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/response/sse-parser.ts

@@ -0,0 +1,42 @@
+import { SSEEventData, SSEChunk } from "../types.js";
+import { logDebug, logError } from "../logger.js";
+
+export function parseSseStream(sseText: string): SSEEventData | null {
+  const lines = sseText.split("\n");
+
+  for (const line of lines) {
+    if (line.startsWith("data: ")) {
+      try {
+        const data = JSON.parse(line.substring(6)) as SSEEventData;
+
+        if (data.type === "response.done" || data.type === "response.completed") {
+          logDebug(null, "Found response.done event in SSE stream");
+          return data;
+        }
+      } catch (error) {
+        logError(null, `Failed to parse SSE event: ${line}`);
+      }
+    }
+  }
+
+  logError(null, "No response.done event found in SSE stream");
+  return null;
+}
+
+export function parseSseChunks(sseText: string): SSEChunk[] {
+  const chunks: SSEChunk[] = [];
+  const lines = sseText.split("\n");
+
+  for (const line of lines) {
+    if (line.startsWith("data: ")) {
+      try {
+        const data = JSON.parse(line.substring(6));
+        chunks.push(data as SSEChunk);
+      } catch (error) {
+        logError(null, `Failed to parse SSE chunk: ${line}`);
+      }
+    }
+  }
+
+  return chunks;
+}