feat: expose monitoring pf health detail

app/worker.py

@@ -10,6 +10,8 @@ import json
 import sys
 from typing import Any
 
+from sqlalchemy import text
+
 from app.db import SessionLocal, init_db
 from app.models import Project
 from app.services.monitor import (
@@ -131,7 +133,17 @@ def cmd_suggest(payload: dict[str, Any]) -> None:
         db.close()
 
 
+def cmd_health(_: dict[str, Any]) -> None:
+    db = SessionLocal()
+    try:
+        db.execute(text("SELECT 1"))
+        _write({"status": "ok"})
+    finally:
+        db.close()
+
+
 COMMANDS = {
+    "health": cmd_health,
     "add-listing": cmd_add_listing,
     "add-listings": cmd_add_listings,
     "check-project": cmd_check_project,