a gallery is a carousel

It always rendered as one — data-carousel, a snap track, two arrows, driven by
carousel.client.js. The entity was the last thing still calling it something
else, and that collided with the site's own Gallery section: two nav rows
reading Gallery and Galleries, meaning a list of objects and a list of
photograph sets.

GalleriesPanel, GalleryPicker and GalleryItems become Carousels*, the endpoint
becomes /fofos-admin/carousels, the block kind becomes carousel and
subject-gallery becomes subject-carousel. The publish allowlist follows the
renamed tables.

What did NOT move: GALLERY_CONFIG at /fofos-admin/gallery, subjects.ts's
base '/gallery', and home_gallery_media. Those are the Gallery section and the
legacy rows, and both are correct.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

web/sections/AddComponentDialog.tsx

@@ -26,7 +26,7 @@ import { Dialog, DialogContent, DialogHeader, DialogTitle } from '@/components/u
 export type ComponentKind =
   | 'free-text'
   | 'media'
-  | 'gallery'
+  | 'carousel'
   | 'contact-form'
   | 'partners'
   | 'collections'
@@ -35,7 +35,7 @@ export type ComponentKind =
   | 'subject-title'
   | 'subject-description'
   | 'subject-specs'
-  | 'subject-gallery';
+  | 'subject-carousel';
 
 /*
   The blocks that draw whatever the page is ABOUT.
@@ -48,7 +48,7 @@ export const SUBJECT_KINDS: ComponentKind[] = [
   'subject-title',
   'subject-description',
   'subject-specs',
-  'subject-gallery',
+  'subject-carousel',
 ];
 
 type Choice = {
@@ -62,7 +62,7 @@ type Choice = {
  * `kind: null` means not built.
  *
  * Named rather than omitted, and the ones named are things the site already HAS — media, video and
- * galleries all exist as concepts here. That is the difference between saying what is coming and
+ * carousels all exist as concepts here. That is the difference between saying what is coming and
  * inventing a roadmap. Gallery stopped being one of them on 2026-08-31: the set, its ordering and the
  * carousel that draws it were all already built, so the block is a reference to one.
  */
@@ -77,7 +77,7 @@ export const CHOICES: Choice[] = [
     always done.
   */
   { kind: 'media', label: 'Media', hint: 'A photograph or a video, from the media store', Icon: Image },
-  { kind: 'gallery', label: 'Gallery', hint: 'A named set of media', Icon: Images },
+  { kind: 'carousel', label: 'Carousel', hint: 'A named set of media', Icon: Images },
   /*
     Three that place something the site already draws.
 
@@ -108,7 +108,7 @@ export const CHOICES: Choice[] = [
   { kind: 'subject-title', label: 'Its name', hint: 'What this page is about', Icon: Heading },
   { kind: 'subject-description', label: 'Its description', hint: 'What was written about it', Icon: Type },
   { kind: 'subject-specs', label: 'Its specs', hint: 'Measurement, material, colours, and the rest', Icon: Ruler },
-  { kind: 'subject-gallery', label: 'Its photographs', hint: 'The gallery it points at', Icon: Images },
+  { kind: 'subject-carousel', label: 'Its photographs', hint: 'The gallery it points at', Icon: Images },
 ];
 
 export const AddComponentDialog = ({