- Replaced static paths with dynamic locale subpaths (`/[locale]/*`) in imports, URLs, and assertions across tests.
- Updated `next-intl` mocks for improved compatibility with `locale`-aware components.
- Standardized `page.goto` and navigation tests with `/en` as the base locale for consistency.
- Consolidated multi-line arguments into single lines where appropriate in `useAuth`.
- Improved spacing and readability in data processing across components (`ProfileSettingsForm`, `PasswordChangeForm`, `SessionCard`).
- Applied consistent table and markdown formatting in design system docs (e.g., `README.md`, `08-ai-guidelines.md`, `00-quick-start.md`).
- Updated code snippets to ensure adherence to Prettier rules and streamlined JSX structures.
- Consolidated and modularized `eslint.config.mjs` with defined rules for source, test, E2E, and scripts.
- Improved test and E2E rules with relaxed settings for flexibility and enhanced mocking.
- Standardized variable naming and removed redundant imports in unit and E2E tests.
- Updated error handling and comments to align with modern TypeScript best practices (e.g., `@ts-expect-error`).
- 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.
- **ThemeToggle:** Introduce comprehensive tests to validate button functionality, dropdown options, and active theme indicators.
- **ThemeProvider:** Add tests for theme management, localStorage persistence, system preferences, and DOM updates.
- **Header & Footer:** Verify header rendering, user menu functionality, and footer content consistency.
- **AuthInitializer:** Ensure authentication state is correctly loaded from storage on mount.
