flatten app to repo root and update docker deployment for single-stack runtime

app/api/filings/sync/route.ts

@@ -0,0 +1,28 @@
+import { asErrorMessage, jsonError } from '@/lib/server/http';
+import { enqueueTask } from '@/lib/server/tasks';
+
+export async function POST(request: Request) {
+  try {
+    const payload = await request.json() as {
+      ticker?: string;
+      limit?: number;
+    };
+
+    if (!payload.ticker || payload.ticker.trim().length < 1) {
+      return jsonError('ticker is required');
+    }
+
+    const task = await enqueueTask({
+      taskType: 'sync_filings',
+      payload: {
+        ticker: payload.ticker.trim().toUpperCase(),
+        limit: payload.limit ?? 20
+      },
+      priority: 90
+    });
+
+    return Response.json({ task });
+  } catch (error) {
+    return jsonError(asErrorMessage(error, 'Failed to queue filings sync task'));
+  }
+}