feat: add direct PostgreSQL and ACK deployment support

scripts/worker.mjs

@@ -4,6 +4,7 @@ const baseUrl = (process.env.ZHINIAN_WORKER_BASE_URL || process.env.NEXT_PUBLIC_
 const token = (process.env.ZHINIAN_INTERNAL_WORKER_TOKEN || "").trim();
 const intervalMs = positiveInt(process.env.ZHINIAN_WORKER_INTERVAL_MS, 5000);
 const limit = positiveInt(process.env.ZHINIAN_WORKER_BATCH_SIZE, 3);
+const requestTimeoutMs = positiveInt(process.env.ZHINIAN_WORKER_REQUEST_TIMEOUT_MS, 120000);
 const once = process.argv.includes("--once");
 const workerId = process.env.ZHINIAN_WORKER_ID || `worker-${Math.random().toString(16).slice(2)}`;
 
@@ -19,7 +20,8 @@ async function tick() {
       "Content-Type": "application/json",
       ...(token ? { "X-Zhinian-Worker-Token": token } : {})
     },
-    body: JSON.stringify({ workerId, limit })
+    body: JSON.stringify({ workerId, limit }),
+    signal: AbortSignal.timeout(requestTimeoutMs)
   });
   const text = await response.text();
   if (!response.ok) throw new Error(`Worker tick failed: ${response.status} ${text}`);