Add reviews, search autocomplete, SEO meta/schema, user lists

- Review system: ReviewController (store/update/destroy), ReviewPolicy, Review model boot() hooks, review form with Alpine.js (spoiler toggle, edit/delete UX)
- Search autocomplete: Alpine.js searchWidget in nav with 300ms debounce, keyboard navigation, 6-result dropdown
- SEO: og:image, twitter:card in layout; og sections + Schema.org VideoGame JSON-LD on game show pages
- Custom lists: UserList/UserListGame models, ListController, ListPolicy, lists index/show views, Add-to-List button on game pages

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/Models/Review.php

@@ -1,13 +1,29 @@
 <?php
+
 namespace App\Models;
+
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 
 class Review extends Model
 {
-    protected $fillable = ['user_id','game_id','rating','body','has_spoilers','helpful_count'];
-    protected $casts = ['has_spoilers'=>'boolean'];
+    protected $fillable = ['user_id', 'game_id', 'body', 'rating', 'has_spoilers'];
+
+    protected $casts = ['has_spoilers' => 'boolean'];
+
+    protected static function boot(): void
+    {
+        parent::boot();
+
+        static::saved(function (Review $review) {
+            $review->game->recalculateRating();
+        });
+
+        static::deleted(function (Review $review) {
+            $review->game->recalculateRating();
+        });
+    }
 
     public function user(): BelongsTo { return $this->belongsTo(User::class); }
     public function game(): BelongsTo { return $this->belongsTo(Game::class); }