feat: add Sora admin backend and fix type inconsistencies

Backend changes:
- Add SoraHandler for admin Sora management APIs
  - GET /api/v1/admin/sora/stats - system statistics
  - GET /api/v1/admin/sora/users - user storage stats
  - GET /api/v1/admin/sora/generations - generation records
  - DELETE /api/v1/admin/sora/users/:id/storage - clear user storage
- Add sora_storage_quota_bytes to AdminUser DTO
- Add SoraStorageQuotaBytes to UpdateUserInput for admin user updates
- Add comprehensive tests for SoraHandler

Frontend changes:
- Add soraAdminAPI for Sora management
- Add sora_storage_quota_bytes and sora_storage_used_bytes to AdminUser type
- Add Sora storage quota field to UserEditModal (GB unit)
- Fix UsageLog type: add media_type, fix duration_ms to optional
- Fix AdminUsageLog type: add channel_id, billing_tier

Test fixes:
- Add window.matchMedia mock to AccountUsageCell.spec.ts
- Add tlsFingerprintProfileAPI mock to EditAccountModal.spec.ts
- Fix loadTLSProfiles function order in EditAccountModal.vue
- Fix translation key references in AccountStatusIndicator.spec.ts

backend/internal/handler/admin/user_handler.go

@@ -57,6 +57,8 @@ type UpdateUserRequest struct {
 	// GroupRates 用户专属分组倍率配置
 	// map[groupID]*rate，nil 表示删除该分组的专属倍率
 	GroupRates map[int64]*float64 `json:"group_rates"`
+	// Sora 存储配额（单位：字节，0 表示使用分组或系统默认配额）
+	SoraStorageQuotaBytes *int64 `json:"sora_storage_quota_bytes"`
 }
 
 // UpdateBalanceRequest represents balance update request
@@ -215,15 +217,16 @@ func (h *UserHandler) Update(c *gin.Context) {
 
 	// 使用指针类型直接传递，nil 表示未提供该字段
 	user, err := h.adminService.UpdateUser(c.Request.Context(), userID, &service.UpdateUserInput{
-		Email:         req.Email,
-		Password:      req.Password,
-		Username:      req.Username,
-		Notes:         req.Notes,
-		Balance:       req.Balance,
-		Concurrency:   req.Concurrency,
-		Status:        req.Status,
-		AllowedGroups: req.AllowedGroups,
-		GroupRates:    req.GroupRates,
+		Email:                 req.Email,
+		Password:              req.Password,
+		Username:              req.Username,
+		Notes:                 req.Notes,
+		Balance:               req.Balance,
+		Concurrency:           req.Concurrency,
+		Status:                req.Status,
+		AllowedGroups:         req.AllowedGroups,
+		GroupRates:            req.GroupRates,
+		SoraStorageQuotaBytes: req.SoraStorageQuotaBytes,
 	})
 	if err != nil {
 		response.ErrorFrom(c, err)