添加API主入口文件

api/main.py

@@ -0,0 +1,44 @@
+"""
+FastAPI 应用入口
+"""
+import os
+from dotenv import load_dotenv
+
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+# 加载环境变量
+load_dotenv()
+
+from database import init_db
+from routers import websocket, chapters, books, conversations
+
+# 初始化数据库
+init_db()
+
+app = FastAPI(title="Life Echo API", version="1.0.0")
+
+# CORS 配置
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],  # 生产环境应该限制域名
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# 注册路由
+app.websocket("/ws/conversation/{conversation_id}")(websocket.websocket_endpoint)
+app.include_router(conversations.router)
+app.include_router(chapters.router)
+app.include_router(books.router)
+
+
+@app.get("/")
+async def root():
+    return {"message": "Life Echo API", "version": "1.0.0"}
+
+
+@app.get("/health")
+async def health():
+    return {"status": "ok"}