```

feat(auth): 添加用户权限获取接口并完善JWT令牌角色信息

- 在JWT令牌中添加用户角色信息
- 新增get_my_permissions接口用于获取当前用户权限码列表
- 重构认证回调逻辑，增加错误日志记录
- 更新用户信息获取接口使用Authorization头验证
```

backend/app/models/audit_log.py

@@ -0,0 +1,52 @@
+"""审计日志数据库模型"""
+from sqlalchemy import Column, Integer, String, Text, TIMESTAMP, Index
+from sqlalchemy.dialects.postgresql import JSONB
+from sqlalchemy.sql import func
+from app.core.database import Base
+
+
+class AuditLog(Base):
+    __tablename__ = "audit_logs"
+
+    id = Column(Integer, primary_key=True, index=True)
+
+    # 用户信息
+    user_id = Column(String(100), nullable=False)
+    username = Column(String(100), nullable=False)
+    user_role = Column(String(50))
+
+    # 操作信息
+    action_time = Column(TIMESTAMP, nullable=False, server_default=func.now())
+    action_type = Column(String(50), nullable=False)    # auth/device/olt/user/system/inventory
+    action_subtype = Column(String(50))                 # create/update/delete/login/...
+
+    # 请求信息
+    ip_address = Column(String(45))
+    user_agent = Column(Text)
+    request_method = Column(String(10))
+    request_path = Column(String(500))
+
+    # 操作结果
+    status = Column(String(20), nullable=False)         # success/failed/error
+    status_code = Column(Integer)
+
+    # 资源信息
+    resource_type = Column(String(50))
+    resource_id = Column(String(100))
+    resource_name = Column(String(200))
+
+    # 日志内容
+    description = Column(Text, nullable=False)
+    request_params = Column(JSONB)
+    response_data = Column(JSONB)
+    error_message = Column(Text)
+
+    created_at = Column(TIMESTAMP, nullable=False, server_default=func.now())
+
+    __table_args__ = (
+        Index("idx_audit_logs_action_time", "action_time"),
+        Index("idx_audit_logs_user_id", "user_id"),
+        Index("idx_audit_logs_action_type", "action_type"),
+        Index("idx_audit_logs_resource_type", "resource_type"),
+        Index("idx_audit_logs_status", "status"),
+    )