Fix stale Staff On Site count after sign-out.

Compute staff presence stats outside the dashboard cache so counts update immediately when employees sign out.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/Feature/FrontdeskEmployeePresenceTest.php

@@ -10,6 +10,7 @@ use App\Models\Organization;
 use App\Models\User;
 use App\Services\Frontdesk\EmployeePresenceService;
 use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Cache;
 use Tests\TestCase;
 
 class FrontdeskEmployeePresenceTest extends TestCase
@@ -155,4 +156,25 @@ class FrontdeskEmployeePresenceTest extends TestCase
             ->assertSee('Jane Staff', false)
             ->assertSee('Staff on premises', false);
     }
+
+    public function test_dashboard_staff_on_site_updates_immediately_after_sign_out(): void
+    {
+        Cache::flush();
+
+        $employee = $this->createEmployee();
+        $service = app(EmployeePresenceService::class);
+        $service->signIn($employee);
+
+        $this->actingAs($this->user)
+            ->get(route('frontdesk.dashboard'))
+            ->assertOk()
+            ->assertViewHas('stats', fn (array $stats) => $stats['staff_on_site'] === 1);
+
+        $service->signOut($employee);
+
+        $this->actingAs($this->user)
+            ->get(route('frontdesk.dashboard'))
+            ->assertOk()
+            ->assertViewHas('stats', fn (array $stats) => $stats['staff_on_site'] === 0);
+    }
 }