release: sync main with dev (about editor, journal template, icon cleanup) (#449)

Brings `main` up to `dev` after #448 realigned the two branches.

`main` had #431 (portfolio features) but was missing everything that
landed on `dev` since:

- #443 — journal sample story ships as a template, not a live entry
- #445 — last emojis in the public frontend replaced with SVG icons
- #446 — About page toggle + content editor in the admin (@lancetm714's
work, rebased)
- #448 — the merge of `main` into `dev`, resolving the `Icons.tsx` split
and porting `IconEyeOff` into the shared icon file

After this merge both branches carry the same tree. CI on #448
(type-check + tests) passed on the merged state.

---------

Co-authored-by: ralksta <ralksta@users.noreply.github.com>
Co-authored-by: lancetm714 <108419425+lancetm714@users.noreply.github.com>

app/api/admin/__tests__/admin-guards.test.ts

@@ -135,6 +135,20 @@ const ROUTES: {
     method: 'DELETE',
     args: () => [],
   },
+  {
+    name: 'GET /api/admin/about',
+    path: 'about',
+    load: () => import('../about/route'),
+    method: 'GET',
+    args: () => [],
+  },
+  {
+    name: 'PUT /api/admin/about',
+    path: 'about',
+    load: () => import('../about/route'),
+    method: 'PUT',
+    args: () => [new Request('http://localhost/api/admin/about', { method: 'PUT', body: '{}' })],
+  },
   {
     name: 'GET /api/admin/journal',
     path: 'journal',