feat: v1.5.0 + service actions + remove duplicate apk

- Services tab: start/stop/restart/reload via dialog
- Backend: POST /api/servers/:id/service-action
- Removed duplicate APK download from dashboard view
- Version bump to 1.5.0

views/dashboard/index.php

@@ -52,13 +52,6 @@ $recentActivity = $recentActivity ?? [];
             <span class="stat-label">Avg Disk</span>
         </div>
     </div>
-    <a href="/sysadmin.apk" class="stat-card stat-card-info" download style="text-decoration:none; cursor:pointer;">
-        <div class="stat-icon"><i class="fas fa-download"></i></div>
-        <div class="stat-info">
-            <span class="stat-value">v1.0</span>
-            <span class="stat-label">Android App</span>
-        </div>
-    </a>
 </div>
 
 <div class="dashboard-grid">