Any image/* or video/* type passed the client check, so GIF, WebP and WebM
were only rejected after upload. Resolve the kind from the same allowlist
the server uses: an allowlisted browser type, otherwise the extension.
Photos up to 10 MB (JPG/PNG/HEIC), videos up to 100 MB and 90 s (MP4/MOV),
at most 10 photos and 3 videos per work order, pre-validated with stable
generic messages on the Photos & Videos modal, the Completion Doc media tab,
Extra Docs and the vendor portal. Video duration is read from metadata when
the browser can; unreadable metadata never blocks. Mobile MIME variants
(empty type, octet-stream with a video extension, QuickTime) stay accepted.
The signed completion PDF keeps its 50 MB cap.
