Initial commit: SQL audit platform v0.1.0

FastAPI backend with auth, user, instance, ticket, query, dashboard APIs.
React + TypeScript frontend with mock data UI (10 pages).
SQLite + async SQLAlchemy, JWT auth, role-based access control.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend/app/main.py

@@ -0,0 +1,83 @@
+import asyncio
+from contextlib import asynccontextmanager
+from datetime import datetime, timezone
+
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from sqlalchemy import select
+
+from app.core.config import get_settings
+from app.core.database import init_db, async_session
+from app.core.security import hash_password
+from app.models.user import User
+from app.models.instance import Instance
+from app.models.ticket import Ticket
+from app.models.audit_log import AuditLog
+from app.api.v1.router import api_router
+
+settings = get_settings()
+
+
+async def seed_data():
+    """Create default admin user and seed data."""
+    async with async_session() as db:
+        result = await db.execute(select(User).where(User.username == settings.ADMIN_USERNAME))
+        if not result.scalar_one_or_none():
+            users = [
+                User(username="admin", display_name="管理员", role="admin",
+                     hashed_password=hash_password("123456")),
+                User(username="dba", display_name="DBA 张三", role="dba",
+                     hashed_password=hash_password("123456")),
+                User(username="dev1", display_name="开发者 李四", role="developer",
+                     hashed_password=hash_password("123456")),
+                User(username="dev2", display_name="开发者 王五", role="developer",
+                     hashed_password=hash_password("123456")),
+                User(username="auditor", display_name="审计员 赵六", role="developer",
+                     email="auditor@example.com", hashed_password=hash_password("123456")),
+            ]
+            db.add_all(users)
+            await db.commit()
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    # Startup
+    from app.core.database import Base
+    # Import all models so create_all picks them up
+    import app.models.user  # noqa
+    import app.models.instance  # noqa
+    import app.models.ticket  # noqa
+    import app.models.audit_log  # noqa
+
+    await init_db()
+    await seed_data()
+    yield
+
+
+app = FastAPI(
+    title="Web-Lite API",
+    version="1.0.0",
+    description="数据审核平台 API",
+    lifespan=lifespan,
+    docs_url="/docs" if settings.DEBUG else None,
+)
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"] if settings.DEBUG else [],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+app.include_router(api_router)
+
+
+@app.get("/health")
+async def health_check():
+    return {"status": "ok", "version": "1.0.0", "time": datetime.now(timezone.utc).isoformat()}
+
+
+if __name__ == "__main__":
+    import uvicorn
+    uvicorn.run("app.main:app", host="0.0.0.0", port=9000, reload=True)