perf: reduce re-renders, fix mobile keyboard handling, add chunk load recovery, and improve PATH management (#1028)

* fix: exclude file content from reverted prompt text

Revert and fork now restore only the user's original prompt, not server-injected file content
Uses existing isSyntheticPart helper for type-safe filtering

* fix: keep scrollbar visible when hovering over thumb

* fix: prevent ESC abort from triggering when terminal is focused

* fix: pass directory to permission/question reply calls so approvals actually resolve

* fix: default model selection not responding after Base UI migration

* fix: prevent modal content from shifting and clipping footer buttons

* fix: improve session switching performance and add sub-agent export with prompt collapse

Defer viewport anchor saving to eliminate ~800ms UI freeze when switching sessions
Add export dialog to include sub-agent tasks recursively in markdown export
Add collapse chevron button for expanded user prompts in sticky header

* fix: resolve sidebar scroll and TDZ crash in session sidebar

* perf: reduce CPU overhead and re-renders across chat, layout, and settings

* fix: position collapse button at top of message and prevent ESC abort in terminal

* fix: position collapse button at top and add padding only when expanded

* refactor: extract shared PATH utilities and mobile keyboard hook

* refactor: import shared path-utils in electron, use module-level style constants

- Electron now imports pathLooksUserConfigured/mergePathValues from
  shared path-utils.js instead of inline duplication
- ToolPart collapsedCustomStyle moved from useMemo([]) to module const

* fix: resolve remaining merge conflicts and type errors

- Remove duplicate variable declarations in SessionNodeItem
- Remove orphaned export callback body from conflict resolution
- Fix HelpDialog description -> descriptionKey (i18n rename)

* fix: resolve type-check and lint errors in session-actions.test.ts

- Added missing bun:test type declarations (beforeEach, mock, mock.module)
- Removed unused State import
- Replaced 'as any' casts with proper OpencodeClient and ChildStoreManager types
- Added eslint-disable for unused _ parameter in mock function

* fix PR 1028 export and PATH edge cases

* fix startup retry exhaustion state

* remove opencode package lock change

* fix sub-session rename cancellation

---------

Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>

packages/ui/src/lib/i18n/messages/es.ts

@@ -237,6 +237,14 @@ export const dict: Record<I18nKey, string> = {
   "sessions.sidebar.session.export.nothingToExport": "No hay nada para exportar",
   "sessions.sidebar.session.export.success": "Sesión exportada",
   "sessions.sidebar.session.export.failedRevealPath": "No se pudo mostrar la ruta",
+  "sessions.sidebar.session.export.untitledSubagent": "Subagente sin título",
+  "sessions.sidebar.session.export.skippedSubtaskSingle": "La sesión se exportó, pero se omitió {count} tarea de subagente que no se pudo cargar.",
+  "sessions.sidebar.session.export.skippedSubtaskMany": "La sesión se exportó, pero se omitieron {count} tareas de subagente que no se pudieron cargar.",
+  "sessions.sidebar.session.export.dialog.title": "Exportar Markdown",
+  "sessions.sidebar.session.export.dialog.descriptionSingle": "Esta sesión tiene {count} tarea de subagente. ¿Incluirla en la exportación?",
+  "sessions.sidebar.session.export.dialog.descriptionMany": "Esta sesión tiene {count} tareas de subagente. ¿Incluirlas en la exportación?",
+  "sessions.sidebar.session.export.dialog.includeSubtasks": "Incluir tareas de subagente",
+  "sessions.sidebar.session.export.dialog.confirm": "Exportar",
   "sessions.sidebar.session.status.active": "Sesión activa",
   "sessions.sidebar.session.status.unread": "Actualizaciones no leídas",
   "sessions.sidebar.session.status.pinned": "Sesión anclada",
@@ -1959,6 +1967,10 @@ export const dict: Record<I18nKey, string> = {
   "onboarding.desktopRecovery.common.useRemote": "Usar remoto",
   "onboarding.desktopRecovery.actions.retrying": "Reintentando…",
   "onboarding.desktopRecovery.actions.retryConnection": "Reintentar conexión",
+  "startup.initRecovery.title": "Error al iniciar",
+  "startup.initRecovery.description": "OpenChamber no pudo completar la inicialización. Comprueba que el servidor esté en ejecución y vuelve a intentarlo.",
+  "startup.initRecovery.retry": "Reintentar",
+  "startup.initRecovery.retrying": "Reintentando…",
   "onboarding.desktopRecovery.placeholders.remoteServer": "el servidor remoto",
   "onboarding.desktopRecovery.placeholders.unknownServer": "desconocido",
   "vscodeLayout.title.chat": "Chat",