feat(client): workflow-graph Tasks page with teams board and jobs drawer

The Subagent page becomes the Tasks page per the approved Variant-D design:

- tasks-model.ts feeds BOTH modes from one pre-order node list: graph
  canvas (TasksGraph: layered nodes over bezier edges, drag-pan,
  wheel-zoom-to-cursor, phase frames, bottom-right control cluster) and
  the classic tree (TasksTree: keyboard navigable) — the view toggle and
  fold toggle stay reachable in both modes.
- Workflow runs (workflows.list) hang under their origin agent; member
  agents re-parent under the run node, missing ones synthesize from run
  data; completed leaf agents fold into per-parent aggregate nodes
  (click or cluster toggle to expand/re-collapse).
- Agent Teams (experimental): roster enriches nodes; a header chip opens
  the shared task board popover with basic CAS operations (complete /
  reopen / delete / reassign / create / edit); no experimental layer →
  the whole block hides (structural degradation).
- Background jobs move into a bottom drawer that auto-collapses at 8+
  agents (manual toggle wins); job output opens as an anchored popover
  (event replay, never the model's cursor); two-click kill preserved.
- Live activity lines render as glyph + tool + args (tool-icons map onto
  host primitive icons).
- Node click jumps to the transcript; ⓘ opens the detail popover;
  popovers follow the selection-popup dismissal contract (Escape /
  outside click / anchor off-screen via IntersectionObserver).
- tasksViewMode pref (graph default) with a select row in settings;
  58 new copy keys across zh/en/ja + 18 third-language dictionaries;
  dead CSS from the old tree/dock pruned.
- Tests: 6 new page-interaction specs (auto-collapse, both-mode toggle,
  jump, fold, popover); jobs-view suite re-pointed at the popover;
  prefs/builtins/smoke lock tests updated for the new pref.

src/client/locales-ko.ts

@@ -382,6 +382,64 @@ export const ko: Record<string, string> = {
   jobKill: '종료',
   jobKillConfirm: '다시 클릭하여 종료 확인',
   jobKillError: '종료 실패',
+  tasksViewGraph: '워크플로 그래프',
+  tasksViewTree: '트리',
+  tasksViewSwitchToGraph: '워크플로 그래프로 전환',
+  tasksViewSwitchToTree: '트리로 전환',
+  settingsViewModeTitle: '작업 관리 기본 보기',
+  settingsViewModeDesc: '작업 관리 페이지를 열 때의 기본 표시 방식(페이지 안에서 언제든 임시 전환 가능)',
+  settingsViewModeGraph: '워크플로 그래프',
+  settingsViewModeGraphDesc: '계층형 노드 그래프, 확대/이동 가능',
+  settingsViewModeTree: '트리',
+  settingsViewModeTreeDesc: '클래식 들여쓰기 트리, 키보드 탐색 지원',
+  tasksWorkflowMember: '워크플로 멤버',
+  tasksFoldCompleted: '✓ {count} 완료됨',
+  tasksFoldExpand: '완료된 노드 펼치기',
+  tasksFoldCollapse: '완료된 노드 접기',
+  tasksZoomIn: '확대',
+  tasksZoomOut: '축소',
+  tasksZoomFit: '캔버스에 맞추기',
+  tasksNodeJump: '대화 기록 보기',
+  tasksNodeState: '상태',
+  tasksNodeMode: '모드',
+  tasksNodeModel: '모델',
+  tasksNodeTeamRole: '팀 역할',
+  tasksNodeActivity: '최근 활동',
+  tasksStateRunning: '실행 중',
+  tasksStateIdle: '대기 중',
+  tasksStateDone: '완료됨',
+  tasksStateError: '오류',
+  teamBoard: '팀 작업 보드',
+  teamChip: '팀 멤버 {members}명 · 작업 {tasks}개',
+  teamMembers: '멤버',
+  teamTasksEmpty: '공유 작업이 없습니다',
+  teamTaskCreate: '새 작업',
+  teamTaskSubject: '제목',
+  teamTaskDescription: '설명',
+  teamTaskOwner: '담당자',
+  teamTaskUnowned: '미배정',
+  teamTaskPending: '할 일',
+  teamTaskInProgress: '진행 중',
+  teamTaskCompleted: '완료됨',
+  teamTaskBlocked: '차단됨',
+  teamTaskComplete: '완료',
+  teamTaskReopen: '다시 열기',
+  teamTaskDelete: '삭제',
+  teamTaskDeleteConfirm: '삭제 확인',
+  teamTaskEdit: '편집',
+  teamTaskSave: '저장',
+  teamTaskCancel: '취소',
+  teamTaskConflict: '다른 사람이 작업을 수정해 새로고침했습니다',
+  teamTaskError: '작업 실패: {message}',
+  teamTaskDeleted: '삭제됨',
+  workflowRunning: '진행 중',
+  workflowCompleted: '완료됨',
+  workflowCancelled: '취소됨',
+  workflowFailed: '실패',
+  workflowPhaseUnnamed: '이름 없는 단계',
+  workflowMembers: '{done}/{total} 멤버',
+  jobsAutoCollapsed: '에이전트가 많아 자동으로 접었습니다',
+  catalogLoadFailed: '{count}개 브랜치 로드 실패',
   addPluginsTabCard: 'Tab 플러그인 추가',
   addPluginsTabCardDesc: '새 사이드바 페이지 등록',
   addPluginsViewerCard: '미리보기 플러그인 추가',