feat: add Terminal Dashboard components and state management

- Implement TerminalTabBar for session tab management with status indicators and alert badges.
- Create TerminalWorkbench to combine TerminalTabBar and TerminalInstance for terminal session display.
- Add localization support for terminal dashboard in English and Chinese.
- Develop TerminalDashboardPage for the main layout of the terminal dashboard with a three-column structure.
- Introduce Zustand stores for session management and issue/queue integration, handling session groups, terminal metadata, and alert management.
- Create a monitor web worker for off-main-thread output analysis, detecting errors and stalls in terminal sessions.
- Define TypeScript types for terminal dashboard state management and integration.

ccw/frontend/src/locales/zh/index.ts

@@ -39,6 +39,7 @@ import workspace from './workspace.json';
 import help from './help.json';
 import cliViewer from './cli-viewer.json';
 import team from './team.json';
+import terminalDashboard from './terminal-dashboard.json';
 
 /**
  * Flattens nested JSON object to dot-separated keys
@@ -101,4 +102,5 @@ export default {
   ...flattenMessages(help, 'help'),
   ...flattenMessages(cliViewer, 'cliViewer'),
   ...flattenMessages(team, 'team'),
+  ...flattenMessages(terminalDashboard, 'terminalDashboard'),
 } as Record<string, string>;