feat(admin): add admin endpoint to list user devices with JPush registration IDs

- Add AdminDeviceTokenResponse DTO including push_token (RegistrationID) for push debugging
- Add DeviceTokenToAdminResponse and DeviceTokensToAdminResponse converters
- Inject PushService into AdminUserHandler for retrieving user devices
- Register GET /api/v1/admin/users/:id/devices route for querying target user's device tokens

internal/service/chat_service.go

@@ -627,13 +627,9 @@ func (s *chatServiceImpl) inlinePush(ctx context.Context, conv *model.Conversati
 			}
 			allTargetIDs = append(allTargetIDs, p.UserID)
 		}
-		var offlineTargetIDs []string
-		if s.wsHub != nil && len(allTargetIDs) > 0 {
-			_, offlineTargetIDs = s.wsHub.FilterOnline(allTargetIDs)
-		} else {
-			offlineTargetIDs = allTargetIDs
-		}
-		if len(offlineTargetIDs) > 0 {
+		// 直接对所有参与者推送（不按 WS 在线过滤）：
+		// 多设备场景下某端在线不代表所有端在线，由 PushChatMessage 推送到用户所有移动设备
+		if len(allTargetIDs) > 0 {
 			go func(ids []string, sender ChatMessageSender, gid string, gavatar string) {
 				for _, uid := range ids {
 					if pushErr := s.pushSvc.PushChatMessage(context.Background(), uid, conversationID, &sender, convType, convName, message, gid, gavatar); pushErr != nil {
@@ -644,7 +640,7 @@ func (s *chatServiceImpl) inlinePush(ctx context.Context, conv *model.Conversati
 						)
 					}
 				}
-			}(offlineTargetIDs, sender, groupID, groupAvatar)
+			}(allTargetIDs, sender, groupID, groupAvatar)
 		}
 	}
 }