feat: add SpecDialog component for editing spec frontmatter

- Implement SpecDialog for managing spec details including title, read mode, priority, and keywords.
- Add validation and keyword management functionality.
- Integrate SpecDialog into SpecsSettingsPage for editing specs.

feat: create index file for specs components

- Export SpecCard, SpecDialog, and related types from a new index file for better organization.

feat: implement SpecsSettingsPage for managing specs and hooks

- Create main settings page with tabs for Project Specs, Personal Specs, Hooks, Injection, and Settings.
- Integrate SpecDialog and HookDialog for editing specs and hooks.
- Add search functionality and mock data for specs and hooks.

feat: add spec management API routes

- Implement API endpoints for listing specs, getting spec details, updating frontmatter, rebuilding indices, and initializing the spec system.
- Handle errors and responses appropriately for each endpoint.

ccw/frontend/src/pages/index.ts

@@ -38,3 +38,4 @@ export { TeamPage } from './TeamPage';
 export { TerminalDashboardPage } from './TerminalDashboardPage';
 export { SkillHubPage } from './SkillHubPage';
 export { AnalysisPage } from './AnalysisPage';
+export { SpecsSettingsPage } from './SpecsSettingsPage';