Debug and LOS tracks for Sprint 23 (#580, #584):
- DebugCommandKind enum with 10 variants (AdvanceTicks,
SkipToContamination, TeleportToPosition, ForceContaminationActivate,
InspectNpc, ListTriangles, ListPopulation, GetContaminationStatus,
TeleportToLocation, ForceTriangleActivation)
- DebugResponsePayload on ObserverSnapshot, handle_debug_commands
system gated by DebugEnabled resource
- PROTOCOL_VERSION bumped 17 → 18
- VisibilitySector::BoundaryWall variant — 1-tile wall margin beyond
LOS boundary included in visible_tiles (not exploration/memory)
- compute_boundary_walls() pass in NaturalVision after FOV+cone
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>