feat: Implement terminal panel for command execution and monitoring

- Added TerminalPanel component with navigation and main area for terminal interactions.
- Integrated terminal session management with CLI execution output display.
- Enhanced SolutionDrawer to open terminal panel on command execution.
- Updated localization files for terminal panel strings in English and Chinese.
- Introduced hooks for terminal panel state management.
- Created JSON schemas for plan overview and fix plan types.

ccw/frontend/src/components/layout/AppShell.tsx

@@ -11,6 +11,7 @@ import { Sidebar } from './Sidebar';
 import { MainContent } from './MainContent';
 import { CliStreamMonitor } from '@/components/shared/CliStreamMonitor';
 import { NotificationPanel } from '@/components/notification';
+import { TerminalPanel } from '@/components/terminal-panel';
 import { AskQuestionDialog, A2UIPopupCard } from '@/components/a2ui';
 import { BackgroundImage } from '@/components/shared/BackgroundImage';
 import { useNotificationStore, selectCurrentQuestion, selectCurrentPopupCard } from '@/stores';
@@ -200,6 +201,9 @@ export function AppShell({
         onClose={handleNotificationPanelClose}
       />
 
+      {/* Terminal Panel - Global Drawer */}
+      <TerminalPanel />
+
       {/* Ask Question Dialog - For ask_question MCP tool (legacy) */}
       {currentQuestion && (
         <AskQuestionDialog