feat(frontend): wire useProjects hook to SDK and enhance MSW handlers

- Regenerate API SDK with 77 endpoints (up from 61)
- Update useProjects hook to use SDK's listProjects function
- Add comprehensive project mock data for demo mode
- Add project CRUD handlers to MSW overrides
- Map API response to frontend ProjectListItem format
- Fix test files with required slug and autonomyLevel properties

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/tests/components/projects/ProjectCard.test.tsx

@@ -10,6 +10,7 @@ describe('ProjectCard', () => {
   const mockProject: ProjectListItem = {
     id: 'proj-1',
     name: 'Test Project',
+    slug: 'test-project',
     description: 'This is a test project description',
     status: 'active',
     complexity: 'medium',
@@ -21,6 +22,7 @@ describe('ProjectCard', () => {
     createdAt: '2025-01-01T00:00:00Z',
     owner: { id: 'user-1', name: 'Test User' },
     tags: ['frontend', 'react', 'typescript'],
+    autonomyLevel: 'milestone',
   };
 
   it('renders project name', () => {