test(frontend): update tests for type changes

Update all test files to use correct enum values:
- AgentPanel, AgentStatusIndicator tests
- ProjectHeader, StatusBadge tests
- IssueSummary, IssueTable tests
- StatusBadge, StatusWorkflow tests (issues)

frontend/tests/features/issues/components/StatusWorkflow.test.tsx

@@ -22,7 +22,6 @@ describe('StatusWorkflow', () => {
     expect(screen.getByText('In Progress')).toBeInTheDocument();
     expect(screen.getByText('In Review')).toBeInTheDocument();
     expect(screen.getByText('Blocked')).toBeInTheDocument();
-    expect(screen.getByText('Done')).toBeInTheDocument();
     expect(screen.getByText('Closed')).toBeInTheDocument();
   });