diff --git a/app/Http/Controllers/Admin/AdminPageController.php b/app/Http/Controllers/Admin/AdminPageController.php
index d3df3a995..abc01c9af 100644
--- a/app/Http/Controllers/Admin/AdminPageController.php
+++ b/app/Http/Controllers/Admin/AdminPageController.php
@@ -11,6 +11,7 @@ use App\Services\SiteStatusService;
 use App\Services\SystemMetricsService;
 use App\Services\UserStatsService;
 use Illuminate\Http\JsonResponse;
+use Illuminate\Support\Carbon;
 
 class AdminPageController extends BasePageController
 {
@@ -120,7 +121,7 @@ class AdminPageController extends BasePageController
         ];
 
         $generatedAt = $payload['generated_at'] ?? now()->toIso8601String();
-        $generatedAtCarbon = \Illuminate\Support\Carbon::parse($generatedAt);
+        $generatedAtCarbon = Carbon::parse($generatedAt);
 
         return response()->json([
             'success' => true,
diff --git a/app/Models/UserActivityStat.php b/app/Models/UserActivityStat.php
index e3205b099..1905c64f1 100644
--- a/app/Models/UserActivityStat.php
+++ b/app/Models/UserActivityStat.php
@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace App\Models;
 
+use App\Services\UserStatsService;
 use Carbon\Carbon;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
@@ -113,7 +114,7 @@ class UserActivityStat extends Model
      * Sums closed days from `user_activity_stats` and today's closed hours
      * from `user_activity_stats_hourly`. The current in-progress hour is not
      * included here — callers needing live "today" totals should use
-     * {@see \App\Services\UserStatsService::getSummaryStats()} which layers
+     * {@see UserStatsService::getSummaryStats()} which layers
      * the live tables on top.
      */
     public static function getTotalDownloads(int $days = 7): int
diff --git a/tests/Feature/AdminDashboardAutoRefreshTest.php b/tests/Feature/AdminDashboardAutoRefreshTest.php
index d57abb82b..bb2c9ac38 100644
--- a/tests/Feature/AdminDashboardAutoRefreshTest.php
+++ b/tests/Feature/AdminDashboardAutoRefreshTest.php
@@ -50,7 +50,7 @@ class AdminDashboardAutoRefreshTest extends TestCase
         // Auto-refresh interval is preserved.
         $this->assertStringContainsString('15 * 60 * 1000', $content);
         // The fetch hits the cached JSON endpoint.
-        $this->assertStringContainsString("this.\$el.dataset.dataUrl", $content);
+        $this->assertStringContainsString('this.$el.dataset.dataUrl', $content);
         // Each tick re-renders headline tiles + registration status + the
         // visible "Last refresh" label, not just the deferred widgets.
         $this->assertStringContainsString('_renderHeadlineStats(payload.stats)', $content);
diff --git a/tests/Feature/AdminDashboardSummaryWindowTest.php b/tests/Feature/AdminDashboardSummaryWindowTest.php
index 5fe57050c..065376862 100644
--- a/tests/Feature/AdminDashboardSummaryWindowTest.php
+++ b/tests/Feature/AdminDashboardSummaryWindowTest.php
@@ -31,13 +31,13 @@ class AdminDashboardSummaryWindowTest extends TestCase
 
         // 7-day window inclusive of today (today-6 .. today).
         $this->assertStringContainsString(
-            "\$weekStart = Carbon::now()->subDays(6)->startOfDay();",
+            '$weekStart = Carbon::now()->subDays(6)->startOfDay();',
             $content,
             'Summary window must be the last 7 calendar days inclusive of today.'
         );
 
         // Closed days from the daily aggregate, strictly before today.
-        $this->assertStringContainsString("UserActivityStat::query()", $content);
+        $this->assertStringContainsString('UserActivityStat::query()', $content);
         $this->assertStringContainsString(
             "->where('stat_date', '>=', \$weekStart->format('Y-m-d'))",
             $content
@@ -88,7 +88,7 @@ class AdminDashboardSummaryWindowTest extends TestCase
         // The previous "two-days-ago" boundary that produced the under-reporting
         // bug must be gone from getSummaryStats.
         $this->assertStringNotContainsString(
-            "\$twoDaysAgo = Carbon::now()->subDays(2)->startOfDay();",
+            '$twoDaysAgo = Carbon::now()->subDays(2)->startOfDay();',
             $content
         );
     }
@@ -165,4 +165,3 @@ class AdminDashboardSummaryWindowTest extends TestCase
         );
     }
 }
-