feat: Add tenant code to value changes; implement PurchaseController and related services for tenant-specific purchase management

app/Domains/Logging/Models/Concerns/LogsValueChanges.php

@@ -11,6 +11,8 @@ use LogicException;
 
 trait LogsValueChanges
 {
+    abstract protected function valueChangeTenantCode(): string;
+
     public static function bootLogsValueChanges(): void
     {
         static::updated(function (Model $model): void {
@@ -30,6 +32,7 @@ trait LogsValueChanges
 
             foreach ($changedAttributes as $attribute) {
                 $model->valueChanges()->create([
+                    'tenant_code' => $model->valueChangeTenantCode(),
                     'attribute' => $attribute,
                     'old_value' => $model->getRawOriginal($attribute),
                     'new_value' => $model->getAttributes()[$attribute] ?? null,