Add MCPcat for analytics on MCP server

[JakeSCahill]

This pull request adds support for MCPcat analytics tracking to our docs MCP server. MCPcat is an open-source analytics platform for monitoring MCP usage. The integration is optional and only activates if the MCPCAT_PROJECT environment variable is set.

MCPcat analytics integration:

• Added mcpcat as a dependency in package.json to enable MCPcat analytics tracking.
• Imported the MCPcat library and read the MCPCAT_PROJECT environment variable in netlify/edge-functions/mcp.js.
• Initialized MCPcat tracking on the MCP server if MCPCAT_PROJECT is present, allowing usage analytics to be collected.

Testing

1. Start a local MCP Inspector

   npx @modelcontextprotocol/inspector
   

   You should see something like the following:

   Starting MCP inspector...
   🔗 Open inspector with token pre-filled:
      http://localhost:6274/?MCP_PROXY_AUTH_TOKEN=03bc12a6c556d42647540d39994df116c48c5f2dfcad1eea29f49ead7ce117a2
   

2. Open that address.

3. Change the transport type to Streamable HTTP.

4. Enter the following URL:

   https://deploy-preview-131--redpanda-documentation.netlify.app/mcp
   

5. Click Connect

6. Test the tool by providing a question and some context.
   

7. Log into MCPcat to see details about your session.
   

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[naji247]

@JakeSCahill this will work with the following now (and no need to pass a null identify step as it's already omitted this way:

    const mcpcat = await import(
      "https://esm.sh/[email protected]?target=deno&conditions=browser&bundle"
    );
    mcpcat.track(server, MCPCAT_PROJECT);