Styling: repaint FilePond's default light drop zone/thumbnails/actions with
the Field Notes dark tokens so the picker matches the site palette.
Reordering: enable FilePond drag-reorder (allowReorder, itemInsertLocation
'after'). FilePond does NOT re-sequence its submitted data[photos][] inputs on
reorder, so post-form.js sends the visual order as a top-level `photo_order`
POST key on submit. cache-on-save reads it from $_POST (after add-page-by-form
copies the files, priority -100) and renames them photo-1..N in that order —
which the entry honours since it lists media by filename and treats the first
as hero. The order key is top-level (not data[...]), so it never lands in the
entry frontmatter. Best-effort + self-idempotent: locates the new entry folder
by the uploaded filenames and no-ops if they're already renamed.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>