rebuild app as turbopack-first single-stack with internal api and openclaw tasks

frontend/app/api/filings/route.ts

@@ -0,0 +1,22 @@
+import { getStoreSnapshot } from '@/lib/server/store';
+
+export async function GET(request: Request) {
+  const url = new URL(request.url);
+  const tickerFilter = url.searchParams.get('ticker')?.trim().toUpperCase();
+  const limitValue = Number(url.searchParams.get('limit') ?? 50);
+  const limit = Number.isFinite(limitValue)
+    ? Math.min(Math.max(Math.trunc(limitValue), 1), 250)
+    : 50;
+
+  const snapshot = await getStoreSnapshot();
+  const filtered = tickerFilter
+    ? snapshot.filings.filter((filing) => filing.ticker === tickerFilter)
+    : snapshot.filings;
+
+  const filings = filtered
+    .slice()
+    .sort((a, b) => Date.parse(b.filing_date) - Date.parse(a.filing_date))
+    .slice(0, limit);
+
+  return Response.json({ filings });
+}