refactor(*): 代码质量 - 优化前后端实现并完善协议与画布验证

backend/internal/handler/security.go

@@ -16,8 +16,8 @@ import (
 	"strings"
 	"time"
 
-	"infinite-canvas/backend/internal/model"
-	"infinite-canvas/backend/internal/service"
+	"yingce/backend/internal/model"
+	"yingce/backend/internal/service"
 
 	"github.com/gin-gonic/gin"
 )