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>

AGENTS.md

@@ -99,6 +99,18 @@ echo '{"jsonrpc":"2.0","method":"initialize","params":{"capabilities":{},"protoc
   timeout 10 docker run --rm -i kneldevstack-aimiddleware-<service>
 ```
 
+## Git Hooks
+
+This project uses tracked git hooks stored in `.githooks/`. After cloning, run:
+
+```bash
+git config core.hooksPath .githooks
+```
+
+### Available Hooks
+
+- `pre-push` - Blocks push if uncommitted changes exist (safety net for AI agents)
+
 ## Task Completion Checklist
 
 **MANDATORY**: Before declaring ANY task complete, AI agents MUST verify ALL applicable items: