Adds PostToolUse hook that detects stale GitNexus index after git mutations (commit, merge, rebase, cherry-pick, pull) and notifies the agent to reindex. Uses lightweight staleness check (git rev-parse HEAD vs meta.json) instead of running gitnexus analyze synchronously, avoiding KuzuDB corruption and 120s blocks. Security and cross-platform hardening: remove shell:true from all spawnSync calls, use .cmd extensions on Windows, add path.isAbsolute(cwd) guards, fix setup.ts path escaping with JSON.stringify, use sendHookResponse() consistently. Includes 73 regression tests.
- Hook config goes in ~/.claude/settings.json (not hooks.json)
- Matcher uses string format ("Grep|Glob|Bash") per new Claude Code schema
- Rename gitnexus-hook.js → gitnexus-hook.cjs for CommonJS compatibility
- Fix setup.ts: correct hook filename and timeout (8000ms instead of 10ms)
- Bump to v1.1.9 and publish to npm
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>