PWA:
- Switch to createOfflineFirstPWAConfig for offline-first PWA support
- Configure with Picture branding (purple theme, German metadata)
Replicate API timeouts:
- Add AbortController-based timeouts to all 7 fetch calls
- Create prediction: 30s, poll status: 60s, cancel: 10s, image fetch: 30s
- Polling timeouts are non-fatal (logged as warning, retry continues)
Batch service fix:
- Join images table via leftJoin to return actual imageUrl
- Previously always returned null (TODO comment)
New endpoints:
- GET /api/v1/generate/credits — returns credit balance, earned, spent
- GET /api/v1/generate/history — paginated generation history with images
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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