TODO

Completed

Merge public and admin head/nav templates into unified templates/head.php and templates/header.php
- templates/head.php — outputs <!DOCTYPE html>…</head><body class="…">, reads $bodyClass, $isAdmin; handles admin title suffix, admin.css prepend, and OG tag suppression internally
- templates/header.php — outputs <header>…</header> with public nav + search bar or admin nav depending on $isAdmin
- Deleted: templates/public/head.php, templates/admin/head.php, templates/nav.php, templates/admin/nav.php
- All 11 admin pages and 5 public pages updated to set $bodyClass / $isAdmin and include new templates
Replace nav/header BEM custom classes with semantic HTML targeting in CSS
- common.css: .site-nav → header nav, .site-nav__logo → header nav > a, etc.
- admin.css: .admin-nav → .admin-body header nav, logout via [data-nav-logout] attribute