fix: add can_view_cloud_data to login and profile API responses

- Add can_view_cloud_data field to auth login response
- Add can_view_cloud_data field to agent profile response
- Fetch latest user permissions from /agent/profile on agent layout mount
- Update localStorage with latest can_view_cloud_data value

backend/internal/service/auth.go

@@ -56,13 +56,14 @@ func (s *AuthService) Login(username, password, agentPath string) (map[string]in
 	// 返回用户信息和令牌
 	return map[string]interface{}{
 		"user": map[string]interface{}{
-			"id":              user.ID,
-			"username":        user.Username,
-			"email":           user.Email,
-			"avatar":          user.Avatar,
-			"role":            user.Role,
-			"status":          user.Status,
-			"parent_agent_id": user.ParentAgentID,
+			"id":                 user.ID,
+			"username":           user.Username,
+			"email":              user.Email,
+			"avatar":             user.Avatar,
+			"role":               user.Role,
+			"status":             user.Status,
+			"parent_agent_id":    user.ParentAgentID,
+			"can_view_cloud_data": user.CanViewCloudData,
 		},
 		"token": token,
 	}, nil