Revert "fix: restore default export for Docusaurus plugin compatibility"

This reverts commit fedd767.

Author: scalvert

src/index.ts

@@ -1,6 +1,3 @@
-// Default export for Docusaurus plugin loading (requires default export)
-export { default } from './plugin/docusaurus-plugin.js';
-// Named export for explicit imports
 export { default as mcpServerPlugin } from './plugin/docusaurus-plugin.js';
 export { McpDocsServer } from './mcp/server.js';