chore: adapt the tasks/workflow/teams work to DSH 0.1.7-rc.1 (rebase onto v0.21.1)

Rebases the whole branch onto main's new 0.1.7-rc.1 baseline and lands the
adaptation the new host contract requires: the ui-primitives icon family rename
(Icon<Name><14|16> -> Icon<Name>Regular/Medium, with the 14px defaults pinned
back explicitly) and the StateDot redraw, the rewritten dsh-settings surface
(entry-id namespace, DSH schemastery with collected volatile returns,
configure auto:false), session format v4 (producer-owned source kind plus the
rewritten tool-result shape, parsers accepting both), the client snapshot move
to projectionsBySession.subagentCatalog with the jobs.list route behind it, the
^0.1.7-rc.1 peer floor with vendor and bare-import devDeps, the reduced chunk
set mirrored in all eight places, and the capability hand-backs (read-only
previews, terminal, browser).

Verified: typecheck and lint clean; 119 files / 1200 tests; build with no old
contract residue in the bundles; mount e2e 7/7; the tasks page still passes its
70-assertion real-browser contract.

src/client/locales.ts

@@ -344,7 +344,6 @@ export const zh = {
   codeBlockUnwrap: '取消自动换行',
   sideChatBlockWindow: '共 {total} 行 · 显示 {shown} 行',
   sideChatConnDisconnected: '连接已断开，点击立即重连',
-  sideChatConnReconnect: '重新连接',
   sideChatConnConnecting: '正在重连…',
   sideChatConnRecovered: '连接已恢复',
   sideChatConnReconnectAction: '立即重连',
@@ -815,7 +814,6 @@ export const en: Record<keyof typeof zh, string> = {
   codeBlockUnwrap: 'Do not wrap lines',
   sideChatBlockWindow: '{shown} of {total} lines',
   sideChatConnDisconnected: 'Disconnected, reconnect now',
-  sideChatConnReconnect: 'Reconnect',
   sideChatConnConnecting: 'Reconnecting…',
   sideChatConnRecovered: 'Connection restored',
   sideChatConnReconnectAction: 'Reconnect now',