feat: 全屏个股详情预览 + Tailwind 改版 + 账号鉴权

backend/app/main.py

@@ -1,22 +1,22 @@
-"""FastAPI 入口。
-
-启动时自动建表（MVP 用 create_all；阶段1 切 Alembic 迁移，含 TimescaleDB hypertable）。
-"""
+"""FastAPI 入口。数据库结构统一由 Alembic 管理。"""
 from contextlib import asynccontextmanager
 
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
+from sqlalchemy import text
 
 from .api import router
-from .db import Base, engine
-from . import models  # noqa: F401  —— 注册 ORM 到 Base.metadata
+from .auth_api import router as auth_router
+from .config import settings
+from .db import engine
 
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
-    async with engine.begin() as conn:
-        await conn.run_sync(Base.metadata.create_all)
+    async with engine.connect() as conn:
+        await conn.execute(text("SELECT 1"))
     yield
+    await engine.dispose()
 
 
 app = FastAPI(
@@ -24,20 +24,28 @@ app = FastAPI(
     description="历史回测 + 回放式模拟平台（A 股为主，不做实盘）",
     version="0.1.0",
     lifespan=lifespan,
+    docs_url="/docs" if settings.expose_api_docs else None,
+    redoc_url=None,
+    openapi_url="/openapi.json" if settings.expose_api_docs else None,
 )
 
-# 开发期允许前端 dev server 跨域；上线收窄 origins
 app.add_middleware(
     CORSMiddleware,
-    allow_origins=["*"],
+    allow_origins=settings.allowed_origins,
     allow_credentials=True,
     allow_methods=["*"],
     allow_headers=["*"],
 )
 
+app.include_router(auth_router)
 app.include_router(router)
 
 
+@app.get("/api/health")
+async def health() -> dict:
+    return {"status": "ok"}
+
+
 @app.get("/")
 async def root() -> dict:
     return {"name": "Stock Backtest API", "docs": "/docs"}