The board and slide-over cancel a work order through the lifecycle status
patch, which set Canceled without touching uplifts, so a pending uplift
stayed in the approval queue. A patch to Canceled now withdraws pending
uplifts in the same save, each with its own uplift_cancel audit entry, and
runs under the per-work-order gate uplift create uses.
The 10-photo / 3-video cap was a check-then-insert with no lock on both
upload surfaces, so two overlapping uploads could both take the last slot.
The board media upload and the vendor portal upload now run count, insert
and save inside ExecuteWorkOrderMutationAsync. GetMediaContent maps .heic
to image/heic.
