fix: image transforms via Sharp, model photos crash, video duration
- Backend: add Sharp image transform endpoint (/assets/:id?transform=X)
with presets: mini(64), thumbnail(200), preview(480), medium(960), banner(1280)
Transformed images are cached as webp next to originals
- Frontend: fix model photos crash (p.directus_files_id → p)
- Frontend: fix model banner URL (data.model.banner.id → data.model.banner)
- Frontend: fix video duration display (video.movie.duration → video.movie_file?.duration)
across models/[slug], videos, videos/[slug], and home pages
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>