From fdea3aa9d1f124dd3e18528c98ce9d8a7ebb9b6b Mon Sep 17 00:00:00 2001
From: hhs <386998068@qq.com>
Date: Sun, 14 Jun 2026 17:24:57 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E6=96=B0=E5=A2=9E=E8=AE=A4=E8=AF=81?=
 =?UTF-8?q?=E7=9B=B8=E5=85=B3=E9=94=99=E8=AF=AF=E7=A0=81=EF=BC=88USERNAME?=
 =?UTF-8?q?=5FTAKEN,=20INVALID=5FCREDENTIALS,=20INVALID=5FTOKEN,=20INVALID?=
 =?UTF-8?q?=5FINPUT=EF=BC=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 backend/internal/errors/codes.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/backend/internal/errors/codes.go b/backend/internal/errors/codes.go
index 739cfdb..9417209 100644
--- a/backend/internal/errors/codes.go
+++ b/backend/internal/errors/codes.go
@@ -14,6 +14,12 @@ const (
 	CodeSTTError        = "STT_ERROR"
 	CodeTTSError        = "TTS_ERROR"
 	CodeInternalError   = "INTERNAL_ERROR"
+
+	// 认证相关错误码
+	CodeUsernameTaken      = "USERNAME_TAKEN"
+	CodeInvalidCredentials = "INVALID_CREDENTIALS"
+	CodeInvalidToken       = "INVALID_TOKEN"
+	CodeInvalidInput       = "INVALID_INPUT"
 )
 
 // Sender 定义发送 WS 错误消息的接口，便于测试 mock。