chore(meta): update changelog

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

CHANGELOG.md

@@ -7,6 +7,16 @@ Format based on [Keep a Changelog](https://keepachangelog.com/).
 ## [Unreleased]
 
 ### Added
+- Background tier state machines — schedule, mood, relationships, job tick once per game-minute for Background NPCs (#95, D-026)
+- NPC vision system — symmetric shadowcasting for Active-tier NPCs, NpcMemory with last-known-position and zone inference (#115, D-011)
+- NPC player-awareness behavior — PlayerAwareness component tracks LOS duration, suspicion accumulation, routine deviation triggers (#244)
+- Skill system & combat flag — SkillSet component (BTreeMap<String, u8>), CombatCapability marker from combat_trained skill (#91, D-024)
+- Player-action social propagation — three-order trust ripple (100%/40%/20%) through RelationshipGraph with cycle prevention (#249, D-029)
+- Examine mechanic — process_examine_interaction with character-filtered observation text, KG DirectObservation write, examine_result in ObserverSnapshot (#242)
+- Character goal/pressure framework — CharacterPressure component (exposure/institutional/relationship), wired to snapshot HUD data (#248)
+- Save state data model — SaveStateV1 struct with MessagePack serialization, roundtrip tests for entity/KG/relationship/clock state (#256)
+- Tell state derivation wired into ObserverSnapshot — integration tests for Nervous tell on Major secret + high stress (#337)
+- Protocol version bumped to v14 — examine_result and character_pressure fields added to ObserverSnapshot
 - Sprint 18: Touch planned — 14 tickets (server 9, client 3, copy 2) covering examine mechanic, NPC awareness, social propagation, minimap, dialogue UI, save state model
 - `.claude/rules/` directory — modular auto-loaded instructions (tea-cli, git-safety, project-structure, team-patterns, local-services)
 - KnowledgeGrant untagged enum with Fact and Entity variants, ContentEntityRegistry for NPC spawn-time entity resolution (D-079, #545)