feat: one-page panel - shell with Машины, Терминал and Настройки, pages as fragments, forms sent in place

internal/server/web/templates/layout.html

@@ -0,0 +1,16 @@
+{{define "head"}}<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<link rel="stylesheet" href="{{asset "app.css"}}">
+<script src="{{asset "pin.js"}}"></script>
+<script src="{{asset "scroll.js"}}" defer></script>{{end}}
+
+{{define "topbar"}}<header class="topbar">
+  <div class="brand"><a class="home" href="/" title="К списку машин">LPRA</a> · <span id="brandtitle">Удалённый доступ</span></div>
+  <nav>
+    <a href="/" data-nav="machines">Машины</a>
+    <a href="/terminal" data-nav="terminal">Терминал</a>
+    {{if .IsAdmin}}<a href="/settings" data-nav="settings">Настройки</a>{{end}}
+    <span id="status" class="muted"></span>
+    <button type="button" class="btn ghost icon acct-btn" id="acct" title="Аккаунт" aria-label="Аккаунт"><svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="8" r="4"/><path d="M4 21a8 8 0 0 1 16 0"/></svg></button>
+  </nav>
+</header>{{end}}