- Introduced `.junie/guidelines.md` to outline project setup, code conventions, and structure.
- Updated `env.d.ts` and `vite.config.js` to standardize `VITE_COMMIT_HASH` usage.
- Integrated build date, version, and commit hash generation in `vite.config.js`.
- Enhanced `MobileNavigation.vue` to display build metadata and development mode info.
- Added type definitions in `env.d.ts` for environment variables.