install x402node-mcp on VS Code

Requires Node 18+ on your system so npx can fetch the package on first run. VS Code (Copilot) uses a `servers` root key with an explicit `type` field — different from the `mcpServers` shape used by Claude Desktop and Cursor. Paste the config below, then follow the reload step to register x402node-mcp.

{
  "servers": {
    "x402-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "x402node-mcp"
      ],
      "env": {
        "X402_PRIVATE_KEY": "0xYOUR_BASE_PRIVATE_KEY"
      }
    }
  }
}