Migrate backend to Porto architecture and fix minor bugs

- Fully transitioned the backend to the Porto architectural pattern
- Improved code organization and maintainability
- Fixed minor bugs and inconsistencies

app/Containers/Widget/UI/API/Controllers/ClientWidgetSliderController.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Containers\Widget\UI\API\Controllers;
+
+use App\Containers\Widget\Models\Slider;
+use App\Ship\Controllers\Controller;
+use Illuminate\Support\Facades\Cache;
+
+class ClientWidgetSliderController extends Controller
+{
+    public function show(string $slug): ?object
+    {
+        $cacheKey = 'slider_' . $slug;
+
+        return Cache::remember($cacheKey, now()->addHour(), function () use ($slug) {
+            $slider = Slider::query()
+                ->where('slug', $slug)
+                ->where('is_active', true)
+                ->with(['slides' => function($query) {
+                    $query->where('is_active', true);
+                }])
+                ->firstOrFail();
+
+            return $slider ?: null;
+        });
+    }
+}