feat: add i18n support for Vietnamese and English

app/Filament/Widgets/HandlerPerformanceWidget.php

@@ -5,15 +5,22 @@ namespace App\Filament\Widgets;
 use App\Models\Department;
 use App\Models\Feedback;
 use Filament\Widgets\ChartWidget;
+use Illuminate\Contracts\Support\Htmlable;
 
 class HandlerPerformanceWidget extends ChartWidget
 {
-    protected ?string $heading = 'Avg Processing Time by Handler';
-
-    protected ?string $description = 'Average time from ticket creation to resolution, broken down by handler.';
-
     protected int|string|array $columnSpan = 'full';
 
+    public function getHeading(): string | Htmlable | null
+    {
+        return __('app.widget_avg_time_by_handler');
+    }
+
+    public function getDescription(): string | Htmlable | null
+    {
+        return __('app.widget_avg_time_by_handler_desc');
+    }
+
     protected function getType(): string
     {
         return 'bar';
@@ -39,19 +46,18 @@ class HandlerPerformanceWidget extends ChartWidget
             ->with('assignedTo')
             ->get();
 
-        $labels = $handlers->map(fn ($h) => $h->assignedTo?->name ?? 'Unknown')->toArray();
+        $labels = $handlers->map(fn ($h) => $h->assignedTo?->name ?? __('app.widget_unknown'))->toArray();
         $data = $handlers->map(fn ($h) => round($h->avg_minutes, 1))->toArray();
 
-        // Generate gradient colors based on performance
         $maxMinutes = max($data) ?: 1;
         $colors = collect($data)->map(function ($minutes) use ($maxMinutes) {
             $ratio = $minutes / $maxMinutes;
             if ($ratio > 0.8) {
-                return 'rgba(220, 38, 38, 0.8)'; // Red for slow
+                return 'rgba(220, 38, 38, 0.8)';
             } elseif ($ratio > 0.5) {
-                return 'rgba(217, 119, 6, 0.8)'; // Amber for medium
+                return 'rgba(217, 119, 6, 0.8)';
             }
-            return 'rgba(26, 86, 219, 0.8)'; // Blue for fast
+            return 'rgba(26, 86, 219, 0.8)';
         })->toArray();
 
         $borderColors = collect($data)->map(function ($minutes) use ($maxMinutes) {
@@ -67,7 +73,7 @@ class HandlerPerformanceWidget extends ChartWidget
         return [
             'datasets' => [
                 [
-                    'label' => 'Avg Time (minutes)',
+                    'label' => __('app.widget_avg_time_minutes'),
                     'data' => $data,
                     'backgroundColor' => $colors,
                     'borderColor' => $borderColors,