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/TerminalView.tsx

@@ -100,17 +100,16 @@ export const TerminalView: React.FC = () => {
     const hasActiveContext = currentSessionId !== null || newSessionDraft?.open === true;
 
     const effectiveDirectory = useEffectiveDirectory() ?? null;
-    const terminalStore = useTerminalStore();
-    const terminalSessions = terminalStore.sessions;
-    const terminalHydrated = terminalStore.hasHydrated;
-    const ensureDirectory = terminalStore.ensureDirectory;
-    const createTab = terminalStore.createTab;
-    const setActiveTab = terminalStore.setActiveTab;
-    const closeTab = terminalStore.closeTab;
-    const setTabSessionId = terminalStore.setTabSessionId;
-    const setTabLifecycle = terminalStore.setTabLifecycle;
-    const setConnecting = terminalStore.setConnecting;
-    const appendToBuffer = terminalStore.appendToBuffer;
+    const terminalSessions = useTerminalStore((s) => s.sessions);
+    const terminalHydrated = useTerminalStore((s) => s.hasHydrated);
+    const ensureDirectory = useTerminalStore((s) => s.ensureDirectory);
+    const createTab = useTerminalStore((s) => s.createTab);
+    const setActiveTab = useTerminalStore((s) => s.setActiveTab);
+    const closeTab = useTerminalStore((s) => s.closeTab);
+    const setTabSessionId = useTerminalStore((s) => s.setTabSessionId);
+    const setTabLifecycle = useTerminalStore((s) => s.setTabLifecycle);
+    const setConnecting = useTerminalStore((s) => s.setConnecting);
+    const appendToBuffer = useTerminalStore((s) => s.appendToBuffer);
 
     const directoryTerminalState = React.useMemo(() => {
         if (!effectiveDirectory) return undefined;