chore(meta): update changelog

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

CHANGELOG.md

@@ -7,6 +7,9 @@ Format based on [Keep a Changelog](https://keepachangelog.com/).
 ## [Unreleased]
 
 ### Added
+- Pre-commit FactId validation hook (#393) — grep-based check validates fact_id references in content YAML against canonical knowledge catalogs; advisory mode when catalogs are stubs, enforcing mode when populated
+- Pre-commit hook infrastructure — `.config/hooks/` with modular dispatcher, `make setup-hooks` target, `core.hooksPath` config for worktree-safe hook installation
+- `make check-fact-ids` target for manual fact_id validation
 - Hoshe QA briefing updated with integration test coverage priorities — test harnesses, dedicated client-server test map, edge case focus
 - Sprint 5 "Live" team briefings — copy (6 tickets), client (2), CI (1), joint coordination for content-at-scale sprint targeting FRIEND packs, voice patterns, NPC style guide, PC-as-NPC authoring, UI microcopy, FactId validation
 - Live server mode (`make game`) — single command builds server, launches client with TCP connection, auto-kills server on exit; `make stop` helper for manual cleanup