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

app/api/tasks/[taskId]/route.ts

@@ -0,0 +1,17 @@
+import { jsonError } from '@/lib/server/http';
+import { getTaskById } from '@/lib/server/tasks';
+
+type Context = {
+  params: Promise<{ taskId: string }>;
+};
+
+export async function GET(_request: Request, context: Context) {
+  const { taskId } = await context.params;
+  const task = await getTaskById(taskId);
+
+  if (!task) {
+    return jsonError('Task not found', 404);
+  }
+
+  return Response.json({ task });
+}

app/api/tasks/route.ts

@@ -0,0 +1,20 @@
+import type { TaskStatus } from '@/lib/types';
+import { listRecentTasks } from '@/lib/server/tasks';
+
+const ALLOWED_STATUSES: TaskStatus[] = ['queued', 'running', 'completed', 'failed'];
+
+export async function GET(request: Request) {
+  const url = new URL(request.url);
+  const limitValue = Number(url.searchParams.get('limit') ?? 20);
+  const limit = Number.isFinite(limitValue)
+    ? Math.min(Math.max(Math.trunc(limitValue), 1), 200)
+    : 20;
+
+  const rawStatuses = url.searchParams.getAll('status');
+  const statuses = rawStatuses.filter((status): status is TaskStatus => {
+    return ALLOWED_STATUSES.includes(status as TaskStatus);
+  });
+
+  const tasks = await listRecentTasks(limit, statuses.length > 0 ? statuses : undefined);
+  return Response.json({ tasks });
+}