fixed health status

app.py

@@ -183,6 +183,13 @@ def forward_request(method, url, headers, body):
 # ROUTES
 # ============================================================
 
+@app.route("/healthz")
+def health():
+    return {
+        "status": "ok",
+        "known_users": len(KNOWN_EXTERNAL_USERS)
+    }
+
 @app.route('/_matrix/client/v3/createRoom', methods=['POST'])
 def create_room():
     payload = request.get_json(silent=True) or {}