feat(tasks-ui): tasks on their owner nodes, host-primitive controls, icon glyphs, draggable output

Round-two review feedback, all three points:

- TASKS ON NODES: the model maps each shared task (ownerName -> member name
  -> member session id) onto its owner's node; graph cards and tree rows
  render a fourth line (icon + subject + status + '+N'), and the node detail
  popover lists every owned task.
- TEAM BOARD: member Pills double as the owner filter; each task row is a
  status dot + subject + owner + status Tag + ONE overflow Menu (complete /
  reopen / edit / reassign submenu / delete with a two-step arm). Creating
  and editing moved into a real Modal with labeled Inputs and owner Pills —
  the narrow strip is no longer where you type.
- HOST PRIMITIVES ONLY: the board and the jobs drawer now use Menu / Modal /
  Input / Button / Pill / Tag / Switch / StateDot; no native select or input
  remains (guarded by a spec).
- ICONS, NOT HAND-DRAWN GLYPHS: every text glyph (circle/diamond/triangle/
  check/chevrons/i/house) is replaced by a host icon — agent preset, user
  (teammate), branch (workflow run), checklist (fold + tasks), tree corner,
  fullscreen (fit), ellipsis (node details), copy/stop (jobs). The live line
  now shows the tool's own icon + name + args without the drawn box.
- JOBS UX: the output popover is DRAGGABLE (offset clamped to the viewport,
  double click re-anchors, controls do not start a drag), defaults to 380px,
  and gains copy-output, a follow-latest switch, kind/status Tags and a drag
  hint; the drawer highlights the open row.
- 19 new copy keys across zh/en/ja and the 18 third-language dictionaries.

Tests: 4 new specs (task rendered on its node, no native select/input +
menu-driven board, create-through-dialog posts the CAS-free create, job
popover drag moves the card). Full suite 1404 passed / 133 files.

src/client/locales.ts

@@ -454,6 +454,15 @@ export const zh = {
   teamTaskConflict: '任务已被他人修改，已刷新',
   teamTaskError: '操作失败：{message}',
   teamTaskDeleted: '已删除',
+  teamTaskActions: '任务操作',
+  teamTaskSubjectPlaceholder: '一句话说明要做什么',
+  teamTaskDescriptionPlaceholder: '补充说明（可选）',
+  teamFilterAll: '全部',
+  tasksNodeTasks: '共享任务',
+  jobCopyOutput: '复制输出',
+  jobCopied: '已复制',
+  jobFollowTail: '跟随最新',
+  jobDragHint: '拖动浮窗',
   workflowRunning: '进行中',
   workflowCompleted: '已完成',
   workflowCancelled: '已取消',
@@ -949,6 +958,15 @@ export const en: Record<keyof typeof zh, string> = {
   teamTaskConflict: 'The task changed elsewhere; refreshed',
   teamTaskError: 'Operation failed: {message}',
   teamTaskDeleted: 'Deleted',
+  teamTaskActions: 'Task actions',
+  teamTaskSubjectPlaceholder: 'One line describing the work',
+  teamTaskDescriptionPlaceholder: 'Extra context (optional)',
+  teamFilterAll: 'All',
+  tasksNodeTasks: 'Shared tasks',
+  jobCopyOutput: 'Copy output',
+  jobCopied: 'Copied',
+  jobFollowTail: 'Follow latest',
+  jobDragHint: 'Drag to move',
   workflowRunning: 'Running',
   workflowCompleted: 'Completed',
   workflowCancelled: 'Cancelled',