Collabs, as a third configuration of one panel

The same object as a collection and a gallery piece, so it is a config in
subjects.ts and a one-line panel — no new screen.

Two differences, both deliberate. It has no SPECS: a collab is a project rather
than an object, so there is no measurement or raw material and the form is a
name, an address and a description. And its title column is `project_name`,
which is the client's word and stays — the site's API publishes both that and
`title` so this panel reads one field like every other section, and the
translation lives in one router rather than as a branch in every screen.

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

web/sections/subjects.ts

@@ -1,5 +1,5 @@
 import type { LucideIcon } from 'lucide-react';
-import { Boxes, Shapes } from 'lucide-react';
+import { Boxes, Handshake, Shapes } from 'lucide-react';
 
 /**
  * The two sections whose rows are drawn through a template — collections, and gallery pieces.
@@ -42,6 +42,16 @@ export type Collection = SubjectRecord & {
   delivery_time: string | null;
 };
 
+export type Collab = SubjectRecord & {
+  /**
+   * The client's word for the title, carried alongside `title`.
+   *
+   * The column really is `project_name` — see the site's collabs schema — and the wire publishes both
+   * so this panel can go on reading `title` like every other section. Writes accept either.
+   */
+  project_name: string;
+};
+
 export type Piece = SubjectRecord & {
   descriptive_text: string | null;
   measurement: string | null;
@@ -85,6 +95,22 @@ export const COLLECTIONS: SubjectSection<Collection> = {
   long: ['descriptive_text'],
 };
 
+export const COLLABS: SubjectSection<Collab> = {
+  param: 'collab',
+  endpoint: '/fofos-admin/collabs',
+  base: '/collabs',
+  icon: Handshake,
+  noun: 'collab',
+  /*
+    No specs, and that is the difference.
+
+    A collab is a PROJECT rather than an object — there is no measurement, no raw material, no
+    colours to list. The form is a name, an address and a description, which is all the sitemap gives
+    it, and the template carries no specs block to draw.
+  */
+  specs: [],
+};
+
 export const PIECES: SubjectSection<Piece> = {
   param: 'piece',
   endpoint: '/fofos-admin/pieces',