feat(mcp): register ast-grep as built-in MCP

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/plugin-handlers/config-handler.ts

@@ -38,7 +38,7 @@ export function createConfigHandler(deps: ConfigHandlerDeps) {
     });
 
     applyToolConfig({ config, pluginConfig, agentResult });
-    await applyMcpConfig({ config, pluginConfig, pluginComponents });
+    await applyMcpConfig({ config, pluginConfig, ctx, pluginComponents });
     await applyCommandConfig({ config, pluginConfig, ctx, pluginComponents });
 
     config.formatter = formatterConfig;