fix(workers): skip background jobs when required tables are missing

Backend/services/push.ts

@@ -2,6 +2,7 @@ import { and, eq, lte } from 'drizzle-orm';
 
 import { db } from '../db/client';
 import { devices, pushNotifications } from '../db/schema';
+import { hasRequiredTables } from '../utils/db-schema';
 
 const MAX_ATTEMPTS = Number(process.env.PUSH_MAX_ATTEMPTS ?? 5);
 
@@ -83,10 +84,23 @@ export const dispatchPushQueueOnce = async (): Promise<number> => {
 
 export const startPushWorker = (): void => {
   const intervalMs = Number(process.env.PUSH_WORKER_INTERVAL_MS ?? 10_000);
+  const requiredTables = ['push_notifications', 'devices'];
 
-  setInterval(() => {
-    dispatchPushQueueOnce().catch((error) => {
-      console.error('push worker failed', error);
-    });
-  }, intervalMs);
+  void (async () => {
+    const ready = await hasRequiredTables(requiredTables);
+    if (!ready) {
+      console.warn(
+        `[push worker] skipped startup because required tables are missing (${requiredTables.join(', ')}). Run migrations and restart.`,
+      );
+      return;
+    }
+
+    setInterval(() => {
+      dispatchPushQueueOnce().catch((error) => {
+        console.error('push worker failed', error);
+      });
+    }, intervalMs);
+  })().catch((error) => {
+    console.error('push worker failed to initialize', error);
+  });
 };