优化结构

app/system/internal/biz/errors.go

@@ -0,0 +1,13 @@
+package biz
+
+import (
+	"github.com/go-kratos/kratos/v3/errors"
+)
+
+var (
+	ErrUserNotFound = errors.NotFound("USER_NOT_FOUND", "user not found")
+	// ErrInvalidCredentials is returned for any failed login, regardless of
+	// whether the user exists, to avoid leaking which accounts are registered.
+	ErrInvalidCredentials = errors.Unauthorized("INVALID_CREDENTIALS", "invalid credentials")
+	ErrUserDisabled       = errors.Forbidden("USER_DISABLED", "user disabled")
+)