- four-tier principle fixed in ARCHITECTURE: global > space > room >
device, specific overrides general, unset inherits
- room.settings { fill_mode, temp_source, hum_source } with backend
schema; pure roomFillModeOf + sourceValue (+2 test suites, 114)
- gear on room cards in the Plan editor opens Room settings: rename,
re-area (current area included in the list), fill override (may opt
out of glow darkness), explicit temp/hum source with a searchable
device+entity dropdown; the same section in the creation dialog
- source feeds the room card, tooltip and temp fill; works for rooms
without an HA area (user-feedback case #1)
- smoke_room_settings.mjs (10 checks); TESTING/CHANGELOG/ARCHITECTURE
same-commit
