docs: 添加 README.md

README.md

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+# XCTerminal
+
+A headless Electron terminal application with a web-based UI. Run terminal sessions in the browser with a 3x2 grid layout.
+
+## Features
+
+- Multiple terminal panels in a grid layout (3 columns x 2 rows)
+- Real-time terminal output with PowerShell support
+- WebSocket and HTTP input support
+- Automatic port selection
+- Cross-platform (Windows, macOS, Linux)
+
+## Quick Start
+
+### Development
+
+```bash
+npm install
+npm run dev
+```
+
+### Build
+
+```bash
+npm run electron:build
+```
+
+The built executable will be at `release/XCTerminal.exe`.
+
+### Usage
+
+```bash
+# Run with default port (3002)
+./release/XCTerminal.exe
+
+# Specify port
+./release/XCTerminal.exe --port=8080
+
+# Or use environment variable
+PORT=8080 ./release/XCTerminal.exe
+```
+
+Then open `http://localhost:3002` (or your specified port) in your browser.
+
+## Project Structure
+
+```
+XCTerminal/
+├── electron/          # Electron main process
+│   ├── main.js       # Main entry point
+│   └── preload.js    # Preload script
+├── src/              # React frontend
+│   ├── App.tsx       # Main app component
+│   └── components/   # UI components
+├── server/           # Standalone server (optional)
+│   └── index.js      # Server entry point
+└── release/          # Built executables
+```
+
+## Tech Stack
+
+- Electron (headless mode)
+- React 19
+- Vite
+- Ghostty Web (terminal emulation)
+- node-pty (PTY management)
+- Express (HTTP server)
+- WebSocket (real-time I/O)
+
+## License
+
+Private - All rights reserved.