fix(http): add malformed JSON syntax error handling middleware and update dist

src/http.ts

@@ -48,6 +48,18 @@ function keysFromRequest(req: Request): EnvSource {
 const app = express();
 app.use(express.json({ limit: "1mb" }));
 
+// Handle malformed JSON gracefully to prevent unhandled SyntaxErrors
+app.use((err: any, req: Request, res: Response, next: express.NextFunction) => {
+  if (err instanceof SyntaxError && "body" in err) {
+    return res.status(400).json({
+      ok: false,
+      error: "Bad Request",
+      message: "Malformed JSON payload provided.",
+    });
+  }
+  next(err);
+});
+
 // Allow browser-based and cross-origin MCP clients.
 app.use((req, res, next) => {
   res.header("Access-Control-Allow-Origin", "*");