Lets staff attach files to an appointment directly from the edit form via
local disk upload, picking a previously-saved scanned attachment, or an
inline screenshot with crop-before-save (matching the Copy Agent page's
crop UX), instead of detouring through the Copy Agent page. Also fixes a
latent data-loss bug in claim-form's save-for-appointment call, which
replaced all AppointmentFile rows instead of merging with existing ones.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
