Group homepage tiles into vertically-buffered areas; add Get SimpleX App card

Split the home tiles into three areas with vertical spacing: accounts
(Users/Businesses/Bots), manage (Network/Notifications/Settings), and external
SimpleX (File upload + a new Get SimpleX App card). Move the Get SimpleX App link
out of the global footer into its own homepage card.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

manager/templates/base.html

@@ -303,8 +303,6 @@
       © <a href="https://bournemouthtechnology.co.uk" target="_blank" rel="noopener">Bournemouth Technology Ltd</a>
       <span class="sep">·</span>
       built on © <a href="https://simplex.chat" target="_blank" rel="noopener">SimpleX Network</a>
-      <span class="sep">·</span>
-      <a href="https://simplex.chat/downloads/" target="_blank" rel="noopener">Get SimpleX App</a>
     </footer>
   </main>
 </div>

manager/templates/home.html

@@ -8,6 +8,7 @@
   .home-head p { color: var(--muted); font-size: 14px; }
 
   .tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
+  .tiles + .tiles { margin-top: 32px; }   /* vertical buffer between areas */
   .tile {
     display: flex; flex-direction: column; gap: 8px;
     background: var(--card); border: 1px solid var(--border); border-radius: 12px;
@@ -28,6 +29,7 @@
   <h1>SimpleX Manager</h1>
 </div>
 
+<!-- Area 1: your accounts -->
 <div class="tiles">
   <a class="tile" href="/users">
     <span class="t-ico">👤</span>
@@ -44,6 +46,10 @@
     <span class="t-title">Bots</span>
     <span class="t-desc">Echo, broadcast, support, directory and dead-man's-switch bots.</span>
   </a>
+</div>
+
+<!-- Area 2: manage -->
+<div class="tiles">
   <a class="tile" href="/network">
     <span class="t-ico">📡</span>
     <span class="t-title">Network</span>
@@ -59,10 +65,19 @@
     <span class="t-title">Settings</span>
     <span class="t-desc">Theme and manager preferences.</span>
   </a>
+</div>
+
+<!-- Area 3: SimpleX (external) -->
+<div class="tiles">
   <a class="tile" href="https://simplex.chat/file/" target="_blank" rel="noopener">
     <span class="t-ico">📁</span>
     <span class="t-title">File upload</span>
     <span class="t-desc">Share files over SimpleX (opens simplex.chat).</span>
   </a>
+  <a class="tile" href="https://simplex.chat/downloads/" target="_blank" rel="noopener">
+    <span class="t-ico">📲</span>
+    <span class="t-title">Get SimpleX App</span>
+    <span class="t-desc">Download the SimpleX Chat app (opens simplex.chat).</span>
+  </a>
 </div>
 {% endblock %}