feat: migrate entire codebase to TypeScript

src/routes/health.ts

@@ -0,0 +1,13 @@
+import logger from '../utils/logger';
+import { db } from '../db';
+import { sql } from 'drizzle-orm';
+
+export const handleHealth = async (_req: Request): Promise<Response> => {
+  try {
+    await db.execute(sql`SELECT 1`);
+    return Response.json({ status: 'ok' }, { status: 200 });
+  } catch (error: any) {
+    logger.error('Health check failed', { error: error.message });
+    return Response.json({ status: 'error', error: error.message }, { status: 500 });
+  }
+};