feat: enhance terminal functionality and settings

- Added new endpoints for terminal settings: GET and PUT /settings to retrieve and update terminal configurations.
- Implemented session limit checks during session creation, returning a 429 status when the limit is reached.
- Introduced a new TerminalSection in settings view for customizing terminal appearance and behavior, including font family, default font size, line height, and screen reader mode.
- Added support for new terminal features such as search functionality and improved error handling with a TerminalErrorBoundary component.
- Updated terminal layout persistence to include session IDs for reconnection and enhanced terminal state management.
- Introduced new keyboard shortcuts for terminal actions, including creating new terminal tabs.
- Enhanced UI with scrollbar theming for terminal components.

apps/ui/src/components/views/settings-view/config/navigation.ts

@@ -2,6 +2,7 @@ import type { LucideIcon } from "lucide-react";
 import {
   Key,
   Terminal,
+  SquareTerminal,
   Palette,
   Settings2,
   Volume2,
@@ -23,6 +24,7 @@ export const NAV_ITEMS: NavigationItem[] = [
   { id: "claude", label: "Claude", icon: Terminal },
   { id: "ai-enhancement", label: "AI Enhancement", icon: Sparkles },
   { id: "appearance", label: "Appearance", icon: Palette },
+  { id: "terminal", label: "Terminal", icon: SquareTerminal },
   { id: "keyboard", label: "Keyboard Shortcuts", icon: Settings2 },
   { id: "audio", label: "Audio", icon: Volume2 },
   { id: "defaults", label: "Feature Defaults", icon: FlaskConical },