chore: 初始化项目结构并添加基础配置文件

添加后端API和前端项目的初始目录结构，包括应用层模块、工具模块和模型定义
配置前后端的.dockerignore文件以排除开发环境文件
添加前端样式文件，包括字体、Tailwind CSS和主题配置
初始化Python虚拟环境中的类型标记文件

后端-孕期报告解读-api/app/main.py

@@ -0,0 +1,114 @@
+import logging
+import os
+import time
+from contextlib import asynccontextmanager
+
+from fastapi import FastAPI, Request
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.staticfiles import StaticFiles
+from fastapi.responses import FileResponse, JSONResponse
+
+from app.config import settings
+from app.database import init_db
+from app.routers import (
+    auth,
+    user,
+    report,
+    analysis,
+    chat,
+    health_records,
+    calendar,
+    doctor,
+    share,
+)
+
+# 日志配置
+logging.basicConfig(
+    level=logging.DEBUG if settings.debug else logging.INFO,
+    format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
+    datefmt="%Y-%m-%d %H:%M:%S",
+)
+logger = logging.getLogger("孕育无忧")
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    logger.info("服务启动中...")
+    await init_db()
+    os.makedirs(settings.upload_dir, exist_ok=True)
+    logger.info("服务启动完成 http://%s:%s", settings.host, settings.port)
+    yield
+    logger.info("服务关闭")
+
+
+app = FastAPI(
+    title="孕育无忧 API",
+    description="孕期健康检查报告解读后端服务",
+    version="1.0.0",
+    lifespan=lifespan,
+)
+
+# CORS 配置
+cors_origins = (
+    ["*"]
+    if settings.cors_origins == "*"
+    else [o.strip() for o in settings.cors_origins.split(",") if o.strip()]
+)
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=cors_origins,
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+
+# 请求日志中间件
+@app.middleware("http")
+async def log_requests(request: Request, call_next):
+    start = time.time()
+    response = await call_next(request)
+    duration = round((time.time() - start) * 1000)
+    logger.info(
+        "%s %s → %s (%dms)",
+        request.method,
+        request.url.path,
+        response.status_code,
+        duration,
+    )
+    return response
+
+
+# 全局异常处理
+@app.exception_handler(Exception)
+async def global_exception_handler(request: Request, exc: Exception):
+    logger.error("未处理异常 %s %s: %s", request.method, request.url.path, exc, exc_info=True)
+    return JSONResponse(
+        status_code=500,
+        content={"detail": "服务器内部错误，请稍后重试"},
+    )
+
+app.mount("/uploads", StaticFiles(directory=settings.upload_dir), name="uploads")
+
+app.include_router(auth.router, prefix="/api/auth", tags=["认证"])
+app.include_router(user.router, prefix="/api/user", tags=["用户"])
+app.include_router(report.router, prefix="/api/report", tags=["报告"])
+app.include_router(analysis.router, prefix="/api/analysis", tags=["AI解读"])
+app.include_router(chat.router, prefix="/api/chat", tags=["AI对话"])
+app.include_router(health_records.router, prefix="/api/health-records", tags=["健康档案"])
+app.include_router(calendar.router, prefix="/api/calendar", tags=["产检日历"])
+app.include_router(doctor.router, prefix="/api/doctor", tags=["专家咨询"])
+app.include_router(share.router, prefix="/api/share", tags=["分享"])
+
+
+@app.get("/api/health")
+async def health_check():
+    return {"status": "ok", "service": "孕育无忧 API"}
+
+
+@app.get("/")
+async def web_demo():
+    """Web 体验页面"""
+    return FileResponse(
+        os.path.join(os.path.dirname(__file__), "static", "index.html")
+    )