refactor(*): 代码质量 - 优化前后端实现并完善协议与画布验证

backend/internal/payment/rpc.go

@@ -28,7 +28,7 @@ import (
 	"syscall"
 	"time"
 
-	"infinite-canvas/backend/internal/protocol"
+	"yingce/backend/internal/protocol"
 )
 
 const (

backend/internal/payment/types.go

@@ -1,8 +1,8 @@
 package payment
 
 import (
-	"infinite-canvas/backend/internal/protocol"
-	paymentsdk "infinite-canvas/backend/payment-sdk"
+	"yingce/backend/internal/protocol"
+	paymentsdk "yingce/backend/payment-sdk"
 )
 
 type Config = paymentsdk.Config