Homepage (TDD slice 4): the pages, theme, and toggle

Red tests first, then the pages.
- tests/homepage_pages.bats: the pages reference the data + theme; no
  auto-refresh (Q41); no cursor alteration (Q28); the styling toggle strips
  to bare HTML (Q27); the footer shows the last master deployment datetime
  (Q43).
- index.html / admin.html: the user and admin pages. A grid of TUI panels,
  a summary line, the bare toggle, the deployed-at footer.
- app.js: reads status.json + services.json once (no auto-refresh), renders
  one panel per service for the page's category, the toggle, the footer.
- style.css: the terminal TUI theme (green-on-black, phosphor palette,
  scanlines) + a ?bare=1 mode that strips to unstyled HTML. No custom cursor.

Functionally verified with a Node DOM shim: 9 user panels, correct summary,
correct footer datetime.

shared/homepage/index.html

@@ -3,20 +3,21 @@
 <head>
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
-<title>Dankclaw Services</title>
+<title>frank — services</title>
 <link rel="stylesheet" href="style.css">
 </head>
 <body>
-<main>
-  <header>
-    <h1>Dankclaw Services</h1>
-    <p class="subtitle">Local server services — click a name to open it.</p>
-  </header>
-  <section id="services" class="grid" aria-live="polite"></section>
-  <footer>
-    <p>Status is checked from this page. See <a href="docs/Infrastructure/Homepage.md">Homepage</a> for details.</p>
-  </footer>
-</main>
+<header class="top">
+  <span class="title">frank@home:~$ services</span>
+  <a id="bare-toggle" class="toggle" href="?bare=1">bare</a>
+</header>
+<div id="summary" class="summary"></div>
+<main id="grid" class="grid"></main>
+<footer class="foot">
+  <span>last master deployment: <span id="deployed-at"></span></span>
+  <a href="/admin/">admin</a>
+</footer>
+<script src="deployed.js"></script>
 <script src="app.js"></script>
 </body>
 </html>