Add shared/i18n.js: client-side language detection snippet.
- Detects browser language via navigator.language
- Falls back to German, stores preference in localStorage
- Swaps text via data-de/data-en attributes on any element
- Handles <title>, <meta>, and regular elements
- Optional toggle button via data-i18n-toggle attribute
- Exposes window.onepagerI18n API for programmatic use
Pilot implementation on ichbinotto.de:
- All visible text annotated with data-de/data-en
- Language toggle button in footer
- Title and meta description translated
Implements Gitea issue #1 (pilot phase).
b9191b3495