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-pt.ts

@@ -373,6 +373,64 @@ export const pt: Record<string, string> = {
   jobKill: 'Encerrar',
   jobKillConfirm: 'Clique novamente para confirmar o encerramento',
   jobKillError: 'Falha ao encerrar',
+  tasksViewGraph: 'Grafo do workflow',
+  tasksViewTree: 'Árvore',
+  tasksViewSwitchToGraph: 'Mudar para o grafo do workflow',
+  tasksViewSwitchToTree: 'Mudar para a árvore',
+  settingsViewModeTitle: 'Visualização padrão da página de tarefas',
+  settingsViewModeDesc: 'Como a página de tarefas é exibida ao abrir (o seletor na própria página ainda permite alternar pontualmente)',
+  settingsViewModeGraph: 'Grafo do workflow',
+  settingsViewModeGraphDesc: 'Grafo de nós em camadas, com zoom e deslocamento',
+  settingsViewModeTree: 'Árvore',
+  settingsViewModeTreeDesc: 'Árvore com indentação clássica, navegável pelo teclado',
+  tasksWorkflowMember: 'Membro do workflow',
+  tasksFoldCompleted: '✓ {count} concluídos',
+  tasksFoldExpand: 'Expandir os nós concluídos',
+  tasksFoldCollapse: 'Recolher os nós concluídos',
+  tasksZoomIn: 'Aproximar',
+  tasksZoomOut: 'Afastar',
+  tasksZoomFit: 'Ajustar à tela',
+  tasksNodeJump: 'Abrir transcrição',
+  tasksNodeState: 'Estado',
+  tasksNodeMode: 'Modo',
+  tasksNodeModel: 'Modelo',
+  tasksNodeTeamRole: 'Função na equipe',
+  tasksNodeActivity: 'Atividade recente',
+  tasksStateRunning: 'Em execução',
+  tasksStateIdle: 'Em espera',
+  tasksStateDone: 'Concluído',
+  tasksStateError: 'Erro',
+  teamBoard: 'Quadro de tarefas da equipe',
+  teamChip: 'Equipe {members} membros · {tasks} tarefas',
+  teamMembers: 'Membros',
+  teamTasksEmpty: 'Ainda não há tarefas compartilhadas',
+  teamTaskCreate: 'Nova tarefa',
+  teamTaskSubject: 'Assunto',
+  teamTaskDescription: 'Descrição',
+  teamTaskOwner: 'Responsável',
+  teamTaskUnowned: 'Não reivindicada',
+  teamTaskPending: 'Pendente',
+  teamTaskInProgress: 'Em andamento',
+  teamTaskCompleted: 'Concluída',
+  teamTaskBlocked: 'Bloqueada',
+  teamTaskComplete: 'Concluir',
+  teamTaskReopen: 'Reabrir',
+  teamTaskDelete: 'Excluir',
+  teamTaskDeleteConfirm: 'Confirmar exclusão',
+  teamTaskEdit: 'Editar',
+  teamTaskSave: 'Salvar',
+  teamTaskCancel: 'Cancelar',
+  teamTaskConflict: 'A tarefa foi alterada por outra pessoa; atualizada',
+  teamTaskError: 'Operação falhou: {message}',
+  teamTaskDeleted: 'Excluída',
+  workflowRunning: 'Em execução',
+  workflowCompleted: 'Concluído',
+  workflowCancelled: 'Cancelado',
+  workflowFailed: 'Falhou',
+  workflowPhaseUnnamed: 'Fase sem nome',
+  workflowMembers: '{done}/{total} membros',
+  jobsAutoCollapsed: 'Recolhido automaticamente (muitos agentes)',
+  catalogLoadFailed: 'Falha ao carregar {count} branches',
   addPluginsTabCard: 'Adicionar plugins de aba',
   addPluginsTabCardDesc: 'Registrar uma nova página da barra lateral',
   addPluginsViewerCard: 'Adicionar plugins de pré-visualização',