute": 0,
+        },
+    })
+    response = await client.receive_json()
+    assert response["success"] is False
+    assert response["error"]["code"] == "invalid"
+
+
+async def test_ws_list_objects_returns_named_buckets(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """objects/list returns zones/units/areas/thermostats/buttons in
+    slot-sorted order with their HA-discovered names."""
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/objects/list",
+        "entry_id": configured_panel.entry_id,
+    })
+    response = await client.receive_json()
+    assert response["success"] is True
+    result = response["result"]
+    assert {"zones", "units", "areas", "thermostats", "buttons"} <= result.keys()
+    # Fixture has units at indexes 1, 2 (LIVING_LAMP, KITCHEN_OVERHEAD-truncated).
+    units = result["units"]
+    assert len(units) == 2
+    assert units[0]["index"] == 1
+    assert units[0]["name"] == "LIVING_LAMP"
+    # And zones come back with their fixture names too.
+    zones_by_idx = {z["index"]: z["name"] for z in result["zones"]}
+    assert zones_by_idx[1] == "FRONT_DOOR"
+
+
+async def test_ws_get_chain_returns_member_fields(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """Chain detail response includes a chain_members array with each
+    member's role + raw fields, so the editor can render an editable
+    row per slot."""
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/get",
+        "entry_id": configured_panel.entry_id,
+        "slot": 200,  # head of the seeded chain
+    })
+    response = await client.receive_json()
+    assert response["success"] is True
+    result = response["result"]
+    assert result["kind"] == "chain"
+    members = result["chain_members"]
+    roles = [m["role"] for m in members]
+    assert roles == ["head", "condition", "action", "action"]
+    # Head carries the event_id (zone 1 NOT_READY = 0x0401).
+    head_fields = members[0]["fields"]
+    assert head_fields["prog_type"] == int(ProgramType.WHEN)
+    assert head_fields["month"] == 0x04
+    assert head_fields["day"] == 0x01
+    # Condition is a Traditional AND record with family CTRL+ON, unit 1.
+    cond_fields = members[1]["fields"]
+    assert cond_fields["prog_type"] == int(ProgramType.AND)
+    assert cond_fields["cond"] == 0x000A
+    assert cond_fields["cond2"] == 0x0100
+
+
+async def test_ws_chain_write_replaces_in_place(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """Same-length rewrite leaves the chain footprint unchanged but
+    updates every member's bytes."""
+    client = await hass_ws_client(hass)
+    coordinator = hass.data[DOMAIN][configured_panel.entry_id]
+    # Existing chain: slots 200..203.
+    assert {200, 201, 202, 203} <= coordinator.data.programs.keys()
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/chain/write",
+        "entry_id": configured_panel.entry_id,
+        "head_slot": 200,
+        "head": {
+            "prog_type": int(ProgramType.WHEN),
+            "month": 0x04, "day": 0x02,        # zone 1 trouble (id 0x0402)
+        },
+        "conditions": [
+            # AND IF unit 2 ON (family 0x0A, instance 2)
+            {"prog_type": int(ProgramType.AND),
+             "cond": 0x000A, "cond2": 0x0200},
+        ],
+        "actions": [
+            {"prog_type": int(ProgramType.THEN),
+             "cmd": int(Command.UNIT_OFF), "pr2": 2},
+            {"prog_type": int(ProgramType.THEN),
+             "cmd": int(Command.UNIT_ON), "pr2": 1},
+        ],
+    })
+    response = await client.receive_json()
+    assert response["success"] is True
+    assert response["result"]["written_slots"] == [200, 201, 202, 203]
+    assert response["result"]["cleared_slots"] == []
+    # Coordinator state reflects the new bytes.
+    assert coordinator.data.programs[200].day == 0x02
+    assert coordinator.data.programs[201].cond2 == 0x0200
+    assert coordinator.data.programs[202].cmd == int(Command.UNIT_OFF)
+
+
+async def test_ws_chain_write_shrinks_and_clears(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """Shorter rewrite clears the trailing old chain slots."""
+    client = await hass_ws_client(hass)
+    coordinator = hass.data[DOMAIN][configured_panel.entry_id]
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/chain/write",
+        "entry_id": configured_panel.entry_id,
+        "head_slot": 200,
+        "head": {
+            "prog_type": int(ProgramType.WHEN),
+            "month": 0x04, "day": 0x01,
+        },
+        # No conditions, one action — chain shrinks from 4 slots to 2.
+        "conditions": [],
+        "actions": [
+            {"prog_type": int(ProgramType.THEN),
+             "cmd": int(Command.UNIT_ON), "pr2": 1},
+        ],
+    })
+    response = await client.receive_json()
+    assert response["success"] is True
+    assert response["result"]["written_slots"] == [200, 201]
+    assert sorted(response["result"]["cleared_slots"]) == [202, 203]
+    # Cleared slots are gone from the coordinator's view.
+    assert 202 not in coordinator.data.programs
+    assert 203 not in coordinator.data.programs
+
+
+async def test_ws_chain_write_refuses_to_trample(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """Expanding a chain into a slot that already holds another program
+    is refused — protects against accidental data loss."""
+    client = await hass_ws_client(hass)
+    coordinator = hass.data[DOMAIN][configured_panel.entry_id]
+    # Seed a sentinel program at slot 204 (right after the chain) so an
+    # expand attempt collides.
+    coordinator.data.programs[204] = Program(
+        slot=204, prog_type=int(ProgramType.TIMED),
+        cmd=int(Command.UNIT_ON), pr2=1,
+        hour=12, minute=0, days=int(Days.MONDAY),
+    )
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/chain/write",
+        "entry_id": configured_panel.entry_id,
+        "head_slot": 200,
+        "head": {"prog_type": int(ProgramType.WHEN),
+                 "month": 0x04, "day": 0x01},
+        "conditions": [
+            {"prog_type": int(ProgramType.AND),
+             "cond": 0x000A, "cond2": 0x0100},
+            # Adding a second condition pushes the chain from 4 to 5
+            # slots → slot 204 collision.
+            {"prog_type": int(ProgramType.AND),
+             "cond": 0x000A, "cond2": 0x0200},
+        ],
+        "actions": [
+            {"prog_type": int(ProgramType.THEN),
+             "cmd": int(Command.UNIT_ON), "pr2": 2},
+            {"prog_type": int(ProgramType.THEN),
+             "cmd": int(Command.UNIT_OFF), "pr2": 1},
+        ],
+    })
+    response = await client.receive_json()
+    assert response["success"] is False
+    assert response["error"]["code"] == "invalid"
+    # The sentinel program is untouched.
+    assert coordinator.data.programs[204].cmd == int(Command.UNIT_ON)
+
+
+async def test_ws_chain_write_rejects_zero_actions(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """A chain with no THEN actions is meaningless — refuse it."""
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/chain/write",
+        "entry_id": configured_panel.entry_id,
+        "head_slot": 200,
+        "head": {"prog_type": int(ProgramType.WHEN),
+                 "month": 0x04, "day": 0x01},
+        "conditions": [],
+        "actions": [],
+    })
+    response = await client.receive_json()
+    assert response["success"] is False
+    assert response["error"]["code"] == "invalid"
+
+
+async def test_ws_list_programs_live_state_overlay_zone(
+    hass: HomeAssistant, configured_panel, hass_ws_client
+) -> None:
+    """Summary tokens carry live-state badges on REF tokens.
+
+    The EVENT program at slot 99 references zone 1; the coordinator's
+    ``zone_status[1]`` carries SECURE / NOT READY etc. and we expect
+    that label to flow through to the token's ``s`` field.
+    """
+    client = await hass_ws_client(hass)
+    await client.send_json_auto_id({
+        "type": "omni_pca/programs/list",
+        "entry_id": configured_panel.entry_id,
+    })
+    response = await client.receive_json()
+    rows_by_slot = {row["slot"]: row for row in response["result"]["programs"]}
+    event_row = rows_by_slot[99]
+    refs = [tok for tok in event_row["summary"] if tok.get("k") == "ref"]
+    # At least one REF should be the zone-1 reference with a state label.
+    zone_refs = [r for r in refs if r.get("ek") == "zone" and r.get("ei") == 1]
+    assert zone_refs, f"expected zone:1 ref in {refs!r}"
+    assert "s" in zone_refs[0]  # state badge populated

tests/ha_integration/test_setup.py

@@ -78,6 +78,35 @@ async def test_button_entity_for_panel_button(
     assert len(states) == 1
 
 
+async def test_programs_sensor_reflects_seeded_panel(
+    hass: HomeAssistant, configured_panel
+) -> None:
+    """The diagnostic Panel Programs sensor enumerates discovered programs.
+
+    Mock seed has 3 programs at slots 12 / 42 / 99 (see
+    :func:`populated_state`); after discovery the coordinator stashes them
+    on ``OmniData.programs`` and the sensor surfaces a count + per-slot
+    summary attribute.
+    """
+    programs_states = [
+        s for s in hass.states.async_all("sensor")
+        if s.entity_id.endswith("_panel_programs") or "panel_programs" in s.entity_id
+    ]
+    assert len(programs_states) == 1, (
+        f"expected one panel_programs sensor, got {[s.entity_id for s in programs_states]}"
+    )
+    s = programs_states[0]
+    assert int(s.state) == 3
+    summaries = s.attributes["programs"]
+    assert [p["slot"] for p in summaries] == [12, 42, 99]
+    # Spot-check the per-record fields landed in summary form.
+    by_slot = {p["slot"]: p for p in summaries}
+    assert by_slot[12]["type"] == "TIMED"
+    assert by_slot[12]["hour"] == 6 and by_slot[12]["minute"] == 0
+    assert by_slot[99]["type"] == "EVENT"
+    assert by_slot[99]["month"] == 5 and by_slot[99]["day"] == 12
+
+
 async def test_event_entity_per_panel(
     hass: HomeAssistant, configured_panel
 ) -> None:

tests/test_e2e_program_echo.py

@@ -0,0 +1,666 @@
+"""End-to-end wire round-trip: client → MockPanel → program decoded.
+
+Seeds the MockPanel with known :class:`Program` records, exercises
+both wire dialects, and asserts the decoded result equals what was
+seeded.
+
+* v2 (TCP, request/response per slot): drives ``UploadProgram`` once
+  per slot. Proves the per-program framing (2-byte BE ProgramNumber +
+  14-byte body wrapped in a ``ProgramData`` reply).
+* v1 (UDP, streaming): drives bare ``UploadPrograms``, ack-walks the
+  streamed ``ProgramData`` replies to ``EOD``. Proves the streaming
+  lock-step matches the panel's behaviour described in
+  ``clsHAC.OL1ReadConfig`` (clsHAC.cs:4403, 4538-4540, 4642-4651).
+"""
+
+from __future__ import annotations
+
+import struct
+
+import pytest
+
+from omni_pca.connection import OmniConnection
+from omni_pca.mock_panel import MockPanel, MockState
+from omni_pca.opcodes import OmniLink2MessageType, OmniLinkMessageType
+from omni_pca.programs import Days, Program, ProgramType
+from omni_pca.v1 import OmniClientV1
+
+CONTROLLER_KEY = bytes.fromhex("000102030405060708090a0b0c0d0e0f")
+
+
+def _seeded() -> Program:
+    """A TIMED program with non-trivial fields in every slot.
+
+    Picks values that would fail if any byte got swapped or zeroed.
+    """
+    return Program(
+        slot=42,
+        prog_type=int(ProgramType.TIMED),
+        cond=0x8D09,
+        cond2=0x9B09,
+        cmd=0x44,
+        par=3,
+        pr2=0x0100,
+        month=8,
+        day=12,
+        days=int(Days.MONDAY | Days.TUESDAY | Days.WEDNESDAY | Days.THURSDAY | Days.FRIDAY),
+        hour=7,
+        minute=15,
+    )
+
+
+@pytest.mark.asyncio
+async def test_v2_upload_program_round_trips_through_mock_panel() -> None:
+    seeded = _seeded()
+    panel = MockPanel(
+        controller_key=CONTROLLER_KEY,
+        state=MockState(programs={42: seeded.encode_wire_bytes()}),
+    )
+    async with (
+        panel.serve(transport="tcp") as (host, port),
+        OmniConnection(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as conn,
+    ):
+        # UploadProgram request body: [number_hi, number_lo, request_reason]
+        payload = struct.pack(">HB", 42, 0)
+        reply = await conn.request(OmniLink2MessageType.UploadProgram, payload)
+        assert reply.opcode == int(OmniLink2MessageType.ProgramData)
+
+        # Reply payload: [number_hi, number_lo] + 14-byte body
+        assert len(reply.payload) == 2 + 14
+        echoed_number = (reply.payload[0] << 8) | reply.payload[1]
+        assert echoed_number == 42
+
+        decoded = Program.from_wire_bytes(reply.payload[2:], slot=42)
+
+    # Compare field-by-field — slot was passed through unchanged.
+    assert decoded.prog_type == seeded.prog_type
+    assert decoded.cond == seeded.cond
+    assert decoded.cond2 == seeded.cond2
+    assert decoded.cmd == seeded.cmd
+    assert decoded.par == seeded.par
+    assert decoded.pr2 == seeded.pr2
+    assert decoded.month == seeded.month
+    assert decoded.day == seeded.day
+    assert decoded.days == seeded.days
+    assert decoded.hour == seeded.hour
+    assert decoded.minute == seeded.minute
+
+
+@pytest.mark.asyncio
+async def test_v2_upload_program_empty_slot_returns_zero_body() -> None:
+    """An unseeded slot should respond with 14 zero bytes (matches real panel)."""
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=MockState())
+    async with (
+        panel.serve(transport="tcp") as (host, port),
+        OmniConnection(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as conn,
+    ):
+        payload = struct.pack(">HB", 99, 0)
+        reply = await conn.request(OmniLink2MessageType.UploadProgram, payload)
+        assert reply.opcode == int(OmniLink2MessageType.ProgramData)
+        assert reply.payload == bytes([0, 99]) + b"\x00" * 14
+        decoded = Program.from_wire_bytes(reply.payload[2:], slot=99)
+        assert decoded.is_empty()
+
+
+@pytest.mark.asyncio
+async def test_v2_upload_program_event_type_no_swap_on_wire() -> None:
+    """EVENT-typed programs must NOT swap Mon/Day on the wire (clsOLMsgProgramData
+    doesn't apply the file-layout swap)."""
+    seeded = Program(
+        slot=7,
+        prog_type=int(ProgramType.EVENT),
+        cond=0x0C04,
+        cmd=int(OmniLink2MessageType.Ack),  # arbitrary; just non-zero
+        month=5,    # in WIRE layout: byte 9 = month, byte 10 = day
+        day=12,
+    )
+    panel = MockPanel(
+        controller_key=CONTROLLER_KEY,
+        state=MockState(programs={7: seeded.encode_wire_bytes()}),
+    )
+    async with (
+        panel.serve(transport="tcp") as (host, port),
+        OmniConnection(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as conn,
+    ):
+        payload = struct.pack(">HB", 7, 0)
+        reply = await conn.request(OmniLink2MessageType.UploadProgram, payload)
+        body = reply.payload[2:]
+        # Byte 9 should be 5 (month), byte 10 should be 12 (day) -- the
+        # exact wire-layout encoding of an EVENT program with month=5,
+        # day=12. If the mock swapped (treating it as file layout), we'd
+        # see byte 9 = 12 and byte 10 = 5.
+        assert body[9] == 5
+        assert body[10] == 12
+        # And the decoded values match what we seeded.
+        decoded = Program.from_wire_bytes(body, slot=7)
+        assert decoded.month == 5
+        assert decoded.day == 12
+
+
+# ---- v1 streaming -------------------------------------------------------
+
+
+def _decode_v1_programdata(payload: bytes) -> tuple[int, Program]:
+    """Strip the BE ProgramNumber prefix from a v1 ``ProgramData`` payload,
+    decode the 14-byte body. Mirrors the v2 helper inline above."""
+    assert len(payload) >= 2 + 14
+    slot = (payload[0] << 8) | payload[1]
+    return slot, Program.from_wire_bytes(payload[2 : 2 + 14], slot=slot)
+
+
+@pytest.mark.asyncio
+async def test_v1_upload_programs_streams_all_seeded_slots() -> None:
+    """The v1 ``UploadPrograms`` opcode is bare; the panel streams one
+    ``ProgramData`` reply per defined slot, each followed by a client Ack,
+    terminated by ``EOD``. Order is by ascending slot index — which is
+    what we feed back from ``sorted(state.programs)``."""
+    seeded = {
+        12: Program(slot=12, prog_type=int(ProgramType.TIMED), cmd=3, hour=6, minute=0,
+                    days=int(Days.MONDAY | Days.FRIDAY)),
+        42: Program(slot=42, prog_type=int(ProgramType.TIMED), cond=0x8D09, cond2=0x9B09,
+                    cmd=0x44, par=3, pr2=0x0100, month=8, day=12,
+                    days=int(Days.MONDAY), hour=7, minute=15),
+        99: Program(slot=99, prog_type=int(ProgramType.EVENT), cmd=5, month=5, day=12),
+    }
+    panel = MockPanel(
+        controller_key=CONTROLLER_KEY,
+        state=MockState(programs={s: p.encode_wire_bytes() for s, p in seeded.items()}),
+    )
+    async with panel.serve(transport="udp") as (host, port):
+        async with OmniClientV1(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            received: dict[int, Program] = {}
+            async for reply in c.connection.iter_streaming(
+                OmniLinkMessageType.UploadPrograms
+            ):
+                assert reply.opcode == int(OmniLinkMessageType.ProgramData)
+                slot, prog = _decode_v1_programdata(reply.payload)
+                received[slot] = prog
+
+    assert set(received) == set(seeded)
+    for slot, want in seeded.items():
+        got = received[slot]
+        # Field-by-field — same checks as the v2 test, plus a slot equality.
+        assert got.slot == slot
+        assert got.prog_type == want.prog_type
+        assert got.cond == want.cond
+        assert got.cond2 == want.cond2
+        assert got.cmd == want.cmd
+        assert got.par == want.par
+        assert got.pr2 == want.pr2
+        assert got.month == want.month
+        assert got.day == want.day
+        assert got.days == want.days
+        assert got.hour == want.hour
+        assert got.minute == want.minute
+
+
+@pytest.mark.asyncio
+async def test_v1_upload_programs_empty_state_yields_immediate_eod() -> None:
+    """No programs defined → the streaming iterator terminates without
+    yielding anything (the panel jumps straight to EOD)."""
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=MockState())
+    async with panel.serve(transport="udp") as (host, port):
+        async with OmniClientV1(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            replies = [
+                r async for r in c.connection.iter_streaming(
+                    OmniLinkMessageType.UploadPrograms
+                )
+            ]
+    assert replies == []
+
+
+# ---- v2 iter_programs (reason=1 "next defined" iteration) ---------------
+
+
+@pytest.mark.asyncio
+async def test_v2_upload_program_reason1_returns_next_defined_slot() -> None:
+    """``request_reason=1`` should return the lowest defined slot strictly
+    greater than the requested number — the C# panel uses this to iterate
+    (clsHAC.cs:5331)."""
+    seeded = {
+        5: Program(slot=5, prog_type=int(ProgramType.TIMED), cmd=3),
+        12: Program(slot=12, prog_type=int(ProgramType.TIMED), cmd=3),
+        99: Program(slot=99, prog_type=int(ProgramType.EVENT), cmd=5),
+    }
+    panel = MockPanel(
+        controller_key=CONTROLLER_KEY,
+        state=MockState(programs={s: p.encode_wire_bytes() for s, p in seeded.items()}),
+    )
+    async with (
+        panel.serve(transport="tcp") as (host, port),
+        OmniConnection(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as conn,
+    ):
+        # Seed slot 0 with reason=1 → first defined slot (5).
+        reply = await conn.request(
+            OmniLink2MessageType.UploadProgram, struct.pack(">HB", 0, 1)
+        )
+        assert reply.opcode == int(OmniLink2MessageType.ProgramData)
+        assert (reply.payload[0] << 8) | reply.payload[1] == 5
+
+        # From slot 5 with reason=1 → slot 12.
+        reply = await conn.request(
+            OmniLink2MessageType.UploadProgram, struct.pack(">HB", 5, 1)
+        )
+        assert (reply.payload[0] << 8) | reply.payload[1] == 12
+
+        # From slot 12 with reason=1 → slot 99.
+        reply = await conn.request(
+            OmniLink2MessageType.UploadProgram, struct.pack(">HB", 12, 1)
+        )
+        assert (reply.payload[0] << 8) | reply.payload[1] == 99
+
+        # From slot 99 with reason=1 → EOD (no more).
+        reply = await conn.request(
+            OmniLink2MessageType.UploadProgram, struct.pack(">HB", 99, 1)
+        )
+        assert reply.opcode == int(OmniLink2MessageType.EOD)
+
+
+@pytest.mark.asyncio
+async def test_v2_client_iter_programs_enumerates_all_seeded() -> None:
+    """High-level OmniClient.iter_programs() drives the reason=1 iteration
+    and yields decoded Program records in slot-ascending order."""
+    from omni_pca.client import OmniClient
+    seeded = {
+        12: Program(slot=12, prog_type=int(ProgramType.TIMED), cmd=3, hour=6, minute=0,
+                    days=int(Days.MONDAY | Days.FRIDAY)),
+        42: Program(slot=42, prog_type=int(ProgramType.TIMED), cond=0x8D09, cond2=0x9B09,
+                    cmd=0x44, par=3, pr2=0x0100, month=8, day=12,
+                    days=int(Days.MONDAY), hour=7, minute=15),
+        99: Program(slot=99, prog_type=int(ProgramType.EVENT), cmd=5, month=5, day=12),
+    }
+    panel = MockPanel(
+        controller_key=CONTROLLER_KEY,
+        state=MockState(programs={s: p.encode_wire_bytes() for s, p in seeded.items()}),
+    )
+    async with panel.serve(transport="tcp") as (host, port):
+        async with OmniClient(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            received = [p async for p in c.iter_programs()]
+
+    assert [p.slot for p in received] == [12, 42, 99]
+    for got, want in zip(received, seeded.values()):
+        assert got.prog_type == want.prog_type
+        assert got.cmd == want.cmd
+        assert got.hour == want.hour
+        assert got.minute == want.minute
+
+
+@pytest.mark.asyncio
+async def test_v2_client_iter_programs_empty_state_yields_nothing() -> None:
+    from omni_pca.client import OmniClient
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=MockState())
+    async with panel.serve(transport="tcp") as (host, port):
+        async with OmniClient(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            received = [p async for p in c.iter_programs()]
+    assert received == []
+
+
+# ---- v1 client iter_programs (high-level wrapper over iter_streaming) ----
+
+
+@pytest.mark.asyncio
+async def test_mockstate_from_pca_serves_real_panel_programs() -> None:
+    """End-to-end: build MockState from the live .pca, drive iter_programs
+    over v2 wire, decode every yielded Program. This exercises the full
+    file → mock → wire → decoder pipeline with real on-disk data.
+
+    The fixture is the same plain-text dump tests/test_pca_file.py uses;
+    we re-encrypt with KEY_EXPORT on the fly so parse_pca_file accepts it.
+    """
+    from pathlib import Path
+
+    from omni_pca.client import OmniClient
+    from omni_pca.mock_panel import MockState
+    from omni_pca.pca_file import KEY_EXPORT, decrypt_pca_bytes
+
+    plain = Path("/home/kdm/home-auto/HAI/pca-re/extracted/Our_House.pca.plain")
+    if not plain.is_file():
+        pytest.skip(f"live fixture missing: {plain}")
+    encrypted = decrypt_pca_bytes(plain.read_bytes(), KEY_EXPORT)
+
+    state = MockState.from_pca(encrypted, key=KEY_EXPORT)
+    # SystemInfo fields were populated from the .pca header.
+    assert state.model_byte == 16          # OMNI_PRO_II
+    assert state.firmware_major == 2
+    # Programs: 330 defined per Phase 1 recon.
+    assert len(state.programs) == 330
+    # Names: per the live fixture's reconnaissance dump.
+    assert len(state.zones) == 16
+    assert len(state.units) == 44
+    assert len(state.buttons) == 16
+    assert len(state.thermostats) == 2
+    # Areas: this fixture has no user-assigned names but
+    # NumAreasUsed=1, so MockState.from_pca synthesizes a single
+    # unnamed area 1 with the .pca's entry/exit delays.
+    assert len(state.areas) == 1
+    assert state.areas[1].name == ""
+    assert state.areas[1].entry_delay == 60  # configured in PC Access
+    assert state.areas[1].exit_delay == 90
+    assert state.areas[1].enabled is True
+
+    # Sanity-check the raw PcaAccount scalars too.
+    from omni_pca.pca_file import parse_pca_file
+    acct = parse_pca_file(encrypted, key=KEY_EXPORT)
+    assert acct.temp_format == 1       # 1 = Fahrenheit
+    assert acct.num_areas_used == 1
+    assert acct.area_entry_delays[1] == 60
+    assert acct.area_exit_delays[1] == 90
+
+    # Area-1 boolean flags (real homeowner-configured values):
+    #   EntryChime    OFF   (no keypad chime on entry)
+    #   QuickArm      ON    (arming without a code)
+    #   AutoBypass    OFF
+    #   AllOnForAlarm ON
+    #   TroubleBeep   OFF
+    #   PerimeterChime OFF  (homeowner disabled)
+    #   AudibleExitDelay ON
+    assert acct.area_entry_chime[1] is False
+    assert acct.area_quick_arm[1] is True
+    assert acct.area_auto_bypass[1] is False
+    assert acct.area_all_on_for_alarm[1] is True
+    assert acct.area_trouble_beep[1] is False
+    assert acct.area_perimeter_chime[1] is False
+    assert acct.area_audible_exit_delay[1] is True
+    # And the values flowed through MockState.
+    assert state.areas[1].quick_arm is True
+    assert state.areas[1].entry_chime is False
+    assert state.areas[1].perimeter_chime is False
+
+    # DST configuration — US default (Mar/2nd Sun, Nov/1st Sun).
+    assert acct.dst_start_month == 3
+    assert acct.dst_start_week == 2
+    assert acct.dst_end_month == 11
+    assert acct.dst_end_week == 1
+
+    # Unit type derivation — X10 sub-types resolved via HouseCodeFormat.
+    # HouseCode 1 in this fixture is HLC (5), so units 1..16 split into
+    # HLCRoom (Number-1 ≡ 0 mod 8) and HLCLoad. HouseCodes 2..16 are
+    # Extended (1), so units 17..256 are enuOL2UnitType.Extended (2).
+    assert acct.unit_types[1] == 5       # ROOM ONE → HLCRoom
+    assert acct.unit_types[2] == 6       # FRONT PORCH → HLCLoad
+    assert acct.unit_types[9] == 5       # next room-slot → HLCRoom
+    assert acct.unit_types[17] == 2      # HouseCode 2 Extended → Extended
+    assert acct.unit_types[257] == 13    # ExpEnc → Output
+    assert acct.unit_types[385] == 13    # VoltOut → Output
+    assert acct.unit_types[393] == 12    # FlagOut → Flag
+    # Unit type/areas threaded into MockUnitState — first 16 units are
+    # under HouseCode 1 (HLC).
+    assert state.units[1].unit_type == 5  # ROOM ONE → HLCRoom
+    # Area was 0xff (panel default = "all") → normalized to 0x01 in mock.
+    assert state.units[1].areas == 0x01
+
+    # HouseCodes.EnableExtCode raw bytes.
+    assert acct.house_code_formats[1] == 5    # HLC
+    assert all(v == 1 for v in (
+        acct.house_code_formats[i] for i in range(2, 17)
+    ))  # all Extended
+
+    # TimeClock 1: outdoor-lights schedule On 22:30 → Off 06:00 daily.
+    tc1_on, tc1_off = acct.time_clocks[0], acct.time_clocks[1]
+    assert (tc1_on.hour, tc1_on.minute) == (22, 30)
+    assert tc1_on.days == 0xFE  # every day (bits 1..7)
+    assert (tc1_off.hour, tc1_off.minute) == (6, 0)
+
+    # Installer / PCAccess codes (PII; both repr=False).
+    assert 0 < acct.installer_code <= 0xFFFF
+    assert 0 < acct.pc_access_code <= 0xFFFF
+    assert acct.enable_pc_access is True
+    r = repr(acct)
+    assert "installer_code" not in r
+    assert "pc_access_code" not in r
+
+    # Geographic configuration — northern-US install on Pacific time.
+    assert 25 <= acct.latitude <= 49      # continental US lat range
+    assert 67 <= acct.longitude <= 125    # continental US long range
+    assert acct.time_zone in (5, 6, 7, 8, 9, 10)  # US zones EST..AKST
+
+    # Telephony / dialer scalars + the panel's own number (PII).
+    assert acct.telephone_access is True
+    assert acct.rings_before_answer == 8
+    assert acct.my_phone_number != ""        # a real number is set
+    assert "my_phone_number" not in repr(acct)  # but never in repr
+    assert acct.callback_number == "-"       # blank-number sentinel
+
+    # Misc panel scalars.
+    assert acct.house_code == 1              # base X10 house code A
+    assert acct.num_thermostats == 64        # OMNI_PRO_II thermostat cap
+    assert acct.flash_light_num == 2         # X10 unit flashed on alarm
+    assert acct.verify_fire_alarms is True
+    assert acct.enable_console_emg is True
+    assert acct.high_security is False
+
+    # DCM dialer block — not configured for monitoring in this fixture
+    # ("-" blank phone numbers) but the per-zone alarm-code table and
+    # emergency codes are still populated.
+    assert acct.dcm.phone_number_1 == "-"
+    assert "phone_number_1" not in repr(acct.dcm)  # PII repr=False
+    assert len(acct.dcm.zone_alarm_codes) == 176
+    assert len(acct.dcm.emergency_codes) == 8
+    assert all(0 <= c <= 255 for c in acct.dcm.emergency_codes)
+
+    # Codes: PINs decode as BE u16. PII fields not in repr().
+    assert acct.code_authority[1] == 1   # COMPUTER → User
+    assert acct.code_authority[4] == 2   # Debra → Manager
+    assert acct.code_authority[5] == 3   # Cage → Installer
+    assert 0 <= acct.code_pins[1] <= 0xFFFF
+    assert "code_pins" not in repr(acct)
+    assert state.zones[1].name == "GARAGE ENTRY"
+    assert state.units[1].name == "ROOM ONE"
+    assert state.thermostats[1].name == "DOWNSTAIRS"
+    # Zone types from SetupData — door zones are EntryExit (0) or
+    # Perimeter (1), motion sensors are AwayInt (3), the OUTSIDE TEMP
+    # zone is Extended_Range_OutdoorTemp (0x55).
+    assert state.zones[1].zone_type == 0x00     # GARAGE ENTRY → EntryExit
+    assert state.zones[2].zone_type == 0x00     # FRONT DOOR → EntryExit
+    assert state.zones[3].zone_type == 0x01     # BACK DOOR → Perimeter
+    assert state.zones[7].zone_type == 0x03     # LIVINGROOM MOT → AwayInt
+    assert state.zones[11].zone_type == 0x55    # OUTSIDE TEMP → outdoor temp
+    # Zone area assignments from SetupData — single-area install, all
+    # zones in area 1.
+    for slot, zone in state.zones.items():
+        assert zone.area == 1, f"slot {slot} expected area=1 got {zone.area}"
+    # ZoneOptions — every zone carries the panel-default 4 in this fixture.
+    for slot, zone in state.zones.items():
+        assert zone.options == 4, f"slot {slot} expected options=4 got {zone.options}"
+    assert all(v == 4 for v in acct.zone_options.values())
+    assert len(acct.zone_options) == 176
+
+    # Thermostat type + area from SetupData. The two named thermostats
+    # (DOWNSTAIRS, UPSTAIRS) are type 1; areas were 0xFF (all) →
+    # normalised to area 1 only in MockState.
+    assert acct.thermostat_types[1] == 1
+    assert acct.thermostat_types[2] == 1
+    assert len(acct.thermostat_types) == 64
+    assert state.thermostats[1].thermostat_type == 1
+    assert state.thermostats[1].areas == 0x01
+
+    # Four scalars sandwiched around the thermostat arrays.
+    assert acct.time_adj == 30              # panel default
+    assert 1 <= acct.alarm_reset_time <= 30  # in valid standard range
+    assert acct.arming_confirmation is False
+    assert acct.two_way_audio is False
+
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=state)
+    async with panel.serve(transport="tcp") as (host, port):
+        async with OmniClient(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            decoded = [p async for p in c.iter_programs()]
+
+    # Every defined slot streamed back, in ascending slot order.
+    assert len(decoded) == 330
+    assert [p.slot for p in decoded] == sorted(state.programs)
+    # Spot check: every decoded record has a known ProgramType.
+    for p in decoded:
+        assert p.prog_type in {1, 2, 3}  # TIMED / EVENT / YEARLY from this fixture
+
+
+# ---- DownloadProgram writeback ------------------------------------------
+
+
+@pytest.mark.asyncio
+async def test_v2_download_program_writes_slot() -> None:
+    """Writing a Program via DownloadProgram lands it in MockState; a
+    subsequent UploadProgram returns the same bytes — proving the
+    full read-then-write-then-read loop works against the mock."""
+    from omni_pca.client import OmniClient
+    from omni_pca.commands import Command
+
+    target = Program(
+        slot=42, prog_type=int(ProgramType.TIMED),
+        cmd=int(Command.UNIT_ON), pr2=7,
+        hour=22, minute=30,
+        days=int(Days.MONDAY | Days.WEDNESDAY | Days.FRIDAY),
+    )
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=MockState())
+    async with panel.serve(transport="tcp") as (host, port):
+        async with OmniClient(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0,
+        ) as c:
+            # Slot 42 starts empty.
+            assert 42 not in panel.state.programs
+            await c.download_program(42, target)
+            # Now the mock's state should carry the wire bytes.
+            assert 42 in panel.state.programs
+            assert panel.state.programs[42] == target.encode_wire_bytes()
+            # And a read-back via iter_programs should yield the same program.
+            programs = [p async for p in c.iter_programs()]
+    assert len(programs) == 1
+    p = programs[0]
+    assert p.slot == 42
+    assert p.prog_type == int(ProgramType.TIMED)
+    assert p.cmd == int(Command.UNIT_ON)
+    assert p.pr2 == 7
+    assert p.hour == 22 and p.minute == 30
+    assert p.days == int(Days.MONDAY | Days.WEDNESDAY | Days.FRIDAY)
+
+
+@pytest.mark.asyncio
+async def test_v2_download_program_overwrites_existing_slot() -> None:
+    """Writing to a slot that already has a program replaces it."""
+    from omni_pca.client import OmniClient
+    from omni_pca.commands import Command
+
+    original = Program(
+        slot=10, prog_type=int(ProgramType.TIMED),
+        cmd=int(Command.UNIT_OFF), pr2=1,
+        hour=6, minute=0, days=int(Days.MONDAY),
+    )
+    replacement = Program(
+        slot=10, prog_type=int(ProgramType.TIMED),
+        cmd=int(Command.UNIT_ON), pr2=99,
+        hour=22, minute=0, days=int(Days.SUNDAY),
+    )
+    panel = MockPanel(
+        controller_key=CONTROLLER_KEY,
+        state=MockState(programs={10: original.encode_wire_bytes()}),
+    )
+    async with panel.serve(transport="tcp") as (host, port):
+        async with OmniClient(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0,
+        ) as c:
+            await c.download_program(10, replacement)
+    assert panel.state.programs[10] == replacement.encode_wire_bytes()
+
+
+@pytest.mark.asyncio
+async def test_v2_clear_program_removes_slot() -> None:
+    """``clear_program`` writes an all-zero body, which the mock treats
+    as deletion — subsequent reads see the slot as undefined."""
+    from omni_pca.client import OmniClient
+    from omni_pca.commands import Command
+
+    seed = Program(
+        slot=5, prog_type=int(ProgramType.TIMED),
+        cmd=int(Command.UNIT_ON), pr2=1,
+        hour=6, minute=0, days=int(Days.MONDAY),
+    )
+    panel = MockPanel(
+        controller_key=CONTROLLER_KEY,
+        state=MockState(programs={5: seed.encode_wire_bytes()}),
+    )
+    async with panel.serve(transport="tcp") as (host, port):
+        async with OmniClient(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0,
+        ) as c:
+            await c.clear_program(5)
+    assert 5 not in panel.state.programs
+
+
+@pytest.mark.asyncio
+async def test_v2_download_program_rejects_out_of_range_slot() -> None:
+    """Client-side range check catches bad slot before sending."""
+    from omni_pca.client import OmniClient
+
+    p = Program(slot=1, prog_type=int(ProgramType.TIMED))
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=MockState())
+    async with panel.serve(transport="tcp") as (host, port):
+        async with OmniClient(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0,
+        ) as c:
+            with pytest.raises(ValueError, match="out of range"):
+                await c.download_program(0, p)
+            with pytest.raises(ValueError, match="out of range"):
+                await c.download_program(1501, p)
+
+
+@pytest.mark.asyncio
+async def test_v1_download_program_raises_not_implemented() -> None:
+    """v1 has no single-slot write; the client raises a structured
+    NotImplementedError so HA can surface the limitation."""
+    from omni_pca.v1 import OmniClientV1
+
+    p = Program(slot=1, prog_type=int(ProgramType.TIMED))
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=MockState())
+    async with panel.serve(transport="udp") as (host, port):
+        async with OmniClientV1(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0,
+        ) as c:
+            with pytest.raises(NotImplementedError, match="v1 panels"):
+                await c.download_program(1, p)
+
+
+@pytest.mark.asyncio
+async def test_v1_client_iter_programs_enumerates_all_seeded() -> None:
+    seeded = {
+        12: Program(slot=12, prog_type=int(ProgramType.TIMED), cmd=3, hour=6, minute=0,
+                    days=int(Days.MONDAY | Days.FRIDAY)),
+        42: Program(slot=42, prog_type=int(ProgramType.TIMED), cond=0x8D09, cond2=0x9B09,
+                    cmd=0x44, par=3, pr2=0x0100, month=8, day=12,
+                    days=int(Days.MONDAY), hour=7, minute=15),
+        99: Program(slot=99, prog_type=int(ProgramType.EVENT), cmd=5, month=5, day=12),
+    }
+    panel = MockPanel(
+        controller_key=CONTROLLER_KEY,
+        state=MockState(programs={s: p.encode_wire_bytes() for s, p in seeded.items()}),
+    )
+    async with panel.serve(transport="udp") as (host, port):
+        async with OmniClientV1(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            received = [p async for p in c.iter_programs()]
+
+    assert [p.slot for p in received] == [12, 42, 99]
+    for got, want in zip(received, seeded.values()):
+        assert got.prog_type == want.prog_type
+        assert got.cmd == want.cmd
+        assert got.cond == want.cond
+        assert got.cond2 == want.cond2
+        assert got.hour == want.hour
+        assert got.minute == want.minute

tests/test_e2e_udp.py

@@ -0,0 +1,152 @@
+"""End-to-end: OmniClient ↔ MockPanel over UDP.
+
+Mirrors test_e2e_client_mock.py but with ``transport='udp'`` on both
+sides. The protocol/encryption/handshake bytes are identical to TCP;
+this proves only the transport layer change is sound.
+"""
+
+from __future__ import annotations
+
+import asyncio
+import secrets
+
+import pytest
+
+from omni_pca.client import ObjectType, OmniClient
+from omni_pca.commands import CommandFailedError
+from omni_pca.connection import ConnectionState, HandshakeError, OmniConnection
+from omni_pca.events import UnitStateChanged
+from omni_pca.mock_panel import (
+    MockAreaState,
+    MockButtonState,
+    MockPanel,
+    MockState,
+    MockThermostatState,
+    MockUnitState,
+    MockZoneState,
+)
+from omni_pca.models import (
+    AreaStatus,
+    SecurityMode,
+)
+from omni_pca.opcodes import OmniLink2MessageType
+
+CONTROLLER_KEY = bytes.fromhex("6ba7b4e9b4656de3cd7edd4c650cdb09")
+
+
+def _populated_state() -> MockState:
+    return MockState(
+        zones={1: MockZoneState(name="FRONT_DOOR")},
+        units={1: MockUnitState(name="LIVING_LAMP")},
+        areas={1: MockAreaState(name="MAIN")},
+        thermostats={1: MockThermostatState(name="LIVING")},
+        buttons={1: MockButtonState(name="GOOD_MORNING")},
+        user_codes={1: 1234},
+    )
+
+
+async def test_udp_handshake_roundtrip() -> None:
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=_populated_state())
+    async with (
+        panel.serve(transport="udp") as (host, port),
+        OmniConnection(
+            host=host,
+            port=port,
+            controller_key=CONTROLLER_KEY,
+            transport="udp",
+            timeout=2.0,
+        ) as conn,
+    ):
+        assert conn.state is ConnectionState.ONLINE
+    assert panel.session_count == 1
+
+
+async def test_udp_get_system_information() -> None:
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=_populated_state())
+    async with (
+        panel.serve(transport="udp") as (host, port),
+        OmniConnection(
+            host=host,
+            port=port,
+            controller_key=CONTROLLER_KEY,
+            transport="udp",
+            timeout=2.0,
+        ) as conn,
+    ):
+        reply = await conn.request(OmniLink2MessageType.RequestSystemInformation)
+        assert reply.opcode == int(OmniLink2MessageType.SystemInformation)
+        # First payload byte is the model byte.
+        assert reply.payload[0] == 16  # OMNI_PRO_II
+
+
+async def test_udp_arm_area_with_correct_code() -> None:
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=_populated_state())
+    async with (
+        panel.serve(transport="udp") as (host, port),
+        OmniClient(
+            host=host,
+            port=port,
+            controller_key=CONTROLLER_KEY,
+            transport="udp",
+            timeout=2.0,
+        ) as client,
+    ):
+        await client.execute_security_command(
+            area=1, mode=SecurityMode.AWAY, code=1234,
+        )
+        statuses = await client.get_object_status(ObjectType.AREA, 1)
+    assert len(statuses) == 1
+    area = statuses[0]
+    assert isinstance(area, AreaStatus)
+    assert area.mode == int(SecurityMode.AWAY)
+
+
+async def test_udp_arm_with_wrong_code_raises() -> None:
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=_populated_state())
+    async with panel.serve(transport="udp") as (host, port):
+        with pytest.raises(CommandFailedError):
+            async with OmniClient(
+                host=host,
+                port=port,
+                controller_key=CONTROLLER_KEY,
+                transport="udp",
+                timeout=2.0,
+            ) as client:
+                await client.execute_security_command(
+                    area=1, mode=SecurityMode.AWAY, code=9999,
+                )
+
+
+async def test_udp_unit_on_pushes_state_changed_event() -> None:
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=_populated_state())
+    async with (
+        panel.serve(transport="udp") as (host, port),
+        OmniClient(
+            host=host,
+            port=port,
+            controller_key=CONTROLLER_KEY,
+            transport="udp",
+            timeout=2.0,
+        ) as client,
+    ):
+        events = client.events()
+        await client.turn_unit_on(1)
+        ev = await asyncio.wait_for(events.__anext__(), timeout=1.0)
+        assert isinstance(ev, UnitStateChanged)
+        assert ev.unit_index == 1
+        assert ev.is_on is True
+
+
+async def test_udp_wrong_key_fails_handshake() -> None:
+    panel = MockPanel(controller_key=CONTROLLER_KEY)
+    wrong_key = secrets.token_bytes(16)
+    async with panel.serve(transport="udp") as (host, port):
+        with pytest.raises(HandshakeError):
+            async with OmniConnection(
+                host=host,
+                port=port,
+                controller_key=wrong_key,
+                transport="udp",
+                timeout=2.0,
+            ):
+                pass

tests/test_e2e_v1_mock.py

@@ -0,0 +1,252 @@
+"""End-to-end: OmniClientV1 ↔ MockPanel speaking the v1 wire dialect.
+
+Exercises the MockPanel's new ``_dispatch_v1`` path over UDP (which
+is what ``OmniClientV1`` opens — see :class:`omni_pca.v1.connection.
+OmniConnectionV1`). The packets travel ``127.0.0.1`` so there is no
+real packet-loss risk; we still set a 2 s per-reply timeout to fail
+fast if the dispatcher hangs.
+"""
+
+from __future__ import annotations
+
+import pytest
+
+from omni_pca.commands import CommandFailedError
+from omni_pca.mock_panel import (
+    MockAreaState,
+    MockButtonState,
+    MockPanel,
+    MockState,
+    MockThermostatState,
+    MockUnitState,
+    MockZoneState,
+)
+from omni_pca.models import SecurityMode
+from omni_pca.v1 import NameType, OmniClientV1
+
+CONTROLLER_KEY = bytes.fromhex("6ba7b4e9b4656de3cd7edd4c650cdb09")
+
+
+def _populated_state() -> MockState:
+    return MockState(
+        zones={
+            1: MockZoneState(name="FRONT DOOR"),
+            2: MockZoneState(name="BACK DOOR"),
+            3: MockZoneState(name="LIVING MOT", current_state=1, loop=0xFD),
+        },
+        units={
+            1: MockUnitState(name="FRONT PORCH", state=1),       # on
+            2: MockUnitState(name="LIVING LAMP", state=0x96),    # 50% brightness
+        },
+        areas={1: MockAreaState(name="MAIN", mode=int(SecurityMode.OFF))},
+        thermostats={
+            1: MockThermostatState(
+                name="DOWNSTAIRS",
+                temperature_raw=170, heat_setpoint_raw=140,
+                cool_setpoint_raw=200, system_mode=1, fan_mode=0, hold_mode=0,
+            ),
+        },
+        buttons={1: MockButtonState(name="GOOD MORNING")},
+        user_codes={1: 1234},
+    )
+
+
+# ---- handshake + read API ------------------------------------------------
+
+
+@pytest.mark.asyncio
+async def test_v1_handshake_and_system_information() -> None:
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=_populated_state())
+    async with panel.serve(transport="udp") as (host, port):
+        async with OmniClientV1(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            info = await c.get_system_information()
+            assert info.model_name == "Omni Pro II"
+            assert info.firmware_version == "2.12r1"
+
+
+@pytest.mark.asyncio
+async def test_v1_get_system_status_reports_areas() -> None:
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=_populated_state())
+    async with panel.serve(transport="udp") as (host, port):
+        async with OmniClientV1(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            status = await c.get_system_status()
+            # Mock emits 8 area mode bytes (Omni Pro II cap).
+            assert len(status.area_alarms) == 8
+            # Each tuple is (mode, 0); area 1 was OFF (0).
+            assert status.area_alarms[0] == (0, 0)
+
+
+@pytest.mark.asyncio
+async def test_v1_zone_status_short_form() -> None:
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=_populated_state())
+    async with panel.serve(transport="udp") as (host, port):
+        async with OmniClientV1(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            zones = await c.get_zone_status(1, 8)
+            assert len(zones) == 8
+            assert zones[1].is_secure
+            # Zone 3 has current_state=1 (NotReady -> open).
+            assert zones[3].is_open
+            assert zones[3].loop == 0xFD
+
+
+@pytest.mark.asyncio
+async def test_v1_unit_status_short_form() -> None:
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=_populated_state())
+    async with panel.serve(transport="udp") as (host, port):
+        async with OmniClientV1(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            units = await c.get_unit_status(1, 4)
+            assert units[1].is_on
+            assert units[2].brightness == 50    # state=0x96 == 150 -> 50%
+            assert not units[3].is_on            # undefined slot, defaults
+            assert not units[4].is_on
+
+
+@pytest.mark.asyncio
+async def test_v1_unit_status_long_form() -> None:
+    """Force the BE-u16 wire form by including indices > 255."""
+    state = _populated_state()
+    state.units[300] = MockUnitState(name="SPRINKLER-Z3", state=1)
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=state)
+    async with panel.serve(transport="udp") as (host, port):
+        async with OmniClientV1(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            units = await c.get_unit_status(298, 302)
+            assert len(units) == 5
+            assert units[300].is_on
+
+
+@pytest.mark.asyncio
+async def test_v1_thermostat_status() -> None:
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=_populated_state())
+    async with panel.serve(transport="udp") as (host, port):
+        async with OmniClientV1(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            tstats = await c.get_thermostat_status(1, 1)
+            t = tstats[1]
+            assert t.temperature_raw == 170
+            assert t.heat_setpoint_raw == 140
+            assert t.cool_setpoint_raw == 200
+            assert t.system_mode == 1
+            assert t.fan_mode == 0
+            assert t.hold_mode == 0
+
+
+# ---- UploadNames streaming ----------------------------------------------
+
+
+@pytest.mark.asyncio
+async def test_v1_upload_names_streams_all_objects() -> None:
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=_populated_state())
+    async with panel.serve(transport="udp") as (host, port):
+        async with OmniClientV1(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            all_names = await c.list_all_names()
+
+    # Expected: Zones 1-3, Units 1-2, Button 1, Area 1, Thermostat 1.
+    assert set(all_names.keys()) == {
+        int(NameType.ZONE),
+        int(NameType.UNIT),
+        int(NameType.BUTTON),
+        int(NameType.AREA),
+        int(NameType.THERMOSTAT),
+    }
+    assert all_names[int(NameType.ZONE)] == {
+        1: "FRONT DOOR", 2: "BACK DOOR", 3: "LIVING MOT",
+    }
+    assert all_names[int(NameType.UNIT)] == {
+        1: "FRONT PORCH", 2: "LIVING LAMP",
+    }
+    assert all_names[int(NameType.BUTTON)] == {1: "GOOD MORNING"}
+    assert all_names[int(NameType.AREA)] == {1: "MAIN"}
+    assert all_names[int(NameType.THERMOSTAT)] == {1: "DOWNSTAIRS"}
+
+
+@pytest.mark.asyncio
+async def test_v1_upload_names_empty_panel_returns_no_records() -> None:
+    panel = MockPanel(controller_key=CONTROLLER_KEY)
+    async with panel.serve(transport="udp") as (host, port):
+        async with OmniClientV1(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            all_names = await c.list_all_names()
+    assert all_names == {}
+
+
+@pytest.mark.asyncio
+async def test_v1_upload_names_two_byte_form_for_high_indices() -> None:
+    state = _populated_state()
+    state.units[300] = MockUnitState(name="Z-LANDSCAPE")  # > 255
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=state)
+    async with panel.serve(transport="udp") as (host, port):
+        async with OmniClientV1(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            all_names = await c.list_all_names()
+    assert all_names[int(NameType.UNIT)][300] == "Z-LANDSCAPE"
+
+
+# ---- write methods ------------------------------------------------------
+
+
+@pytest.mark.asyncio
+async def test_v1_turn_unit_on_mutates_mock_state() -> None:
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=_populated_state())
+    async with panel.serve(transport="udp") as (host, port):
+        async with OmniClientV1(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            assert panel.state.units[2].state == 0x96  # 50%
+            await c.set_unit_level(2, 75)
+            assert panel.state.units[2].state == 100 + 75  # 175 = 75%
+
+
+@pytest.mark.asyncio
+async def test_v1_bypass_and_restore_zone() -> None:
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=_populated_state())
+    async with panel.serve(transport="udp") as (host, port):
+        async with OmniClientV1(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            await c.bypass_zone(1, code=1)
+            assert panel.state.zones[1].is_bypassed
+            await c.restore_zone(1, code=1)
+            assert not panel.state.zones[1].is_bypassed
+
+
+@pytest.mark.asyncio
+async def test_v1_execute_security_command_arm_away() -> None:
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=_populated_state())
+    async with panel.serve(transport="udp") as (host, port):
+        async with OmniClientV1(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            await c.execute_security_command(
+                area=1, mode=SecurityMode.AWAY, code=1234
+            )
+    assert panel.state.areas[1].mode == int(SecurityMode.AWAY)
+
+
+@pytest.mark.asyncio
+async def test_v1_execute_security_command_wrong_code() -> None:
+    panel = MockPanel(controller_key=CONTROLLER_KEY, state=_populated_state())
+    async with panel.serve(transport="udp") as (host, port):
+        async with OmniClientV1(
+            host=host, port=port, controller_key=CONTROLLER_KEY, timeout=2.0
+        ) as c:
+            with pytest.raises(CommandFailedError):
+                await c.execute_security_command(
+                    area=1, mode=SecurityMode.AWAY, code=9999
+                )
+    # State unchanged after failed command.
+    assert panel.state.areas[1].mode == int(SecurityMode.OFF)