chore(meta): update changelog

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

CHANGELOG.md

@@ -6,7 +6,13 @@ Format based on [Keep a Changelog](https://keepachangelog.com/).
 
 ## [Unreleased]
 
+### Added
+- `make pre-pr` target — full pre-PR verification chain: lint → build → test → content validation → fixture staleness (#460, #465)
+- Branch-specific pre-PR variants: `make pre-pr-server`, `make pre-pr-client`, `make pre-pr-content`
+- Content cross-reference validation (9 checks) — canonical_id uniqueness, relationship targets, location slugs, dialogue locations, fact_ids, triangle membership, npc_count, dialogue line_ids, bidirectional relationships (#464)
+
 ### Fixed
+- Dialogue schema missing `focused` (mood) and `greeting` (situation) values added in Sprint 7-8 content
 - Speaker wire ID silent fallback — dialogue now warns and skips when target entity missing from registry (was silently using 0)
 - Cross-plugin system ordering — trigger_recognition_monologue now runs after detect_anomalies (latent determinism bug)
 - Walk-away ordering — process_walk_away now runs after process_talk_interaction (prevents same-tick race)