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/dto/mappers.go

@@ -59,9 +59,11 @@ func UserFromServiceAdmin(u *service.User) *AdminUser {
 		return nil
 	}
 	return &AdminUser{
-		User:       *base,
-		Notes:      u.Notes,
-		GroupRates: u.GroupRates,
+		User:                  *base,
+		Notes:                 u.Notes,
+		GroupRates:            u.GroupRates,
+		SoraStorageQuotaBytes: u.SoraStorageQuotaBytes,
+		SoraStorageUsedBytes:  u.SoraStorageUsedBytes,
 	}
 }
 

backend/internal/handler/dto/types.go

@@ -31,6 +31,10 @@ type AdminUser struct {
 	// GroupRates 用户专属分组倍率配置
 	// map[groupID]rateMultiplier
 	GroupRates map[int64]float64 `json:"group_rates,omitempty"`
+
+	// Sora 存储配额
+	SoraStorageQuotaBytes int64 `json:"sora_storage_quota_bytes"`
+	SoraStorageUsedBytes  int64 `json:"sora_storage_used_bytes"`
 }
 
 type APIKey struct {