feat: add CliStreamMonitor and related components for CLI output streaming

- Implemented CliStreamMonitor component for real-time CLI output monitoring with multi-execution support.
- Created JsonFormatter component for displaying JSON content in various formats (text, card, inline).
- Added utility functions for JSON detection and formatting in jsonUtils.ts.
- Introduced LogBlock utility functions for styling CLI output lines.
- Developed a new Collapsible component for better UI interactions.
- Created IssueHubPage for managing issues, queue, and discovery with tab navigation.

ccw/frontend/src/components/issue/hub/index.ts

@@ -0,0 +1,10 @@
+// ========================================
+// Issue Hub Components Export
+// ========================================
+
+export { IssueHubHeader } from './IssueHubHeader';
+export { IssueHubTabs } from './IssueHubTabs';
+export { IssuesPanel } from './IssuesPanel';
+export { QueuePanel } from './QueuePanel';
+export { DiscoveryPanel } from './DiscoveryPanel';
+export { type IssueTab } from './IssueHubTabs';