feat(KB-655): merge dashboard multi-project and workflow improvements

- Add multi-project migration, CLI project selection, and dashboard overview/setup flows
- Introduce missions, quick scripts, comments unification, and changed-files/task detail enhancements
- Improve dashboard UX with mobile header fixes, quick entry behavior, title truncation, and modal rendering fixes
- Strengthen engine and storage behavior with build verification before merge, setup-script support, Claude usage/auth fixes, and expanded test coverage

packages/dashboard/app/components/__tests__/ListView.test.tsx

@@ -1777,6 +1777,10 @@ describe("ListView - Bulk Selection", () => {
     ];
     render(<ListView tasks={tasks} onMoveTask={vi.fn()} onOpenDetail={vi.fn()} addToast={mockAddToast} />);
 
+    // Click "Show Done" to make archived tasks visible
+    const showDoneButton = screen.getByRole("button", { name: /show done/i });
+    fireEvent.click(showDoneButton);
+
     const checkbox = screen.getByLabelText("Select FN-001");
     expect(checkbox).toBeDisabled();
   });