some progress

app/Http/Controllers/HealthCheckController.php

@@ -11,6 +11,27 @@ use Illuminate\View\View;
 
 class HealthCheckController extends Controller
 {
+    /**
+     * Display overview of all health checks across all sites
+     */
+    public function overview(): View
+    {
+        $sites = Site::where('user_id', Auth::id())
+            ->withCount('healthChecks')
+            ->with(['healthChecks' => function ($query) {
+                $query->where('is_active', true)->limit(5);
+            }])
+            ->get();
+
+        $stats = [
+            'total_sites' => $sites->count(),
+            'total_health_checks' => $sites->sum('health_checks_count'),
+            'sites_with_checks' => $sites->where('health_checks_count', '>', 0)->count(),
+        ];
+
+        return view('health-checks.overview', compact('sites', 'stats'));
+    }
+
     /**
      * Display a listing of the health checks for a site.
      */