Gallery, Drops and Collabs

Three sections, one panel, configured — the same split the site's API already makes. Each is a titled
record with an ordered list of media hanging off it, and the only real differences are what the title
is called and which extra fields the record carries.

The htmx admin had three screens and that was defensible there, because each carried its own markup as
well. There is no markup to differ here, so three panels would be three places to fix one ordering bug.

The `fields` list in records.ts is the FORM for what the server allows, not a second authority over it.
What may actually be written is decided by `valuesFrom` in the site's sections.ts, per section, as an
allowlist — a key added here that the server does not accept is an input that silently saves nothing.

Which record is open lives in `?record=<id>` beside `?section=`, per docs/navigation-audit.md, and the
detail is loaded from that id rather than carried over from the list. That is what makes a typed or
reloaded URL work, and it is guarded against a slow response for a record nobody is looking at any
more overwriting a fast one for the record they opened next.

Ordering sends every id in the order it should be, so two items cannot claim one position. Media is
added one path at a time because the server appends, and a parallel add would land in whatever order
the requests happened to finish.

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

web/sections.ts

@@ -107,7 +107,7 @@ export const SECTIONS: Section[] = [
     icon: Images,
     hint: 'Standalone pieces',
     path: '/fofos-admin/gallery',
-    built: false,
+    built: true,
     requires: 'connection',
   },
   {
@@ -116,7 +116,7 @@ export const SECTIONS: Section[] = [
     icon: Handshake,
     hint: 'Projects with other people',
     path: '/fofos-admin/collabs',
-    built: false,
+    built: true,
     requires: 'connection',
   },
   {
@@ -125,7 +125,7 @@ export const SECTIONS: Section[] = [
     icon: Sparkles,
     hint: 'Releases',
     path: '/fofos-admin/drops',
-    built: false,
+    built: true,
     requires: 'connection',
   },
   {