style: auto-fix lint and format

apps/nextjs/src/app/api/mcp/_serialize-result.spec.ts

@@ -20,4 +20,4 @@ describe("serializeMcpToolResult", () => {
   it("serializes void results as the string null so MCP content text is always a string", () => {
     expect(serializeMcpToolResult(undefined)).toBe("null");
   });
-});
+});

apps/nextjs/src/app/api/mcp/_serialize-result.ts

@@ -1,3 +1,3 @@
 export function serializeMcpToolResult(result: unknown): string {
   return JSON.stringify(result) ?? "null";
-}
+}