iniciada creacion del mcp

mcp/README.md

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+# Planilla MCP Server
+
+This module exposes the planilla API through the Model Context Protocol (MCP).
+By default it runs an HTTP server using the Streamable HTTP transport. You can
+switch to STDIO communication by passing `--stdio` when starting.
+
+## Usage
+
+```bash
+npm install
+npm start                # HTTP mode on PORT (default 5000)
+npm start -- --stdio     # STDIO mode
+```