Storyteller chain for Sprint 23 (#570, #571, #572, #579):
- EngagementRecord component: per-NPC observation_time_ticks,
conversation_count, monologue_trigger_count — incremented by
perception, dialogue, and monologue systems
- MovementHistoryBuffer resource: ring buffer of player positions
over last 3000 ticks with npcs_copresent_in_window() query
- Lifecycle rules: single activation per session, no concurrency,
no cooldown, terminal resolution constants
- activation_pass() system: gate check, proximity query, engagement
scoring, unentangled-NPC routing, module selection, emits
TriangleActivatedEvent on 10-tick cadence after contamination
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>