Use MicroKernelTrait to bootstrap application. Rewrote routes, controllers and structure of application a bit. Including use of twig.

src/Models/Product.php

@@ -18,7 +18,7 @@ use Illuminate\Database\Eloquent\Relations\HasOne;
  * @property string $variantCode
  * @property string $modelCode
  * @property string $url
- * @property boolean $starred
+ * @property int $starred
  */
 class Product extends Model
 {
@@ -30,10 +30,16 @@ class Product extends Model
         return $this->hasMany(Price::class);
     }
 
+    public function isStarred(): bool
+    {
+        return (bool) $this->starred;
+    }
+
     public function currentPrice(): HasOne
     {
         return $this->hasOne(Price::class)->latestOfMany('created_at');
     }
+
     public function stock(): HasMany
     {
         return $this->hasMany(Stock::class);
@@ -42,6 +48,7 @@ class Product extends Model
     public function toggleStarred(): self
     {
         $this->starred = !$this->starred;
+
         return $this;
     }