- Removed the i18n module and its related functions from the project.
- Eliminated the usage of getActiveI18n and related locale handling in various components and stores.
- Updated translation handling to use a new instance creation method.
- Cleaned up unused imports and code related to language detection and cookie management.
- Adjusted components to directly utilize the new translation setup.
Complete the i18n migration by switching runtime setup and remaining components to i18next-vue, and add shared locale constants/helpers for SSR and client language handling.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
