feat(websocket): integrate WebSocket support and refactor SSE handling

- Added WebSocket support by introducing a new WSHandler and related infrastructure.
- Replaced SSE implementations with WebSocket equivalents across message and QR code handlers.
- Updated service and repository layers to utilize WebSocket for real-time messaging.
- Removed obsolete SSE hub and related code, streamlining the application for WebSocket usage.
- Enhanced router to include WebSocket endpoints for real-time communication.

internal/service/qrcode_login_service.go

@@ -9,7 +9,7 @@ import (
 
 	"carrot_bbs/internal/model"
 	"carrot_bbs/internal/pkg/redis"
-	"carrot_bbs/internal/pkg/sse"
+	"carrot_bbs/internal/pkg/ws"
 )
 
 // Lua 脚本：原子性地检查状态并更新为 scanned
@@ -54,7 +54,7 @@ type QRCodeSession struct {
 // QRCodeLoginService 二维码登录服务
 type QRCodeLoginService struct {
 	redis           *redis.Client
-	sseHub          *sse.Hub
+	wsHub          *ws.Hub
 	jwtService      *JWTService
 	userService     UserService
 	activityService UserActivityService
@@ -62,10 +62,10 @@ type QRCodeLoginService struct {
 }
 
 // NewQRCodeLoginService 创建二维码登录服务
-func NewQRCodeLoginService(redis *redis.Client, sseHub *sse.Hub, jwtService *JWTService, userService UserService, activityService UserActivityService, logService *LogService) *QRCodeLoginService {
+func NewQRCodeLoginService(redis *redis.Client, wsHub *ws.Hub, jwtService *JWTService, userService UserService, activityService UserActivityService, logService *LogService) *QRCodeLoginService {
 	return &QRCodeLoginService{
 		redis:           redis,
-		sseHub:          sseHub,
+		wsHub:          wsHub,
 		jwtService:      jwtService,
 		userService:     userService,
 		activityService: activityService,
@@ -170,7 +170,7 @@ func (s *QRCodeLoginService) Scan(ctx context.Context, sessionID, userID string)
 			"avatar":   user.Avatar,
 		},
 	}
-	s.sseHub.PublishToUser(sessionID, "scanned", payload)
+	s.wsHub.PublishToUser(sessionID, "scanned", payload)
 
 	return nil
 }
@@ -242,7 +242,7 @@ func (s *QRCodeLoginService) Confirm(ctx context.Context, sessionID, userID stri
 		RefreshToken: refreshToken,
 		User:         user,
 	}
-	s.sseHub.PublishToUser(sessionID, "confirmed", response)
+	s.wsHub.PublishToUser(sessionID, "confirmed", response)
 
 	return response, nil
 }
@@ -275,14 +275,14 @@ func (s *QRCodeLoginService) Cancel(ctx context.Context, sessionID, userID strin
 	}
 
 	// 推送取消事件
-	s.sseHub.PublishToUser(sessionID, "cancelled", map[string]interface{}{})
+	s.wsHub.PublishToUser(sessionID, "cancelled", map[string]interface{}{})
 
 	return nil
 }
 
-// GetSSEHub 获取SSE Hub
-func (s *QRCodeLoginService) GetSSEHub() *sse.Hub {
-	return s.sseHub
+// GetWSHub 获取WS Hub
+func (s *QRCodeLoginService) GetWSHub() *ws.Hub {
+	return s.wsHub
 }
 
 // GetUserService 获取用户服务