feat: 实现ChatGPT Codex路由器的核心功能

- 添加完整的项目基础结构，包括配置、类型定义和常量
- 实现OAuth认证流程和令牌管理
- 开发请求转换和响应处理逻辑
- 添加SSE流处理和ChatCompletions API转换
- 实现模型映射和提示指令系统
- 包含Docker部署配置和快速启动文档
- 添加自动登录功能和测试脚本

package.json

@@ -0,0 +1,42 @@
+{
+  "name": "chatgpt-codex-router",
+  "version": "1.0.0",
+  "description": "OpenAI-compatible API router that forwards requests to ChatGPT backend with OAuth authentication",
+  "main": "./dist/index.js",
+  "types": "./dist/index.d.ts",
+  "type": "module",
+  "license": "MIT",
+  "scripts": {
+    "dev": "tsx watch src/index.ts",
+    "build": "tsc && mkdir -p dist/public && cp public/oauth-success.html dist/public/",
+    "start": "node dist/index.js",
+    "typecheck": "tsc --noEmit",
+    "lint": "eslint src --ext .ts",
+    "test": "vitest run",
+    "test:watch": "vitest"
+  },
+  "engines": {
+    "node": ">=20.0.0"
+  },
+  "dependencies": {
+    "hono": "^4.10.4",
+    "@openauthjs/openauth": "^0.4.3",
+    "dotenv": "^16.4.5"
+  },
+  "devDependencies": {
+    "@types/node": "^24.6.2",
+    "typescript": "^5.9.3",
+    "vitest": "^3.2.4",
+    "eslint": "^9.15.0",
+    "prettier": "^3.4.2",
+    "@typescript-eslint/eslint-plugin": "^8.15.0",
+    "tsx": "^4.19.2"
+  },
+  "files": [
+    "dist/",
+    "public/",
+    "docker/",
+    "README.md",
+    "LICENSE"
+  ]
+}