diff --git a/app/Services/Brief/WeeklyBriefService.php b/app/Services/Brief/WeeklyBriefService.php
index c47df12..0c5f71d 100644
--- a/app/Services/Brief/WeeklyBriefService.php
+++ b/app/Services/Brief/WeeklyBriefService.php
@@ -370,11 +370,13 @@ class WeeklyBriefService
     protected function resolvePaperTrack(Paper $paper): string
     {
         $url = strtolower((string) ($paper->crawlJob?->request_url ?? ''));
+
         foreach (array_keys(self::TRACKS) as $track) {
-            if (preg_match('#/list/'.$track.'(?:/|$|[?&#])#', $url)) {
-                return $track;
-            }
-            if (preg_match('#categories?/'.$track.'#', $url)) {
+            if (
+                str_contains($url, '/list/'.$track)
+                || str_contains($url, '/list/'.$track.'/')
+                || str_contains($url, 'categories/'.$track)
+            ) {
                 return $track;
             }
         }
diff --git a/routes/admin.php b/routes/admin.php
index ce0bc63..d98b07a 100644
--- a/routes/admin.php
+++ b/routes/admin.php
@@ -179,7 +179,9 @@ Route::prefix('admin/v1')->group(function () {
         Route::get('/weekly-briefs', [WeeklyBriefController::class, 'index'])->name('admin.weekly-briefs.index');
         Route::get('/weekly-briefs/week-options', [WeeklyBriefController::class, 'weekOptions'])->name('admin.weekly-briefs.week-options');
         Route::post('/weekly-briefs/generate', [WeeklyBriefController::class, 'generate'])->name('admin.weekly-briefs.generate');
-        Route::get('/weekly-briefs/{weeklyBrief}', [WeeklyBriefController::class, 'show'])->name('admin.weekly-briefs.show');
+        Route::get('/weekly-briefs/{weeklyBrief}', [WeeklyBriefController::class, 'show'])
+            ->whereNumber('weeklyBrief')
+            ->name('admin.weekly-briefs.show');
 
         Route::get('/dashboard/overview', [DashboardController::class, 'overview'])->name('admin.dashboard.overview');
         Route::get('/radar-map', [RadarMapController::class, 'index'])->name('admin.radar-map.index');