fix(agents): add mandatory task completion checklist and tracked git hooks

Root cause fix for AI agent failing to commit/push automatically:

1. Added Task Completion Checklist to AGENTS.md with mandatory items:
   - All requested work implemented
   - Changes staged (git add)
   - Changes committed (conventional format)
   - Changes pushed (git push)
   - STATUS.md updated (if applicable)
   - JOURNAL.md updated (if applicable)

2. Added pre-push hook in .githooks/ (tracked, not .git/hooks/):
   - Blocks push if uncommitted changes exist
   - Safety net if checklist is skipped

3. Fixed .gitignore: changed "vendor/" to "vendor" to also ignore symlink

After cloning, run: git config core.hooksPath .githooks

💘 Generated with Crush

Assisted-by: GLM-5 via Crush <crush@charm.land>

.gitignore

@@ -1,2 +1,2 @@
-vendor/
+vendor
 .env