docs: add desktop app download section, update model table

- Add Desktop App (GitHub Releases) download section to Quick Start
- Add Desktop badge (Win | Mac | Linux)
- Update model table: gpt-5.4 as default, add codex-spark, add reasoning efforts column
- Update Claude Code mapping: Opus → gpt-5.4, Sonnet → gpt-5.3-codex
- Sync English README with same changes + add Claude Code setup section

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

README.md

@@ -9,6 +9,7 @@
     <img src="https://img.shields.io/badge/Language-TypeScript-3178C6?style=flat-square&logo=typescript&logoColor=white" alt="TypeScript">
     <img src="https://img.shields.io/badge/Framework-Hono-E36002?style=flat-square" alt="Hono">
     <img src="https://img.shields.io/badge/Docker-Supported-2496ED?style=flat-square&logo=docker&logoColor=white" alt="Docker">
+    <img src="https://img.shields.io/badge/Desktop-Win%20%7C%20Mac%20%7C%20Linux-8A2BE2?style=flat-square&logo=electron&logoColor=white" alt="Desktop">
     <img src="https://img.shields.io/badge/License-Non--Commercial-red?style=flat-square" alt="License">
   </p>
 
@@ -35,6 +36,20 @@
 
 ## 🚀 快速开始 (Quick Start)
 
+### 桌面应用（最简单）
+
+从 [GitHub Releases](https://github.com/icebear0828/codex-proxy/releases) 下载安装包，开箱即用：
+
+| 平台 | 安装包 |
+|------|--------|
+| Windows | `Codex Proxy Setup x.x.x.exe` |
+| macOS | `Codex Proxy-x.x.x.dmg` |
+| Linux | `Codex Proxy-x.x.x.AppImage` |
+
+安装后打开应用，使用 ChatGPT 账号登录即可。桌面端默认监听 `127.0.0.1:8080`，仅本机访问。
+
+### CLI / 服务器部署
+
 ```bash
 git clone https://github.com/icebear0828/codex-proxy.git
 cd codex-proxy
@@ -144,15 +159,16 @@ curl http://localhost:8080/v1/chat/completions \
 
 ## 📦 可用模型 (Available Models)
 
-| 模型 ID | 别名 | 说明 |
-|---------|------|------|
-| `gpt-5.3-codex` | `codex` | 最新旗舰 agentic 编程模型（默认） |
-| `gpt-5.2-codex` | — | 上一代 agentic 编程模型 |
-| `gpt-5.1-codex-max` | `codex-max` | 深度推理编程模型 |
-| `gpt-5.2` | — | 通用旗舰模型 |
-| `gpt-5.1-codex-mini` | `codex-mini` | 轻量快速编程模型 |
+| 模型 ID | 别名 | 推理等级 | 说明 |
+|---------|------|---------|------|
+| `gpt-5.4` | `codex` | minimal / low / medium / high | 最新旗舰编程模型（默认） |
+| `gpt-5.3-codex` | — | low / medium / high | 上一代旗舰 agentic 编程模型 |
+| `gpt-5.3-codex-spark` | — | minimal / low | 超轻量编程模型 |
+| `gpt-5.2-codex` | — | low / medium / high | agentic 编程模型 |
+| `gpt-5.1-codex-max` | `codex-max` | low / medium / high | 深度推理编程模型 |
+| `gpt-5.1-codex-mini` | `codex-mini` | low / medium / high | 轻量快速编程模型 |
 
-> 模型列表会随 Codex Desktop 版本更新自动同步。
+> 模型列表会随 Codex Desktop 版本更新自动同步。后端也会动态获取最新模型目录。
 
 ## 🔗 客户端接入 (Client Setup)
 
@@ -163,8 +179,8 @@ curl http://localhost:8080/v1/chat/completions \
 ```bash
 export ANTHROPIC_BASE_URL=http://localhost:8080
 export ANTHROPIC_API_KEY=your-api-key
-export ANTHROPIC_MODEL=claude-opus-4-6     # Opus → gpt-5.3-codex（默认）
-# export ANTHROPIC_MODEL=claude-sonnet-4-6   # Sonnet → gpt-5.2-codex
+export ANTHROPIC_MODEL=claude-opus-4-6     # Opus → gpt-5.4（默认）
+# export ANTHROPIC_MODEL=claude-sonnet-4-6   # Sonnet → gpt-5.3-codex
 # export ANTHROPIC_MODEL=claude-haiku-4-5-20251001  # Haiku → gpt-5.1-codex-mini
 
 claude   # 启动 Claude Code
@@ -172,8 +188,8 @@ claude   # 启动 Claude Code
 
 | Claude Code 模型 | 映射到 Codex 模型 |
 |------------------|------------------|
-| Opus (`claude-opus-4-6`) | `gpt-5.3-codex` |
-| Sonnet (`claude-sonnet-4-6`) | `gpt-5.2-codex` |
+| Opus (`claude-opus-4-6`) | `gpt-5.4` |
+| Sonnet (`claude-sonnet-4-6`) | `gpt-5.3-codex` |
 | Haiku (`claude-haiku-4-5-20251001`) | `gpt-5.1-codex-mini` |
 
 > 也可以在控制面板 (`http://localhost:8080`) 的 **Anthropic SDK Setup** 卡片中一键复制环境变量。

README_EN.md

@@ -8,6 +8,8 @@
     <img src="https://img.shields.io/badge/Runtime-Node.js_18+-339933?style=flat-square&logo=nodedotjs&logoColor=white" alt="Node.js">
     <img src="https://img.shields.io/badge/Language-TypeScript-3178C6?style=flat-square&logo=typescript&logoColor=white" alt="TypeScript">
     <img src="https://img.shields.io/badge/Framework-Hono-E36002?style=flat-square" alt="Hono">
+    <img src="https://img.shields.io/badge/Docker-Supported-2496ED?style=flat-square&logo=docker&logoColor=white" alt="Docker">
+    <img src="https://img.shields.io/badge/Desktop-Win%20%7C%20Mac%20%7C%20Linux-8A2BE2?style=flat-square&logo=electron&logoColor=white" alt="Desktop">
     <img src="https://img.shields.io/badge/License-Non--Commercial-red?style=flat-square" alt="License">
   </p>
 
@@ -34,21 +36,55 @@ Just a ChatGPT account and this proxy — your own personal AI coding assistant
 
 ## 🚀 Quick Start
 
+### Desktop App (Easiest)
+
+Download the installer from [GitHub Releases](https://github.com/icebear0828/codex-proxy/releases) — no setup required:
+
+| Platform | Installer |
+|----------|-----------|
+| Windows | `Codex Proxy Setup x.x.x.exe` |
+| macOS | `Codex Proxy-x.x.x.dmg` |
+| Linux | `Codex Proxy-x.x.x.AppImage` |
+
+Open the app and log in with your ChatGPT account. The desktop app listens on `127.0.0.1:8080` (local access only).
+
+### CLI / Server Deployment
+
 ```bash
-# 1. Clone the repo
 git clone https://github.com/icebear0828/codex-proxy.git
 cd codex-proxy
+```
 
-# 2. Install dependencies
-npm install
+#### Docker (Recommended)
 
-# 3. Start the proxy (dev mode with hot reload)
-npm run dev
+```bash
+docker compose up -d
+# Open http://localhost:8080 to log in
+```
 
-# 4. Open the dashboard and log in with your ChatGPT account
-#    http://localhost:8080
+#### macOS / Linux
 
-# 5. Test a request
+```bash
+npm install                # Install backend deps + auto-download curl-impersonate
+cd web && npm install && cd ..   # Install frontend deps
+npm run dev                # Dev mode (hot reload)
+# Or: npm run build && npm start  # Production mode
+```
+
+#### Windows
+
+```bash
+npm install                # Install backend deps
+cd web && npm install && cd ..   # Install frontend deps
+npm run dev                # Dev mode (hot reload)
+```
+
+> On Windows, curl-impersonate is not available. The proxy falls back to system curl. For full TLS impersonation, use Docker or WSL.
+
+### Verify
+
+```bash
+# Open http://localhost:8080, log in with your ChatGPT account, then:
 curl http://localhost:8080/v1/chat/completions \
   -H "Content-Type: application/json" \
   -d '{
@@ -58,12 +94,12 @@ curl http://localhost:8080/v1/chat/completions \
   }'
 ```
 
-> **Cross-container access**: If other Docker containers (e.g., OpenClaw, Cursor Server) need to connect to codex-proxy, use the host's LAN IP (e.g., `http://192.168.x.x:8080/v1`) instead of `host.docker.internal` to avoid Docker DNS resolution issues.
+> **Cross-container access**: If other Docker containers need to connect to codex-proxy, use the host's LAN IP (e.g., `http://192.168.x.x:8080/v1`) instead of `host.docker.internal`.
 
 ## 🌟 Features
 
 ### 1. 🔌 Full Protocol Compatibility
-- Complete `/v1/chat/completions` and `/v1/models` endpoint support
+- Compatible with `/v1/chat/completions` (OpenAI), `/v1/messages` (Anthropic), and Gemini formats
 - SSE streaming output, works with all OpenAI SDKs and clients
 - Automatic bidirectional translation between Chat Completions and Codex Responses API
 
@@ -123,15 +159,41 @@ curl http://localhost:8080/v1/chat/completions \
 
 ## 📦 Available Models
 
-| Model ID | Alias | Description |
-|----------|-------|-------------|
-| `gpt-5.2-codex` | `codex` | Latest agentic coding model (default) |
-| `gpt-5.1-codex-mini` | `codex-mini` | Lightweight, fast coding model |
+| Model ID | Alias | Reasoning Efforts | Description |
+|----------|-------|-------------------|-------------|
+| `gpt-5.4` | `codex` | minimal / low / medium / high | Latest flagship coding model (default) |
+| `gpt-5.3-codex` | — | low / medium / high | Previous-gen flagship agentic coding model |
+| `gpt-5.3-codex-spark` | — | minimal / low | Ultra-lightweight coding model |
+| `gpt-5.2-codex` | — | low / medium / high | Agentic coding model |
+| `gpt-5.1-codex-max` | `codex-max` | low / medium / high | Deep reasoning coding model |
+| `gpt-5.1-codex-mini` | `codex-mini` | low / medium / high | Lightweight, fast coding model |
 
-> Models are automatically synced when new Codex Desktop versions are released.
+> Models are automatically synced when new Codex Desktop versions are released. The backend also dynamically fetches the latest model catalog.
 
 ## 🔗 Client Setup
 
+### Claude Code
+
+Set environment variables to route Claude Code through codex-proxy:
+
+```bash
+export ANTHROPIC_BASE_URL=http://localhost:8080
+export ANTHROPIC_API_KEY=your-api-key
+export ANTHROPIC_MODEL=claude-opus-4-6     # Opus → gpt-5.4 (default)
+# export ANTHROPIC_MODEL=claude-sonnet-4-6   # Sonnet → gpt-5.3-codex
+# export ANTHROPIC_MODEL=claude-haiku-4-5-20251001  # Haiku → gpt-5.1-codex-mini
+
+claude   # Launch Claude Code
+```
+
+| Claude Code Model | Maps to Codex Model |
+|-------------------|---------------------|
+| Opus (`claude-opus-4-6`) | `gpt-5.4` |
+| Sonnet (`claude-sonnet-4-6`) | `gpt-5.3-codex` |
+| Haiku (`claude-haiku-4-5-20251001`) | `gpt-5.1-codex-mini` |
+
+> You can also copy environment variables from the **Anthropic SDK Setup** card in the dashboard (`http://localhost:8080`).
+
 ### Cursor
 
 Settings → Models → OpenAI API Base: