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/about/page.tsx

@@ -10,6 +10,8 @@ import Image from 'next/image';
 import type { Metadata } from 'next';
 import { imageUrl, assetPlaceholder } from '@/lib/urls';
 import { immich } from '@/lib/immich';
+import { getConfig } from '@/lib/config';
+import { notFound } from 'next/navigation';
 import './about.css';
 
 export const dynamic = 'force-dynamic';
@@ -68,6 +70,9 @@ export async function generateMetadata(): Promise<Metadata> {
 }
 
 export default async function AboutPage() {
+  const config = getConfig();
+  if (!config.aboutEnabled) notFound();
+
   const { meta, body } = await getAboutContent();
 
   // Fetch ThumbHash for portrait placeholder