fix: stateless /mcp for native MCP client

server.mjs

@@ -594,10 +594,8 @@ function errResp(text) {
 // Traditional SSE transport sessions (for Figma / older MCP clients)
 const sseSessions = new Map();
 
-// Stateful Streamable HTTP transport (for Cursor / modern clients)
-const mcpTransport = new StreamableHTTPServerTransport({
-  sessionIdGenerator: () => crypto.randomUUID(),
-});
+// Stateless Streamable HTTP transport (compatible with native MCP clients)
+const mcpTransport = new StreamableHTTPServerTransport({ sessionIdGenerator: undefined });
 await mcpServer.connect(mcpTransport);
 
 const httpServer = http.createServer(async (req, res) => {