- 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.
- Added `merge-coverage.ts` to combine Jest and Playwright coverage into a unified report with comprehensive statistics and thresholds.
- Included `convert-v8-to-istanbul.ts` for transforming Playwright V8 coverage into Istanbul format, enabling seamless merging.
- Introduced E2E coverage helpers for Playwright tests (`startCoverage`, `stopAndSaveCoverage`, `withCoverage`) to collect and process both V8 and Istanbul coverage.
- Configured `.nycrc.json` with coverage thresholds and reporting formats for improved visibility and enforcement.
