feat: download completed export jobs

apps/api/src/modules/exports/routes/admin-export-routes.js

@@ -78,4 +78,21 @@ export async function registerAdminExportRoutes(app, options) {
       },
     });
   });
+
+  app.get('/exports/jobs/:id/download', async (request, reply) => {
+    const job = await adminExportService.getExportJob({
+      sellerId: request.admin.sellerId,
+      jobId: request.params.id,
+    });
+    if (!job) {
+      throw createApplicationError('EXPORT_JOB_NOT_FOUND', 'Export job was not found.', 404);
+    }
+    if (job.status !== 'COMPLETED' || !Array.isArray(job.output)) {
+      throw createApplicationError('EXPORT_NOT_READY', 'Export is not ready for download.', 409);
+    }
+    return reply
+      .type('application/json; charset=utf-8')
+      .header('content-disposition', 'attachment; filename="inventory.json"')
+      .send(JSON.stringify(job.output));
+  });
 }

apps/api/tests/http/admin-export-routes.test.js

@@ -125,4 +125,9 @@ test('enqueues and polls an asynchronous inventory export', async (testContext)
   assert.equal(enqueue.json().data.id, 'job-1');
   assert.equal(poll.statusCode, 200);
   assert.deepEqual(poll.json().data.output, [{ id: 'item-1' }]);
+
+  const download = await app.inject({ method: 'GET', url: '/api/v1/admin/exports/jobs/job-1/download' });
+  assert.equal(download.statusCode, 200);
+  assert.equal(download.headers['content-disposition'], 'attachment; filename="inventory.json"');
+  assert.deepEqual(JSON.parse(download.body), [{ id: 'item-1' }]);
 });

apps/web/src/pages/AdminHomePage.vue

@@ -55,6 +55,7 @@ const inventory = ref([]);
 const selectedInventoryIds = ref([]);
 const inventoryTags = ref("");
 const exportStatus = ref("");
+const exportJobId = ref("");
 const listings = ref([]);
 const sales = ref([]);
 const acquisitions = ref([]);
@@ -262,6 +263,7 @@ async function enqueueInventoryExport() {
   exportStatus.value = "Starting export...";
   try {
     const job = await enqueueAdminInventoryExport(csrfToken());
+    exportJobId.value = job.id;
     const completed = await getAdminInventoryExportJob(job.id);
     exportStatus.value = `Export ${completed.status.toLowerCase()}.`;
   } catch (requestError) {
@@ -542,6 +544,14 @@ onMounted(load);
         Queue JSON export
       </button>
       <span v-if="exportStatus" role="status">{{ exportStatus }}</span>
+      <a
+        v-if="exportJobId && exportStatus === 'Export completed.'"
+        class="button button--secondary"
+        :href="`/api/v1/admin/exports/jobs/${exportJobId}/download`"
+        download="inventory.json"
+      >
+        Download queued export
+      </a>
     </p>
     <p v-if="isLoading" class="state state--loading" role="status">
       Loading inventory...

docs/API.md

@@ -104,6 +104,7 @@ GET    /api/v1/admin/exports/inventory.csv
 GET    /api/v1/admin/exports/inventory.xls
 POST   /api/v1/admin/exports/inventory.json/jobs
 GET    /api/v1/admin/exports/jobs/:id
+GET    /api/v1/admin/exports/jobs/:id/download
 GET    /api/v1/admin/settings
 PATCH  /api/v1/admin/settings
 

docs/IMPLEMENTATION-STATUS.md

@@ -154,6 +154,7 @@ Remaining roadmap areas are bulk status actions, asynchronous large exports, app
 - Admin inventory Excel-compatible export is implemented at `GET /api/v1/admin/exports/inventory.xls` using the XML workbook format and seller-scoped admin DTOs.
 - Seller-scoped admin settings are implemented through `GET/PATCH /api/v1/admin/settings` with strict category allowlists and server-side partial-update merging.
 - Large inventory JSON exports can be enqueued through `POST /api/v1/admin/exports/inventory.json/jobs` and polled through `GET /api/v1/admin/exports/jobs/:id`; the worker owns claim, completion, and failure processing.
+- Completed asynchronous inventory JSON exports can be downloaded through `GET /api/v1/admin/exports/jobs/:id/download`.
 - PostgreSQL restore verification and image snapshot restore scripts are implemented and covered by shell tests as part of the deployment drill workflow.
 - `npm audit --omit=dev` currently reports zero production vulnerabilities. Re-run the audit after dependency changes and review development-dependency findings separately before production releases.