chore: stabilize lint and verify builds

backend/app/errorx/app_error.go

@@ -31,6 +31,7 @@ func (e *AppError) Unwrap() error { return e.originalErr }
 // copy 返回 AppError 的副本，用于链式调用时的并发安全
 func (e *AppError) copy() *AppError {
 	newErr := *e
+
 	return &newErr
 }
 
@@ -43,6 +44,7 @@ func (e *AppError) WithCause(err error) *AppError {
 	if _, file, line, ok := runtime.Caller(1); ok {
 		newErr.file = fmt.Sprintf("%s:%d", file, line)
 	}
+
 	return newErr
 }
 
@@ -50,6 +52,7 @@ func (e *AppError) WithCause(err error) *AppError {
 func (e *AppError) WithData(data any) *AppError {
 	newErr := e.copy()
 	newErr.Data = data
+
 	return newErr
 }
 
@@ -57,12 +60,14 @@ func (e *AppError) WithData(data any) *AppError {
 func (e *AppError) WithMsg(msg string) *AppError {
 	newErr := e.copy()
 	newErr.Message = msg
+
 	return newErr
 }
 
 func (e *AppError) WithMsgf(format string, args ...any) *AppError {
 	newErr := e.copy()
 	newErr.Message = fmt.Sprintf(format, args...)
+
 	return newErr
 }
 
@@ -70,6 +75,7 @@ func (e *AppError) WithMsgf(format string, args ...any) *AppError {
 func (e *AppError) WithSQL(sql string) *AppError {
 	newErr := e.copy()
 	newErr.sql = sql
+
 	return newErr
 }
 
@@ -80,6 +86,7 @@ func (e *AppError) WithParams(params ...any) *AppError {
 	if _, file, line, ok := runtime.Caller(1); ok {
 		newErr.file = fmt.Sprintf("%s:%d", file, line)
 	}
+
 	return newErr
 }