feat: make mobile Home task-first with Insights (Closes #994)

frontend/index.html

@@ -16,6 +16,7 @@
   <details class="app-menu">
     <summary id="app-menu-toggle" aria-label="Open dashboard menu">Menu</summary>
     <div class="app-menu-panel">
+      <button id="open-insights" type="button" aria-controls="insights-sheet">Insights</button>
       <button id="refresh">Refresh</button>
       <button id="open-palette">Command</button>
       <button id="open-device-setup" type="button">Device setup</button>
@@ -273,6 +274,11 @@
       </div>
     </div>
   </section>
+  <section class="insights-shell" id="insights-sheet" aria-labelledby="insights-heading">
+    <div class="insights-header">
+      <div><h2 id="insights-heading">Insights</h2><p class="small muted">Context, activity, live signals, and workspace tools.</p></div>
+      <button id="close-insights" type="button">Close</button>
+    </div>
   <aside class="sidebar">
     <details class="panel stack" data-panel-key="context" open>
       <summary><h2>Context &amp; view</h2></summary>
@@ -334,6 +340,7 @@
       <div id="md-preview" style="margin-top:8px;"></div>
     </details>
   </aside>
+  </section>
 </main>
 
 <div class="plan-today-sheet" id="plan-today-sheet" role="dialog" aria-modal="true" aria-labelledby="plan-today-title" hidden>
@@ -1628,6 +1635,7 @@
 <script src="static/update-decision-transaction.js"></script>
 <script src="static/agenda-session-launcher.js"></script>
 <script src="static/mobile-launch.js"></script>
+<script src="static/mobile-insights.js"></script>
 <script src="static/mobile-app-shortcuts.js"></script>
 <script src="static/install-app.js"></script>
 <script src="static/mobile-device-setup.js"></script>