Walks the OMNI_PRO_II installer section past ZoneType, DCM stuff,
thermostat config, and the X10/VoltOut/FlagOut/ExpEnc area-group
arrays to land on the 176-byte Zones[].Area block at offset 3106.
The path from instSetupStart (2560) to zone area:
ZoneType[176] → DCM phones/accounts/type/test(5-byte clsWhen) →
DCMAlarmCode[176] → 8 DCM bytes → TempFormat..NumAreasUsed (29 bytes
of misc config including 25-byte CallBackNumber) → X10 area groups
(16) → VoltOut (8) → FlagOut (15) → ExpEnc (32) → Zones[].Area (176).
Total preamble within installer section = 546 bytes. Verified against
the live fixture: 176 zones all assigned to area 1 (single-area
install), matches expectation.
PcaAccount.zone_areas now carries {slot: area_number}; MockState.from_pca
threads it through MockZoneState.area; mock _build_zone_properties already
serves it. End-to-end test verifies the area flows through to
coordinator.data.zones[*].area.
This was the largest single-RE jump in SetupData decoding so far — got
us past the variable-length DCM block by counting fixed-width fields
out from the known ZoneType end. The clsWhen=5-byte struct was the
last unknown; derived from clsHardwareArray.ReadWhen (clsHardwareArray
.cs:456-468).
Full suite: 499 passed, 1 skipped.
Ryan Malloy
8141599b4e