fix: Add tr-worker files, sanitize IPs, update validation checklists

- Add realtime_qdrant_watcher.py and mem-qdrant-watcher.service to tr-worker/
- Sanitize private IPs (10.0.0.x → <QDRANT_IP>, <OLLAMA_IP>)
- Replace absolute paths with placeholders
- Add GIT_VALIDATION_CHECK.md for security validation
- Update validation checklists to v2.4
- Remove session.md from git (local-only file)

.gitignore

@@ -57,3 +57,9 @@ datasets/
 build/
 dist/
 *.egg-info/
+
+# Session and validation files (local only)
+session.md
+VALIDATION_*.md
+audit_results_*.md
+CONTEXT_INJECTION_*.md