The media allowlist refused any upload whose multipart part had an empty or
application/octet-stream Content-Type before looking at the extension or the
bytes. Browsers take that header from File.type, which mobile browsers leave
empty when the OS cannot classify a picked file, while the client-side gate
already accepts such files on extension alone. A real JPG/MP4/MOV could pass
the dialog and still be refused by the API.
Only an undetermined type now falls back to the extension. The resolved type
still goes through the SH-171 document/category rule, the extension pairing,
and the magic-byte signature check, so an octet-stream .pdf stays refused for
Completion, Before and After, and a declared type is never overridden.
The completion-document endpoint persisted whatever file it received: the
only checks were non-null, non-empty, and a 30 MB request limit. Its sibling
media endpoint has enforced a MIME allowlist, MIME-to-extension pairing, and
a magic-byte signature check since SH-116.
Validate before the file reaches storage, so a rejected upload leaves nothing
behind. An undetermined content type is accepted only alongside a .pdf name
and a %PDF- signature, because the browser leaves File.type empty when the OS
cannot classify the file and the completion-doc dialog already allows that.
Enforce MIME/extension/magic-byte validation, auth and workOrderVersion concurrency, audit on category changes, and validate-before-store with blob compensate.
Expose completedDate on PATCH /workorders/{id}/board so CompDoc can leave legacy EditWorkorder. Allow optional media category on upload, PATCH category afterward, and enforce JPG/PNG/MP4/MOV allowlist (SH-116).
