做了文件结构的调整，新建了service文件夹存放内部服务。添加了git ignore

services/auth.py

@@ -0,0 +1,11 @@
+from passlib.context import CryptContext
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+def get_password_hash(password: str) -> str:
+    """Generate password hash using bcrypt"""
+    return pwd_context.hash(password)
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    """Verify password against stored hash"""
+    return pwd_context.verify(plain_password, hashed_password)

services/init_db.py

@@ -0,0 +1,26 @@
+from sqlalchemy.ext.asyncio import AsyncEngine
+from ..models.user import Base, User, UserRole
+from sqlalchemy import select
+from config import SYSTEM_ADMIN_CONFIG
+from services.auth import get_password_hash
+
+async def init_db(engine: AsyncEngine):
+    """Initialize database"""
+    async with engine.begin() as conn:
+        # Create all tables
+        await conn.run_sync(Base.metadata.create_all)
+
+        # Check if system admin exists
+        result = await conn.execute(
+            select(User).where(User.role == UserRole.SYSTEM_ADMIN)
+        )
+        if not result.scalars().first():
+            # Create default system admin
+            admin = User(
+                username=SYSTEM_ADMIN_CONFIG['username'],
+                password=get_password_hash(SYSTEM_ADMIN_CONFIG['password']),
+                role=UserRole.SYSTEM_ADMIN,
+                description=SYSTEM_ADMIN_CONFIG['description']
+            )
+            conn.add(admin)
+            await conn.commit()