Shared HTML frame
backend/templates/frame.html
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="theme-color" content="#1d3eb1">
<link rel="manifest" href="/shared/pwa/manifest.webmanifest">
<link rel="icon" type="image/png" href="/shared/pwa/icon-192.png">
<title>Rosetta · {title} · {example_title}</title>
<link rel="stylesheet" href="/shared/style.css">
<link rel="stylesheet" href="/shared/frame.css">
</head>
<body>
<main class="rosetta-frame">
<header class="rosetta-header">
<p class="release-status">Pre-alpha · First usable release planned for late 2026.</p>
<a class="brand" href="/">Gramlot <span>Rosetta</span></a>
<button id="install-app" type="button" hidden>Install app</button>
<span class="meta">One idea. Five implementations.</span>
</header>
<div class="master-layout">
<aside class="lesson-tree" aria-label="Course navigation">{navigation}</aside>
<div class="splitter tree-splitter" role="separator" tabindex="0" aria-label="Resize navigation" aria-orientation="vertical"></div>
<div class="master-content">{content}</div>
</div>
</main>
<script type="module" src="/shared/frame.js"></script>
<script type="module" src="/shared/pwa/install.js"></script>
</body>
</html>