Handle stale frontend assets and harden worker startup

server/worker.ts

@@ -35,9 +35,14 @@ async function workOnce() {
 async function main() {
   console.log(`[worker] ${workerId} started`);
   for (;;) {
-    const hasWorked = await workOnce();
-    if (!hasWorked) {
-      await sleep(ENV.backgroundTaskPollMs);
+    try {
+      const hasWorked = await workOnce();
+      if (!hasWorked) {
+        await sleep(ENV.backgroundTaskPollMs);
+      }
+    } catch (error) {
+      console.error("[worker] loop error", error);
+      await sleep(Math.max(ENV.backgroundTaskPollMs, 3_000));
     }
   }
 }