feat: harden tenant settings and import pipeline

app/Models/PurchaseHistory.php

@@ -2,36 +2,31 @@
 
 namespace App\Models;
 
+use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
 class PurchaseHistory extends Model
 {
+    use HasFactory;
+
     protected $table = 'purchase_history';
-    
+    public $timestamps = false;
+    public $incrementing = false;
+    protected $keyType = 'string';
+
     protected $guarded = [];
-    
-    protected $fillable = [
-        'id',
-        'tenant_id',
-        'package_id',
-        'credits_added',
-        'price',
-        'currency',
-        'platform',
-        'transaction_id',
-        'purchased_at',
-    ];
-    
+
     protected $casts = [
         'credits_added' => 'integer',
         'price' => 'decimal:2',
         'purchased_at' => 'datetime',
         'created_at' => 'datetime',
     ];
-    
+
     public function tenant(): BelongsTo
     {
         return $this->belongsTo(Tenant::class);
     }
 }
+