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/about/route.ts

@@ -0,0 +1,113 @@
+import { NextResponse } from 'next/server';
+import { revalidatePath } from 'next/cache';
+import { promises as fs } from 'fs';
+import path from 'path';
+import yaml from 'js-yaml';
+import { isAdminAuthenticated, isAdminEnabled } from '@/lib/admin/auth';
+
+const CONTENT_DIR = path.resolve(process.cwd(), 'content');
+const FILENAME = 'about.md';
+const MAX_BACKUPS = 10;
+
+interface AboutMeta {
+  portrait?: string;
+  name?: string;
+  location?: string;
+  gear?: string[];
+}
+
+interface AboutBody {
+  meta?: AboutMeta;
+  body?: string;
+}
+
+export async function GET() {
+  if (!isAdminEnabled()) {
+    return NextResponse.json({ error: 'Admin not enabled' }, { status: 403 });
+  }
+  if (!(await isAdminAuthenticated())) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
+  }
+
+  const filePath = path.join(CONTENT_DIR, FILENAME);
+  let meta: AboutMeta = {};
+  let body = '';
+
+  try {
+    const raw = await fs.readFile(filePath, 'utf-8');
+    const match = raw.match(/^(?:---\r?\n)([\s\S]*?)(?:\r?\n---\r?\n)([\s\S]*)$/);
+    if (match) {
+      try {
+        meta = (yaml.load(match[1]) || {}) as AboutMeta;
+      } catch (e) {
+        console.error('[Admin] Failed to parse about.md frontmatter', e);
+      }
+      body = match[2].trim();
+    }
+  } catch {
+    // File doesn't exist yet — return empty defaults
+  }
+
+  return NextResponse.json({ meta, body });
+}
+
+export async function PUT(request: Request) {
+  if (!isAdminEnabled()) {
+    return NextResponse.json({ error: 'Admin not enabled' }, { status: 403 });
+  }
+  if (!(await isAdminAuthenticated())) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
+  }
+
+  const data = (await request.json().catch(() => null)) as AboutBody | null;
+  if (!data) {
+    return NextResponse.json({ error: 'Invalid request body' }, { status: 400 });
+  }
+
+  const meta = data.meta ?? {};
+
+  // Clean up empty values
+  for (const [k, v] of Object.entries(meta)) {
+    if (v === '' || v === undefined) delete meta[k as keyof AboutMeta];
+  }
+  if (meta.gear && meta.gear.length === 0) delete meta.gear;
+
+  const cleanMeta: Record<string, unknown> = { ...meta };
+  const frontmatter = yaml.dump(cleanMeta, { lineWidth: -1, noRefs: true }).trim();
+  const content = `---\n${frontmatter}\n---\n\n${data.body ?? ''}\n`;
+
+  const filePath = path.join(CONTENT_DIR, FILENAME);
+
+  // ── Backup existing file ────────────────────────────────────
+  try {
+    await fs.access(filePath);
+    const backupDir = path.join(CONTENT_DIR, '.backups');
+    await fs.mkdir(backupDir, { recursive: true });
+    const timestamp = new Date().toISOString().replace(/[:.]/g, '-');
+    await fs.copyFile(filePath, path.join(backupDir, `${FILENAME}.${timestamp}.bak`));
+
+    // Prune old backups
+    const entries = await fs.readdir(backupDir);
+    const aboutBackups = entries.filter((e) => e.startsWith(FILENAME) && e.endsWith('.bak')).sort();
+    while (aboutBackups.length > MAX_BACKUPS) {
+      await fs.unlink(path.join(backupDir, aboutBackups.shift()!));
+    }
+  } catch {
+    // File doesn't exist yet — no backup needed, but make sure the dir exists
+    await fs.mkdir(CONTENT_DIR, { recursive: true });
+  }
+
+  // ── Atomic write (temp file + rename) ───────────────────────
+  const tmpPath = `${filePath}.${process.pid}.${Date.now()}.tmp`;
+  try {
+    await fs.writeFile(tmpPath, content, 'utf-8');
+    await fs.rename(tmpPath, filePath);
+  } catch (err) {
+    await fs.unlink(tmpPath).catch(() => {});
+    throw err;
+  }
+
+  revalidatePath('/about', 'layout');
+
+  return NextResponse.json({ success: true, message: 'About page saved.' });
+}