Initial commit: 浼佷笟寰俊 AI 鏈哄櫒浜哄姪鐞?MVP

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/models/user.py

@@ -0,0 +1,22 @@
+"""后台用户：id(uuid)、username、password_hash、role、is_active、created_at。"""
+import uuid
+from datetime import datetime
+
+from sqlalchemy import String, Boolean, DateTime
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.models.base import Base
+
+
+class User(Base):
+    __tablename__ = "users"
+
+    id: Mapped[uuid.UUID] = mapped_column(
+        UUID(as_uuid=True), primary_key=True, default=uuid.uuid4
+    )
+    username: Mapped[str] = mapped_column(String(64), unique=True, nullable=False, index=True)
+    password_hash: Mapped[str] = mapped_column(String(256), nullable=False)
+    role: Mapped[str] = mapped_column(String(32), nullable=False, default="admin")
+    is_active: Mapped[bool] = mapped_column(Boolean, nullable=False, default=True)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=datetime.utcnow)