- Show import progress dialog when adding Gemini API key with model
list, completion status, and Close button
- Remove hardcoded Gemini model registry — models come exclusively
from Google API sync per API key
- Hide "Import from /models" button for Gemini (sync handles it)
- Remove server-side fire-and-forget auto-sync (client handles it)
- Categorize synced Gemini models by endpoint type in catalog:
embedding, image, and audio (transcription + speech)
- Add modelsImported and close i18n keys to all 33 languages