- Replaced legacy `useAuthStore` mocks with `useAuth` for consistency with the `AuthContext` pattern.
- Updated test cases in `Header` and `AuthGuard` to mock `AuthContext` instead of Zustand hooks.
- Improved test isolation by injecting `AuthProvider` where applicable.
- Enhance `AuthGuard` tests with 150ms delay skeleton rendering.
- Add new test files: `Skeletons.test.tsx` to validate skeleton components and `admin/page.test.tsx` for admin dashboard.
- Refactor `AuthGuard` tests to utilize `jest.useFakeTimers` for delay simulation.
- Improve coverage for loading states, fallback behavior, and rendering logic.
- Implemented comprehensive tests for `useAuth` hooks (`useIsAuthenticated`, `useCurrentUser`, and `useIsAdmin`) with mock states and coverage for edge cases.
- Added tests for `AuthGuard` to validate route protection, admin access control, loading states, and use of fallback components.
- Updated `.gitignore` to exclude `coverage.json`.