feat: add Homarr assistant

apps/docs/docs/management/mcp.mdx

@@ -12,6 +12,10 @@ Homarr exposes a [Model Context Protocol](https://modelcontextprotocol.io) serve
 
 With MCP, you can ask your AI assistant to manage apps, integrations, users, boards, Docker containers, media servers, DNS settings, and more - all through Homarr's existing tRPC API, now exposed as 50+ AI-callable tools.
 
+The optional [Homarr Assistant](./settings#homarr-assistant) uses these same tool definitions internally.
+Unlike external MCP clients, it uses the current Homarr session directly and asks for in-conversation
+approval before running mutating procedures.
+
 ## Getting Started
 
 The MCP endpoint lives under the **API** page at `Management` → `Tools` → `API` → **MCP** tab.