chore: Update environment configuration and package dependencies for MCP server

- Change MCP_SERVER in .env.example to use port 7123
- Add USE_STDIO_TRANSPORT flag in .env.example for stdio transport mode
- Update bun.lock to include new dependencies: cors, express, ajv, and their type definitions
- Add new scripts for building and running the MCP server with stdio transport
- Introduce PUBLISHING.md for npm publishing guidelines
- Enhance README with detailed setup instructions and tool descriptions

bin/test-stdio.js

@@ -0,0 +1,62 @@
+#!/usr/bin/env node
+
+/**
+ * Test script for MCP stdio transport
+ * 
+ * This script sends JSON-RPC 2.0 requests to the MCP server
+ * running in stdio mode and displays the responses.
+ * 
+ * Usage: node test-stdio.js | node bin/mcp-stdio.cjs
+ */
+
+// Send a ping request
+const pingRequest = {
+    jsonrpc: "2.0",
+    id: 1,
+    method: "ping"
+};
+
+// Send an info request
+const infoRequest = {
+    jsonrpc: "2.0",
+    id: 2,
+    method: "info"
+};
+
+// Send an echo request
+const echoRequest = {
+    jsonrpc: "2.0",
+    id: 3,
+    method: "echo",
+    params: {
+        message: "Hello, MCP!",
+        timestamp: new Date().toISOString(),
+        test: true,
+        count: 42
+    }
+};
+
+// Send the requests with a delay between them
+setTimeout(() => {
+    console.log(JSON.stringify(pingRequest));
+}, 500);
+
+setTimeout(() => {
+    console.log(JSON.stringify(infoRequest));
+}, 1000);
+
+setTimeout(() => {
+    console.log(JSON.stringify(echoRequest));
+}, 1500);
+
+// Process responses
+process.stdin.on('data', (data) => {
+    try {
+        const response = JSON.parse(data.toString());
+        console.error('Received response:');
+        console.error(JSON.stringify(response, null, 2));
+    } catch (error) {
+        console.error('Error parsing response:', error);
+        console.error('Raw data:', data.toString());
+    }
+});