feat: add asynchronous inventory exports

apps/worker/tests/inventory-export-worker.test.js

@@ -0,0 +1,32 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+
+import { processNextInventoryExportJob } from '../src/inventory-export-worker.js';
+
+test('completes a claimed inventory export job', async () => {
+  const calls = [];
+  const result = await processNextInventoryExportJob({
+    jobRepository: {
+      async claimNext() { return { id: 'job-1', status: 'PROCESSING' }; },
+      async complete(id, output) { calls.push(['complete', id, output]); },
+    },
+    async exportInventory() { return [{ id: 'item-1' }]; },
+  });
+
+  assert.equal(result.status, 'COMPLETED');
+  assert.deepEqual(calls, [['complete', 'job-1', [{ id: 'item-1' }]]]);
+});
+
+test('fails an inventory export job when generation errors', async () => {
+  const calls = [];
+  const result = await processNextInventoryExportJob({
+    jobRepository: {
+      async claimNext() { return { id: 'job-1', status: 'PROCESSING' }; },
+      async fail(id, error) { calls.push(['fail', id, error]); },
+    },
+    async exportInventory() { throw new Error('export unavailable'); },
+  });
+
+  assert.equal(result.status, 'FAILED');
+  assert.deepEqual(calls, [['fail', 'job-1', 'export unavailable']]);
+});