feat(storage): retire photos as a configurable category — served-only via the ServedCategory seam

shared/src/storage/storage.schema.spec.ts

@@ -127,17 +127,21 @@ describe('storageConfigSchema wire compatibility', () => {
     expect(storageConfigSchema.safeParse({ backends: [], categories: { backups: '' } }).success).toBe(false);
   });
 
-  it('exposes the canonical nine-category list (relocated from the server)', () => {
+  it('exposes the canonical eight-category list — photos is served-legacy, retired from config', () => {
     expect(STORAGE_CATEGORIES).toEqual([
       'files',
       'journey',
       'covers',
       'avatars',
       'places',
-      'photos',
       'photos-google',
       'photos-trek',
       'backups',
     ]);
   });
+
+  it('rejects the retired photos category in a config document', () => {
+    const result = storageConfigSchema.safeParse({ backends: [], categories: { photos: 'uploads-local' } });
+    expect(result.success).toBe(false);
+  });
 });

shared/src/storage/storage.schema.ts

@@ -17,9 +17,11 @@ import { z } from 'zod';
  */
 
 /**
- * Canonical category list — relocated here from server storage.types.ts
- * (which re-exports it) because the wire schema needs it and a second copy
- * is forbidden.
+ * Canonical CONFIGURABLE category list — relocated here from server
+ * storage.types.ts (which re-exports it) because the wire schema needs it and
+ * a second copy is forbidden. The legacy `photos` directory is served and
+ * backed up but not configurable — the server's SERVED_CATEGORIES extension
+ * (storage.types.ts) carries it.
  */
 export const STORAGE_CATEGORIES = [
   'files',
@@ -27,7 +29,6 @@ export const STORAGE_CATEGORIES = [
   'covers',
   'avatars',
   'places',
-  'photos',
   'photos-google',
   'photos-trek',
   'backups',