Fix bugbot comments in latest pr

[J2TeamNNL]

Fix bugbot comments by replacing hardcoded Vietnamese text with i18n and updating the version number.

This PR addresses bugbot's feedback, ensuring 100% i18n compliance by externalizing all UI strings and correcting the version displayed in index.html to match the CHANGELOG.

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Note

Externalizes hardcoded UI text to i18n (alerts, logo upload, error report), adds dynamic language updates for the error report UI, and bumps version to 2.2.0.

• Internationalization (i18n):
  • Replace hardcoded Vietnamese strings with LanguageManager.translate(...) in js/app.js (logo processing messages) and js/qr-generator.js (alerts, image/logo errors).
  • Localize error report modal and floating button in js/logger.js with dynamic data-i18n-dynamic elements and runtime updates on language change.
  • Add new translation keys for alerts, logo status, and error report strings in js/translations.js for both vi and en.
• UI/Meta:
  • Update version in index.html header from v2.1.0 to v2.2.0.

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Cursor Agent can help with this pull request. Just @cursor in comments and I'll start working on changes in this branch.
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