chore: Update sample code with new MCP SDK (#1303)

* Update mcp sdk and sample code tutorial usage

* fix: Changes from lint

---------

Co-authored-by: cloud-sdk-js <[email protected]>

Author: ZhongpinWang

pnpm-lock.yaml

@@ -37,6 +37,6 @@
     "@types/express": "^5.0.5",
     "express": "^5.1.0",
     "uuid": "^13.0.0",
-    "zod": "^3.25.76"
+    "zod": "^4.1.13"
   }
 }

sample-code/package.json

@@ -3,18 +3,22 @@
 /* eslint-disable import/no-internal-modules */
 import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js';
 import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
-import * as z from 'zod/v3';
+import * as z from 'zod';
 
 const server = new McpServer({
   name: 'Open-Meteo Weather MCP Server',
   version: '1.0.0'
 });
 
-server.tool(
+server.registerTool(
   'get_weather',
-  'Tool to fetch weather details for a specific city',
   {
-    city: z.string().describe('The name of the city to get the weather for')
+    description: 'Tool to fetch weather details for a specific city',
+    inputSchema: {
+      city: z
+        .string()
+        .meta({ description: 'The name of the city to get the weather for' })
+    }
   },
   async ({ city }) => {
     try {