Three new gauntlet test rooms for Sprint 13, each targeting a specific
system under test. StableIds are additive-only (66–74).
Sound Lab (66-68): Three NPCs at calibrated tile distances (2, 6, 12
tiles) verify D-018 three-range sound model. Tests confirm Close ≤3,
Medium ≤8, Long ≤20 tile thresholds via SoundEvent::audible_at().
Decay Observatory (69): Single NPC observed in LOS then broken. Tests
confirm D-041 confidence decay: KnowsDetails → KnowsOf → Suspects
(floor), and Stale state when stale_after threshold is exceeded.
Shift Change (70-71): Two NPCs with DailyRoutine components. Test
confirms D-031 phase-boundary check_phase_transition issues PathRequest
only to NPCs not already at their target location.
Sprint 13 reset plates (72-74) wired per existing pattern.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
jpmschweitzerandClaude Sonnet 4.6
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