chore(meta): update changelog

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

CHANGELOG.md

@@ -6,6 +6,18 @@ Format based on [Keep a Changelog](https://keepachangelog.com/).
 
 ## [Unreleased]
 
+### Added
+- Structured NPC data model (#86) — replaced stub string/f32 fields with typed enums and integer types for D-010 determinism (WantKind, SecretSeverity, Skill, PersonalityTrait, CombatStyle, RelationshipKind)
+- Global RelationshipGraph resource (#87) — BTreeMap with tuple key for efficient prefix queries and reverse lookups
+- A* pathfinding system (#237) — PathRequest/ComputedPath/PathBlocked components with cardinal-neighbor A* and manhattan heuristic
+- NPC path following system (#238) — MovementSpeed throttling, per-tick path advancement with MoveIntent creation
+- Daily routine system (#88) — NpcPlugin with PreviousDayPhase resource and check_phase_transition system issuing PathRequests at day-phase boundaries
+- Multiple NPC spawning (#84) — 3 distinct NPCs (dock worker, field tech, guard) with full component bundles and RelationshipGraph edges
+- Observation event generator (#239) — RoutineDeviation, Absence, and NewEntity triggers from comparing visible snapshot against NPC routines and knowledge state
+
+### Fixed
+- IPC error handling (#341) — DeserializationWithDump/MutexPoisoned error variants, hex dump logging on deserialization failure, graceful error classification in bridge I/O systems
+
 ### Changed
 - Ticketing database moved to shared worktree location (`../settledreach.db`) — eliminates binary merge conflicts across branches
 - All Python connectors use script-relative path resolution instead of `$REPO_ROOT` env var or git rev-parse