Replace sidebar + 5-screen layout with horizontal tab bar (F1-F4)
and persistent StatusStrip. Consolidate Position + Scan screens into
Signal (F3) with Monitor/Sweep/Sky Map sub-modes via ModeBar.
Screens:
- F1 Dashboard: system health, tracking panel, quick actions, presets
- F2 Control: motor tuning, compass rose, preset management
- F3 Signal: RSSI monitor, 1D sweep (SweepPlot), 2D sky map (heatmap)
- F4 System: NVS editor with regex filter, EEPROM, firmware info
- F5 Console: push/pop overlay (no longer a tab)
New widgets: StatusStrip, ModeBar, SweepPlot, QuickActions, PresetList,
ReceiverInfo, MotorTuning, NvsFilter, SystemHealth, TrackingPanel.
Removed: PositionScreen, ScanScreen, DeviceStatusBar (functionality
absorbed into new screens and StatusStrip).
App-level position poll feeds StatusStrip and active screen at ~2 Hz.
Fix shared threading.Event across instances (class-level mutable default).
Stop handler now calls cancel_operation() on the device bridge,
which sets a threading.Event that interrupts the 2s-timeout serial
read loop in send_with_timeout(). InterruptedError is caught
separately to prevent falling back to software sweep on cancel.
disconnect() uses acquire(timeout=5) with force-close fallback
instead of blocking lock acquisition — prevents deadlock when a
stuck worker holds the serial lock during shutdown.
Add 3 Textual async tests (pytest-asyncio) to verify Stop behavior:
firmware sweep stop, software sweep stop, and sweep restart.
The sweep/scan finally blocks call self.app.call_from_thread() to
reset button state, but self.app raises NoActiveAppError if the
Textual context is already torn down during Ctrl+C shutdown.
Wrap with contextlib.suppress so the flag reset still happens.
send_with_timeout now uses a 2s per-byte timeout with a deadline
loop instead of one long blocking read, checking a cancel event
between reads. SerialBridge.disconnect() sets the cancel event
before acquiring the lock, so a blocked firmware sweep aborts
within ~2s and releases the lock for clean port shutdown.
_sweeping/_scanning flags were never reset when workers finished,
leaving the UI stuck in "Stopping..." forever. Both _do_sweep and
_do_scan now use try/finally to always clear state and reset button
styles. Firmware sweep checks the flag after the blocking serial
call returns and discards results if Stop was pressed mid-execution.
Adds send_with_timeout() to CarryoutG2Protocol for long-running
commands, and az_sweep_firmware() to both SerialBridge and DemoDevice.
Sweep and Sky Map modes now try the firmware path first (single
azscanwxp command, streaming results) and fall back to software
step-dwell-measure on error or when "Software mode" checkbox is
checked. Software sweep fixed to set EL once and move AZ only.
Replace time.sleep() with threading.Event.wait() in all poll
loops so worker threads exit immediately on shutdown instead of
blocking for up to 500ms per iteration. Fixes the on_unmount
crash (NoMatches from querying removed DOM nodes) by signaling
the event directly rather than iterating child widgets.
Three shutdown paths covered: q key (on_unmount), Ctrl+C
(try/finally in main), and Textual internal shutdown.
Poll threads (position at 2 Hz, signal when monitoring) run
while-loops with time.sleep() that never exit on app quit.
Add on_unmount() to PositionScreen, SignalScreen, and BirdcageApp
to clear polling flags and disconnect the device, so worker threads
exit within the sleep interval instead of hitting the 300s timeout.
F1 Position (compass rose, motor control, sparklines),
F2 Signal (RSSI gauge with sub-char precision, DVB/ADC sparklines, LNA toggle),
F3 Scan (AZ/EL grid sweep with heatmap and CSV export),
F4 System (NVS table, A3981 diagnostics, motor dynamics),
F5 Console (raw serial terminal with prompt detection and safety gates).
Includes SerialBridge (thread-safe protocol wrapper), DemoDevice
(synthetic simulation for --demo mode), dark RF theme with rounded
borders and teal accents, and send_raw() on CarryoutG2Protocol.
