refactor(views): transcript toolbar uses the shared Button component + labels fix

Toolbar controls were hand-rolled <button>s, so they never got the
project's built-in aria-expanded active state — opening a menu left the
trigger looking idle. Route every control through the shared Button:

- Density / filter / ⓘ / close → Button variant="ghost" via the trigger
  render prop, so an open menu shows the muted active background for free.
- Active filter → Button variant="brand" (the design-system ON state),
  replacing the ad-hoc blue classes.
- Sort → ghost Button on the same chassis (was a segmented tab strip).
- Copy → ghost Button.

Wording:
- Sort reads "Oldest first" / "Newest first" (was the ambiguous
  "chronological / time order").
- Expand-mode "Smart" → "Focus" — names the result, not a hollow adjective.

Start/created/completed timestamps remain in the ⓘ Run-details popover.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

packages/views/common/task-transcript/agent-transcript-dialog.tsx

@@ -22,6 +22,7 @@ import {
 } from "lucide-react";
 import { cn } from "@multica/ui/lib/utils";
 import { copyText } from "@multica/ui/lib/clipboard";
+import { Button } from "@multica/ui/components/ui/button";
 import { Dialog, DialogContent, DialogTitle } from "@multica/ui/components/ui/dialog";
 import { Popover, PopoverContent, PopoverTrigger } from "@multica/ui/components/ui/popover";
 import { Collapsible, CollapsibleContent, CollapsibleTrigger } from "@multica/ui/components/ui/collapsible";
@@ -572,9 +573,15 @@ export function AgentTranscriptDialog({
               {hasRunDetails && (
                 <Popover>
                   <PopoverTrigger
-                    aria-label={t(($) => $.transcript.run_info)}
-                    title={t(($) => $.transcript.run_info)}
-                    className="flex h-7 w-7 items-center justify-center rounded text-muted-foreground transition-colors hover:bg-accent hover:text-foreground"
+                    render={
+                      <Button
+                        variant="ghost"
+                        size="icon-sm"
+                        aria-label={t(($) => $.transcript.run_info)}
+                        title={t(($) => $.transcript.run_info)}
+                        className="text-muted-foreground"
+                      />
+                    }
                   >
                     <Info className="h-3.5 w-3.5" />
                   </PopoverTrigger>
@@ -623,13 +630,15 @@ export function AgentTranscriptDialog({
                   </PopoverContent>
                 </Popover>
               )}
-              <button
-                type="button"
+              <Button
+                variant="ghost"
+                size="icon-sm"
                 onClick={() => onOpenChange(false)}
-                className="flex h-7 w-7 items-center justify-center rounded text-muted-foreground hover:text-foreground hover:bg-accent transition-colors"
+                aria-label={t(($) => $.transcript.close)}
+                className="text-muted-foreground"
               >
                 <X className="h-4 w-4" />
-              </button>
+              </Button>
             </div>
           </div>
         </div>
@@ -656,8 +665,14 @@ export function AgentTranscriptDialog({
             {items.length > 0 && (
               <DropdownMenu>
                 <DropdownMenuTrigger
-                  aria-label={t(($) => $.transcript.density_label)}
-                  className="flex shrink-0 items-center gap-1 rounded px-2 py-1 text-xs text-muted-foreground transition-colors hover:bg-accent hover:text-foreground"
+                  render={
+                    <Button
+                      variant="ghost"
+                      size="sm"
+                      aria-label={t(($) => $.transcript.density_label)}
+                      className="text-muted-foreground"
+                    />
+                  }
                 >
                   <ListCollapse className="h-3 w-3" />
                   <span className="hidden sm:inline">
@@ -707,18 +722,19 @@ export function AgentTranscriptDialog({
             {filterOptions.length > 0 && (
               <DropdownMenu>
                 <DropdownMenuTrigger
-                  aria-label={t(($) => $.transcript.filter)}
-                  className={cn(
-                    "flex shrink-0 items-center gap-1 rounded px-2 py-1 text-xs transition-colors",
-                    activeFilterKeys.length > 0
-                      ? "text-blue-600 dark:text-blue-400 bg-blue-500/10 hover:bg-blue-500/20"
-                      : "text-muted-foreground hover:text-foreground hover:bg-accent",
-                  )}
+                  render={
+                    <Button
+                      variant={activeFilterKeys.length > 0 ? "brand" : "ghost"}
+                      size="sm"
+                      aria-label={t(($) => $.transcript.filter)}
+                      className={activeFilterKeys.length > 0 ? undefined : "text-muted-foreground"}
+                    />
+                  }
                 >
                   <Filter className="h-3 w-3" />
                   <span className="hidden sm:inline">{t(($) => $.transcript.filter)}</span>
                   {activeFilterKeys.length > 0 && (
-                    <span className="ml-0.5 rounded-full bg-blue-500/20 px-1.5 py-0 text-[10px] font-medium">
+                    <span className="ml-0.5 rounded-full bg-brand-foreground/20 px-1.5 py-0 text-[10px] font-medium tabular-nums">
                       {activeFilterKeys.length}
                     </span>
                   )}
@@ -751,15 +767,16 @@ export function AgentTranscriptDialog({
                 </DropdownMenuContent>
               </DropdownMenu>
             )}
-            <button
-              type="button"
+            <Button
+              variant="ghost"
+              size="sm"
               onClick={handleCopyAll}
               aria-label={copyTranscriptLabel}
-              className="flex shrink-0 items-center gap-1 rounded px-2 py-1 text-xs text-muted-foreground hover:text-foreground hover:bg-accent transition-colors"
+              className="text-muted-foreground"
             >
               {copied ? <Check className="h-3 w-3" /> : <Copy className="h-3 w-3" />}
               <span className="hidden sm:inline">{copyTranscriptLabel}</span>
-            </button>
+            </Button>
           </div>
         </div>
 
@@ -843,12 +860,13 @@ interface SortDirectionToggleProps {
 function SortDirectionToggle({ value, onChange, labels }: SortDirectionToggleProps) {
   const isChronological = value === "chronological";
   return (
-    <button
-      type="button"
+    <Button
+      variant="ghost"
+      size="sm"
       onClick={() => onChange(isChronological ? "newest_first" : "chronological")}
       aria-label={labels.ariaLabel}
-      title={isChronological ? labels.chronological : labels.newestFirst}
-      className="flex shrink-0 items-center gap-1 rounded px-2 py-1 text-xs text-muted-foreground transition-colors hover:bg-accent hover:text-foreground"
+      title={labels.ariaLabel}
+      className="text-muted-foreground"
     >
       {isChronological ? (
         <ArrowDownNarrowWide className="h-3 w-3" />
@@ -858,7 +876,7 @@ function SortDirectionToggle({ value, onChange, labels }: SortDirectionTogglePro
       <span className="hidden sm:inline">
         {isChronological ? labels.chronological : labels.newestFirst}
       </span>
-    </button>
+    </Button>
   );
 }
 

packages/views/locales/en/agents.json

@@ -781,8 +781,8 @@
     "sort_newest_first": "Newest first",
     "preserve_filters": "Preserve filters",
     "density_label": "Expand mode",
-    "density_smart": "Smart",
-    "density_smart_desc": "Replies and errors read in place; thinking and tool steps stay folded",
+    "density_smart": "Focus",
+    "density_smart_desc": "Replies and errors open; thinking and tool steps stay folded",
     "density_expanded": "Expand all",
     "density_expanded_desc": "Every row's full params and output, for step-by-step review",
     "density_collapsed": "Collapse all",
@@ -809,7 +809,8 @@
     "details_started": "Started",
     "details_completed": "Completed",
     "copy_workdir": "Copy working directory",
-    "details_triggered_by": "Triggered by"
+    "details_triggered_by": "Triggered by",
+    "close": "Close"
   },
   "task_failure": {
     "agent_error": "Agent execution error",

packages/views/locales/ja/agents.json

@@ -661,8 +661,8 @@
     "sort_newest_first": "新しい順",
     "preserve_filters": "フィルターを保持",
     "density_label": "展開モード",
-    "density_smart": "スマート",
-    "density_smart_desc": "回答とエラーはそのまま読め、思考とツールの過程は折りたたまれます",
+    "density_smart": "重点展開",
+    "density_smart_desc": "回答とエラーは展開、思考とツールの過程は折りたたみ",
     "density_expanded": "すべて展開",
     "density_expanded_desc": "各行のパラメータと出力を完全に展開し、逐次レビューに",
     "density_collapsed": "すべて折りたたむ",
@@ -689,7 +689,8 @@
     "details_started": "開始",
     "details_completed": "完了",
     "copy_workdir": "作業ディレクトリをコピー",
-    "details_triggered_by": "トリガー"
+    "details_triggered_by": "トリガー",
+    "close": "閉じる"
   },
   "task_failure": {
     "agent_error": "エージェント実行エラー",

packages/views/locales/ko/agents.json

@@ -669,8 +669,8 @@
     "sort_newest_first": "최신 순",
     "preserve_filters": "필터 유지",
     "density_label": "펼치기 방식",
-    "density_smart": "스마트",
-    "density_smart_desc": "응답과 오류는 바로 읽을 수 있고, 사고와 도구 과정은 접힌 상태로 유지됩니다",
+    "density_smart": "핵심 펼치기",
+    "density_smart_desc": "응답과 오류는 펼치고, 사고와 도구 과정은 접힌 상태 유지",
     "density_expanded": "모두 펼치기",
     "density_expanded_desc": "각 행의 전체 매개변수와 출력을 펼쳐 단계별 검토에 사용",
     "density_collapsed": "모두 접기",
@@ -697,7 +697,8 @@
     "details_started": "시작",
     "details_completed": "완료",
     "copy_workdir": "작업 디렉터리 복사",
-    "details_triggered_by": "트리거한 사람"
+    "details_triggered_by": "트리거한 사람",
+    "close": "닫기"
   },
   "task_failure": {
     "agent_error": "에이전트 실행 오류",

packages/views/locales/zh-Hans/agents.json

@@ -761,12 +761,12 @@
     "antigravity_live_unavailable": "Antigravity 暂不提供实时执行事件。task 完成后即可查看执行记录。",
     "no_data": "未记录执行数据。",
     "sort_label": "排序",
-    "sort_chronological": "时间顺序",
+    "sort_chronological": "最早在前",
     "sort_newest_first": "最新在前",
     "preserve_filters": "保留筛选",
     "density_label": "展开方式",
-    "density_smart": "智能",
-    "density_smart_desc": "汇报与错误直接可读，思考和工具过程保持折叠",
+    "density_smart": "重点展开",
+    "density_smart_desc": "汇报与错误展开，思考和工具过程保持折叠",
     "density_expanded": "全部展开",
     "density_expanded_desc": "展开每一行的完整参数与输出，逐条审阅用",
     "density_collapsed": "全部收起",
@@ -793,7 +793,8 @@
     "details_started": "开始",
     "details_completed": "完成",
     "copy_workdir": "复制工作目录",
-    "details_triggered_by": "触发人"
+    "details_triggered_by": "触发人",
+    "close": "关闭"
   },
   "task_failure": {
     "agent_error": "智能体执行出错",