docs: update README with full feature docs

README.md

@@ -1,6 +1,77 @@
 # agent-react-devtools
 
-CLI tool for AI agents to inspect React component trees and profile rendering performance. Connects to running React apps via the React DevTools protocol.
+CLI tool and MCP server for AI agents to inspect React component trees and profile rendering performance. Connects to running React apps via the React DevTools protocol.
+
+## Features
+
+- **Component tree** — View the full React component hierarchy with types, keys, and parent/child relationships
+- **Component inspection** — Inspect props, state, and hooks of any component
+- **Search** — Find components by display name (fuzzy or exact match)
+- **Profiling** — Start/stop profiling sessions, get per-component render reports, find slowest components, most re-rendered components, commit timelines, and per-commit breakdowns
+- **MCP server** — Expose all functionality as MCP tools for AI agent integration
+- **Token-efficient output** — Compact formatting designed for LLM consumption
+
+## Architecture
+
+```
+CLI / MCP Server
+      |
+   IPC (Unix socket)
+      |
+   Daemon (persistent process)
+      |
+   WebSocket (port 8097)
+      |
+   React App (via react-devtools-core)
+```
+
+## CLI Usage
+
+```sh
+# Start the daemon
+agent-react-devtools start [--port 8097]
+
+# Check connection status
+agent-react-devtools status
+
+# View component tree
+agent-react-devtools get tree [--depth N]
+
+# Inspect a component (by label or ID)
+agent-react-devtools get component @c1
+
+# Search for components
+agent-react-devtools find Button [--exact]
+
+# Component count by type
+agent-react-devtools count
+
+# Profiling
+agent-react-devtools profile start [session-name]
+agent-react-devtools profile stop
+agent-react-devtools profile report @c1
+agent-react-devtools profile slow [--limit N]
+agent-react-devtools profile rerenders [--limit N]
+agent-react-devtools profile timeline [--limit N]
+agent-react-devtools profile commit #3 [--limit N]
+
+# MCP server (stdio transport)
+agent-react-devtools serve-mcp
+
+# Stop the daemon
+agent-react-devtools stop
+```
+
+## Connecting a React App
+
+Add `react-devtools-core` to your app and initialize before React loads:
+
+```ts
+import { initialize, connectToDevTools } from 'react-devtools-core';
+
+initialize();
+connectToDevTools({ port: 8097 });
+```
 
 ## Development