- Introduced comprehensive unit tests for `generateLocalizedMetadata` and `generatePageMetadata` utilities.
- Enhanced `siteConfig` validation assertions for structure and localization support.
- Updated metadata generation to handle empty paths, canonical URLs, language alternates, and Open Graph data consistently.
- Annotated server-side middleware with istanbul ignore for coverage clarity.
- Relocated `i18n` configuration files to `src/lib/i18n` for better organization.
- Removed obsolete `request.ts` and `routing.ts` files, simplifying `i18n` setup within the project.
- Added extensive tests for `i18n/utils` to validate locale-related utilities, including locale name, native name, and flag retrieval.
- Introduced a detailed `I18N_IMPLEMENTATION_PLAN.md` to document implementation phases, decisions, and recommendations for future extensions.
- Enhanced TypeScript definitions and modularity across i18n utilities for improved developer experience.
