- Enable minijinja 'json' feature so the tojson filter is available in
the Memories.html template (was causing 'unknown filter' render error)
- Replace window.location.href downloads with fetch+blob so the
Authorization header is sent (window.location.href caused 401)
DB: reset failed HTML export job to pending and cleared export_released_at
so the gallery can be re-released to trigger a fresh HTML export.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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