New test_world room with two zones (Terminal/Corridor) separated by
a door. Adds ZoneCrossEventQueue resource and detect_zone_crossings
system to fire events when the player crosses zone boundaries.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add 3 zone enrichment tests to observer pipeline (tile inside zone,
tile outside zone, absent ZoneMap resource). Fix misleading Decay
Observatory doc comment that claimed Direct start when test starts at
KnowsDetails. Add production population TBD note on ZoneMap.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Server-tracked zone_id on VisibleTile for D-073 zone crossfade and
D-059 deep fog temperature tint. ZoneMap resource backed by BTreeMap,
observer enrichment in snapshot assembly. Backwards-compatible: v10
payloads deserialize with zone_id: None.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>