fix(worker): restore reliable 5s incremental sync cadence

api/src/workert.ts

@@ -163,6 +163,7 @@ if (import.meta.main) {
   // Register job handler for DALPURI_FULL_SYNC
   const { enqueueDalpuriFullSync } = await import("./modules/workers/sync-manager");
   const { executeIncrementalSync } = await import("./modules/workers/dalpuri-sync");
+  const { enqueueIncrementalSync } = await import("./modules/workers/incremental-sync");
   await boss.work(WorkerQueue.DALPURI_FULL_SYNC, async () => {
     const socket = await ensureManagerSocketReady();
     await enqueueDalpuriFullSync(socket);
@@ -170,10 +171,37 @@ if (import.meta.main) {
   console.log("[worker] Registered DALPURI_FULL_SYNC job handler");
 
   await boss.work(WorkerQueue.DALPURI_INCREMENTAL_SYNC, async () => {
-    await executeIncrementalSync();
+    const startedAt = Date.now();
+    console.log("[worker] DALPURI_INCREMENTAL_SYNC started");
+    try {
+      await executeIncrementalSync();
+      console.log(
+        `[worker] DALPURI_INCREMENTAL_SYNC completed in ${Date.now() - startedAt}ms`
+      );
+    } catch (err) {
+      console.error(
+        `[worker] DALPURI_INCREMENTAL_SYNC failed in ${Date.now() - startedAt}ms`,
+        err
+      );
+      throw err;
+    }
   });
   console.log("[worker] Registered DALPURI_INCREMENTAL_SYNC job handler");
 
+  const enqueueIncrementalWithLogging = () => {
+    enqueueIncrementalSync().catch((err) => {
+      console.error(
+        `[worker] interval enqueueIncrementalSync failed: ${err?.message ?? err}`
+      );
+    });
+  };
+
+  // Keep a worker-local 5s scheduler so incremental sync continues even when
+  // API interval scheduling is unavailable.
+  enqueueIncrementalWithLogging();
+  setInterval(enqueueIncrementalWithLogging, 5_000);
+  console.log("[worker] Started 5-second incremental enqueue interval");
+
   // Register job handler for REFRESH_SALES_METRICS
   const { executeSalesMetricsRefresh } = await import("./modules/workers/sales-metrics");
   await boss.work(WorkerQueue.REFRESH_SALES_METRICS, async (jobs) => {