feat: 画图台并发重构 + 品牌定制 + 用户备注 + provider/UI 多项修复

画图台(并发出图):
- 不再锁定 UI:点「生成」开独立任务,可连续多次并发
- 结果网格一行5个、最多10张,进行中/成功/失败状态回显,刷新保留进行中
- 生图张数 1/2/3/4,各自独立计费出卡
- 点图=参考图(单张替换/多张替换末位);首尾帧模型点视频=抓末帧设为首帧,否则放大
- /logs 新增 statuses=pending,success 服务端过滤(status IN 专用 SQL)

品牌定制(设置→网站):
- 自定义 Logo 图片 + 子标题(公开页头部 + 管理侧栏)
- 邮件验证码标题改用站点名:{title} 邮箱验证码

提示词复制:
- 去掉复制按钮,点提示词文字即复制(预览/后台日志/图片管理/画图记录),统一弹「指令已复制」
- 新增 utils/clipboard.js:execCommand 回退,非安全上下文(http/IP)也能复制

用户管理:列表加「备注」列,新建/编辑可填改备注(默认空)

provider 修复:
- grok 401 正确判死封号(markTokenFailure 漏了 grok 池)
- grok 视频支持 15s
- custom 上游报错去敏感(抹掉上游 URL/IP,改英文短描述)
- custom 去掉额度耗尽锁定:429/欠费当临时错误,账号保持 active

UI/其它:
- 展示位弹窗浅色主题适配(tab 选中高亮、输入框边框)— 主题变量 + 中心补丁
- 自定义模型:时长可填任意秒数 + 15s 预设
- 首页设置/卡密弹窗去固定高度与滚动条
- 顶部菜单「记录」→「图片」
- 下线 Flow provider(代码移除)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

backend/internal/service/admin_read.go

@@ -41,19 +41,12 @@ func (s *AdminReadService) Users(ctx context.Context) ([]model.User, map[string]
 	if err != nil {
 		return nil, nil, err
 	}
-	counts, err := s.events.UserSuccessCounts(ctx)
-	if err != nil {
-		return nil, nil, err
-	}
-	for i := range users {
-		meta := users[i].Notes
-		_ = meta
-	}
 	stats, err := s.users.Stats(ctx)
 	if err != nil {
 		return nil, nil, err
 	}
-	stats["generation_counts"] = counts
+	// Per-user generation count now comes from the persistent users.generation_count
+	// column (set in the handler from each user object), not a log COUNT.
 	return users, stats, nil
 }
 
@@ -66,10 +59,6 @@ func (s *AdminReadService) ModelsView(ctx context.Context) ([]map[string]any, er
 	if err != nil {
 		return nil, err
 	}
-	counts, err := s.events.ModelSuccessCounts(ctx)
-	if err != nil {
-		return nil, err
-	}
 	out := make([]map[string]any, 0, len(items))
 	for _, item := range items {
 		out = append(out, map[string]any{
@@ -89,7 +78,7 @@ func (s *AdminReadService) ModelsView(ctx context.Context) ([]map[string]any, er
 			"max_reference_images": item.MaxReferenceImages,
 			"reference_mode":       item.ReferenceMode,
 			"weight":               item.Weight,
-			"generation_count":     counts[item.ID],
+			"generation_count":     item.GenerationCount,
 			"created_at":           item.CreatedAt,
 			"updated_at":           item.UpdatedAt,
 		})
@@ -97,12 +86,13 @@ func (s *AdminReadService) ModelsView(ctx context.Context) ([]map[string]any, er
 	return out, nil
 }
 
-func (s *AdminReadService) Logs(ctx context.Context, limit, offset int, kind, status string, since *time.Time, userID, excludeSource, source string, hasFile bool) ([]model.EventLog, int64, *repo.EventStats, error) {
+func (s *AdminReadService) Logs(ctx context.Context, limit, offset int, kind, status string, statuses []string, since *time.Time, userID, excludeSource, source string, hasFile bool) ([]model.EventLog, int64, *repo.EventStats, error) {
 	items, total, err := s.events.List(ctx, repo.EventListFilter{
 		Limit:         limit,
 		Offset:        offset,
 		Kind:          kind,
 		Status:        status,
+		Statuses:      statuses,
 		Since:         since,
 		UserID:        userID,
 		ExcludeSource: excludeSource,
@@ -173,7 +163,7 @@ func (s *AdminReadService) Stats(ctx context.Context) (map[string]any, error) {
 func (s *AdminReadService) Dashboard(ctx context.Context) (map[string]any, error) {
 	now := time.Now()
 	dayCut := now.Add(-24 * time.Hour)
-	weekCut := now.Add(-7 * 24 * time.Hour)
+	weekCut := now.Add(-3 * 24 * time.Hour) // "week" key = last 3 days (per admin request)
 
 	day, err := s.events.WindowStats(ctx, dayCut)
 	if err != nil {
@@ -199,6 +189,12 @@ func (s *AdminReadService) Dashboard(ctx context.Context) (map[string]any, error
 	if err != nil {
 		return nil, err
 	}
+	// All-time persistent counters (total/success/failed/image/video/api) — these
+	// survive log retention/clearing, unlike the windowed day/week stats.
+	lifetime, err := s.events.Counters(ctx)
+	if err != nil {
+		return nil, err
+	}
 
 	// Per-window top-N analytics so the frontend can toggle 24h / 7d without a
 	// re-fetch (the lists are small — top 6 / top 5).
@@ -263,6 +259,7 @@ func (s *AdminReadService) Dashboard(ctx context.Context) (map[string]any, error
 		"dau":            dau,
 		"wau":            wau,
 		"hourly":         hourly,
+		"lifetime":       lifetime,
 		"analytics": map[string]any{
 			"day":  dayAnalytics,
 			"week": weekAnalytics,