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

src/request/model-map.ts

@@ -0,0 +1,77 @@
+export const MODEL_MAP: Record<string, string> = {
+  "gpt-5.1": "gpt-5.1",
+  "gpt-5.1-none": "gpt-5.1",
+  "gpt-5.1-low": "gpt-5.1",
+  "gpt-5.1-medium": "gpt-5.1",
+  "gpt-5.1-high": "gpt-5.1",
+
+  "gpt-5.2": "gpt-5.2",
+  "gpt-5.2-none": "gpt-5.2",
+  "gpt-5.2-low": "gpt-5.2",
+  "gpt-5.2-medium": "gpt-5.2",
+  "gpt-5.2-high": "gpt-5.2",
+  "gpt-5.2-xhigh": "gpt-5.2",
+
+  "gpt-5.1-codex": "gpt-5.1-codex",
+  "gpt-5.1-codex-low": "gpt-5.1-codex",
+  "gpt-5.1-codex-medium": "gpt-5.1-codex",
+  "gpt-5.1-codex-high": "gpt-5.1-codex",
+
+  "gpt-5.1-codex-max": "gpt-5.1-codex-max",
+  "gpt-5.1-codex-max-low": "gpt-5.1-codex-max",
+  "gpt-5.1-codex-max-medium": "gpt-5.1-codex-max",
+  "gpt-5.1-codex-max-high": "gpt-5.1-codex-max",
+  "gpt-5.1-codex-max-xhigh": "gpt-5.1-codex-max",
+
+  "gpt-5.1-codex-mini": "gpt-5.1-codex-mini",
+  "gpt-5.1-codex-mini-medium": "gpt-5.1-codex-mini",
+  "gpt-5.1-codex-mini-high": "gpt-5.1-codex-mini",
+
+  "gpt-5.2-codex": "gpt-5.2-codex",
+  "gpt-5.2-codex-low": "gpt-5.2-codex",
+  "gpt-5.2-codex-medium": "gpt-5.2-codex",
+  "gpt-5.2-codex-high": "gpt-5.2-codex",
+  "gpt-5.2-codex-xhigh": "gpt-5.2-codex",
+};
+
+export function getNormalizedModel(modelId: string): string | undefined {
+  try {
+    if (MODEL_MAP[modelId]) {
+      return MODEL_MAP[modelId];
+    }
+
+    const lowerModelId = modelId.toLowerCase();
+    const match = Object.keys(MODEL_MAP).find(
+      (key) => key.toLowerCase() === lowerModelId,
+    );
+
+    return match ? MODEL_MAP[match] : undefined;
+  } catch {
+    return undefined;
+  }
+}
+
+export function isKnownModel(modelId: string): boolean {
+  return getNormalizedModel(modelId) !== undefined;
+}
+
+export function getModelFamily(
+  normalizedModel: string,
+): "gpt-5.1" | "gpt-5.2" | "codex" | "codex-max" | "codex-mini" | "gpt-5.2-codex" {
+  if (normalizedModel.includes("gpt-5.2-codex")) {
+    return "gpt-5.2-codex";
+  }
+  if (normalizedModel.includes("codex-max")) {
+    return "codex-max";
+  }
+  if (normalizedModel.includes("codex") && normalizedModel.includes("mini")) {
+    return "codex-mini";
+  }
+  if (normalizedModel.includes("codex")) {
+    return "codex";
+  }
+  if (normalizedModel.includes("gpt-5.2")) {
+    return "gpt-5.2";
+  }
+  return "gpt-5.1";
+}