feat(terminal): refactor runtime and add mobile workspace (#2280)

Replace the legacy terminal flow with a shared authenticated WebSocket
runtime used across web, desktop, relay, and mobile surfaces.

- introduce the v3 terminal protocol with scoped attachments, snapshots,
  ordered output, bounded replay history, reconnects, and explicit lifecycle
- harden PTY creation, restart, resize, close, force-kill, idle cleanup,
  shell selection, login mode, environment sanitization, and appearance sync
- add runtime-aware terminal APIs with relay authentication and Electron parity
- add a fullscreen mobile terminal workspace with touch scrolling,
  long-press selection, safe-area controls, quick keys, and Ctrl/Alt input
- add terminal selection attachments, preview detection, project actions,
  shell settings, and localized UI
- harden Ghostty rendering, resize recovery, Unicode handling, block
  characters, line height, and stale-row behavior
- remove the obsolete terminal SSE path and update reverse-proxy guidance
- expand terminal runtime, transport, input, selection, and store coverage
- avoid duplicate web builds when preparing mobile assets in root CI builds

packages/ui/src/lib/i18n/messages/uk.settings.ts

@@ -1728,6 +1728,11 @@ export const settingsDict = {
   "settings.openchamber.visual.field.fontSizePercentageAria": "Розмір шрифту у відсотках",
   "settings.openchamber.visual.actions.resetFontSizeAria": "Скинути розмір шрифту",
   "settings.openchamber.visual.field.terminalFontSize": "Розмір шрифту терміналу",
+  "settings.openchamber.visual.field.terminalShell": "Оболонка терміналу",
+  "settings.openchamber.visual.field.terminalShellAria": "Вибрати оболонку терміналу",
+  "settings.openchamber.visual.field.terminalShellHint": "Перезапустіть термінал, щоб застосувати цю зміну до поточної сесії.",
+  "settings.openchamber.visual.field.terminalLoginShell": "Запускати як оболонку входу",
+  "settings.openchamber.visual.option.terminalShell.auto": "Автоматично",
   "settings.openchamber.visual.field.editorFontSize": "Розмір шрифту редактора",
   "settings.openchamber.visual.field.codeFont": "Шрифт коду",
   "settings.openchamber.visual.field.selectCodeFontAria": "Вибрати шрифт коду",