- Mysteries tab: "+ New" (slug + title) and per-row delete; opens the graph editor.
- Assets tab: upload images/audio/PDFs to the shared osint.assets store, grid with
thumbnails/icons, copy id/url, delete (blocked with 409 when the asset is in use).
- Cutscene component_key is now a datalist of registered keys with a
"not registered" warning, instead of free text.
Backend: DELETE /api/admin/mysteries/:id and POST/GET/DELETE /api/admin/assets
(reusing the deduplicated, MinIO-backed asset store).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>