二维码池批量上传与认证图片预览修复

- 后端新增批量创建二维码接口 POST /admin/chats/qrcodes/batch
- 前端二维码管理页支持多图拖拽批量上传
- 注册 qrcode 图片压缩场景(maxSide=2560, quality=0.95)
- 后端 normalizeScene 注册 qrcode scene
- 增强 AuthImage 组件支持 el-image 大图预览(previewSrcList)
- 修复 WithdrawalDetailDialog 提现凭证图片 401 问题
- 删除重复的 components/AuthImage.vue，统一使用共享组件
- 提交3剩余: 会话列表群类型图标、发布成功跳群、管理端路由等

backend/internal/modules/chat/handler_qrcode.go

@@ -25,6 +25,24 @@ func (h *Handler) CreateQrCodeHandler(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{"data": qrcode})
 }
 
+// BatchCreateQrCodeHandler 批量创建二维码
+func (h *Handler) BatchCreateQrCodeHandler(c *gin.Context) {
+	var req BatchCreateQrCodeRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	adminID := c.GetUint64("admin_id")
+	qrcodes, err := h.service.repo.BatchCreateQrCode(c.Request.Context(), adminID, req)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"data": qrcodes})
+}
+
 // ListQrCodesHandler 列表查询二维码
 func (h *Handler) ListQrCodesHandler(c *gin.Context) {
 	var req QrCodeListRequest

backend/internal/modules/chat/qrcode.go

@@ -29,6 +29,11 @@ type CreateQrCodeRequest struct {
 	ExpiresAt *time.Time `json:"expires_at"`
 }
 
+// BatchCreateQrCodeRequest 批量创建二维码请求
+type BatchCreateQrCodeRequest struct {
+	Items []CreateQrCodeRequest `json:"items" binding:"required,min=1,max=20"`
+}
+
 // UpdateQrCodeRequest 更新二维码请求
 type UpdateQrCodeRequest struct {
 	Note      *string    `json:"note"`
@@ -74,6 +79,32 @@ func (r *Repository) CreateQrCode(ctx context.Context, adminID uint64, req Creat
 	return &qrcode, nil
 }
 
+// BatchCreateQrCode 批量创建二维码
+func (r *Repository) BatchCreateQrCode(ctx context.Context, adminID uint64, req BatchCreateQrCodeRequest) ([]model.ChatQrCode, error) {
+	var qrcodes []model.ChatQrCode
+	defaultExpires := time.Now().Add(7 * 24 * time.Hour)
+
+	for _, item := range req.Items {
+		qr := model.ChatQrCode{
+			ImageURL:  item.ImageURL,
+			Status:    QrCodeStatusUnused,
+			CreatedBy: adminID,
+			Note:      item.Note,
+			ExpiresAt: item.ExpiresAt,
+		}
+		if qr.ExpiresAt == nil {
+			qr.ExpiresAt = &defaultExpires
+		}
+		qrcodes = append(qrcodes, qr)
+	}
+
+	if err := r.db.WithContext(ctx).Create(&qrcodes).Error; err != nil {
+		return nil, err
+	}
+
+	return qrcodes, nil
+}
+
 // ListQrCodes 列表查询二维码
 func (r *Repository) ListQrCodes(ctx context.Context, req QrCodeListRequest) ([]model.ChatQrCode, int64, error) {
 	if req.Page < 1 {

backend/internal/modules/file/service.go

@@ -115,7 +115,7 @@ func fileURLForScene(scene string, key string) string {
 func normalizeScene(scene string) string {
 	scene = strings.TrimSpace(strings.ToLower(scene))
 	switch scene {
-	case "listing", "handoff", "dispute", "realname", "avatar", "home-banner", "chat", "payment-cert", "announcement":
+	case "listing", "handoff", "dispute", "realname", "avatar", "home-banner", "chat", "payment-cert", "announcement", "qrcode":
 		return scene
 	default:
 		return "misc"