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/components/views/git/AIHighlightsBox.tsx

@@ -45,7 +45,7 @@ export const AIHighlightsBox: React.FC<AIHighlightsBoxProps> = ({
       </div>
       <ul className="space-y-1">
         {highlights.map((highlight, index) => (
-          <li key={index} className="typography-meta text-foreground">
+          <li key={`${highlight}-${index}`} className="typography-meta text-foreground">
             {highlight}
           </li>
         ))}

packages/ui/src/components/views/git/ConflictDialog.tsx

@@ -204,9 +204,9 @@ export const ConflictDialog: React.FC<ConflictDialogProps> = ({
               </div>
               <div className="bg-[var(--surface-elevated)] rounded-lg p-3 max-h-40 overflow-y-auto overflow-x-hidden">
                 <ul className="space-y-1">
-                  {displayFiles.map((file, index) => (
+                  {displayFiles.map((file) => (
                     <li
-                      key={index}
+                      key={file}
                       className="typography-micro text-foreground font-mono truncate block"
                       title={file}
                     >

packages/ui/src/components/views/git/HistoryCommitRow.tsx

@@ -46,14 +46,14 @@ function getChangeTypeColor(changeType: string) {
   }
 }
 
-export const HistoryCommitRow: React.FC<HistoryCommitRowProps> = ({
+export const HistoryCommitRow = React.memo(({
   entry,
   isExpanded,
   onToggle,
   files,
   isLoadingFiles,
   onCopyHash,
-}) => {
+}: HistoryCommitRowProps) => {
   const { t } = useI18n();
   return (
     <li>
@@ -159,4 +159,4 @@ export const HistoryCommitRow: React.FC<HistoryCommitRowProps> = ({
       )}
     </li>
   );
-};
+});