fix : Category, Product 관련 테이블 정리 (Models, DB, seeder)

app/Models/Commons/CategoryLog.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace App\Models\Commons;
+
+use App\Traits\BelongsToTenant;
+use App\Traits\ModelTrait;
+use Illuminate\Database\Eloquent\Model;
+
+class CategoryLog extends Model
+{
+    use BelongsToTenant, ModelTrait;
+
+    protected $table = 'category_logs';
+    public $timestamps = false; // changed_at 컬럼 단일 사용
+
+    protected $fillable = [
+        'category_id','tenant_id','action','changed_by','changed_at',
+        'before_json','after_json','remarks',
+    ];
+
+    protected $casts = [
+        'changed_at'  => 'datetime',
+        'before_json' => 'array',
+        'after_json'  => 'array',
+    ];
+
+    public function category()
+    {
+        return $this->belongsTo(Category::class);
+    }
+}