feat: AI Worker 平台 MVP v1.0.0 - 多租户/项目管理/AI Worker/任务编排/HITL审核/成本治理

backend/app/models/user.py

@@ -0,0 +1,33 @@
+"""User model - represents both humans and AI worker accounts."""
+from sqlalchemy import Column, String, Boolean, Integer, Text, ForeignKey
+from app.models.base import Base, TimestampMixin, TenantMixin
+
+
+class User(Base, TimestampMixin, TenantMixin):
+    """A user can be a human or an AI worker proxy.
+
+    - Humans: have email + password, role determines permissions
+    - AI: linked to AIWorker via worker_id, role is typically 'worker'
+
+    Roles: super_admin, tenant_admin, project_manager, reviewer, worker
+    """
+    __tablename__ = "users"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    email = Column(String(255), nullable=False, index=True)
+    username = Column(String(100), nullable=False)
+    hashed_password = Column(String(255), nullable=True)  # null for AI users
+    role = Column(String(50), nullable=False, default="worker")
+
+    # "human" or "ai"
+    user_type = Column(String(20), nullable=False, default="human")
+
+    # If AI user, link to the AIWorker record
+    worker_id = Column(Integer, ForeignKey("ai_workers.id"), nullable=True)
+
+    is_active = Column(Boolean, default=True, nullable=False)
+    avatar = Column(String(500), nullable=True)
+    phone = Column(String(50), nullable=True)
+
+    def __repr__(self):
+        return f"<User {self.email} ({self.role})>"