refactor(sales): replace service with command and action pattern

- Replace SaleService with CreateSaleCommand and CreateSaleAction for better separation of concerns
- Move sale creation logic into dedicated command class following command pattern
- Update CreateSale.php to use new action instead of direct service call
- Wrap sale creation in database transaction for data consistency

app/Actions/Sales/CreateSaleAction.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Actions\Sales;
+
+use App\Commands\Sales\CreateSaleCommand;
+use App\Models\Sale;
+
+class CreateSaleAction
+{
+    /**
+     * Create a new class instance.
+     */
+    public function __construct(private CreateSaleCommand $createSaleCommand)
+    {
+        //
+    }
+
+    public function __invoke(array $data): Sale
+    {
+        return $this->createSaleCommand->execute($data);
+    }
+}

app/Commands/Sales/CreateSaleCommand.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Commands\Sales;
+
+use App\Commands\Command;
+use App\DataObjects\CreateSaleDTO;
+use App\Models\Sale;
+use Illuminate\Support\Facades\Auth;
+use Illuminate\Support\Facades\DB;
+
+class CreateSaleCommand implements Command
+{
+    public function execute(array $data): Sale
+    {
+        return DB::transaction(function () use ($data, &$sale) {
+            $tData = new CreateSaleDTO(
+                reference_number: $data['current_series'],
+                happened_on: \Carbon\Carbon::parse($data['happened_on']),
+                branch_id: $data['branch_id'],
+                user_id: Auth::user()->id,
+            );
+
+            return Sale::create($tData->toArray());
+        });
+
+    }
+}

app/Filament/Resources/SaleResource/Pages/CreateSale.php

@@ -2,6 +2,7 @@
 
 namespace App\Filament\Resources\SaleResource\Pages;
 
+use App\Actions\Sales\CreateSaleAction;
 use App\Actions\Transactions\CreateTransactionAction;
 use App\DataObjects\CreateTransactionDTO;
 use App\Filament\Resources\ClientResource;
@@ -83,7 +84,7 @@ class CreateSale extends CreateRecord
     {
         try {
             DB::beginTransaction();
-            $record = app(SaleService::class)->create($this->getFormDataMutation($data));
+            $record = app(CreateSaleAction::class)($this->getFormDataMutation($data));
             $branch = $record->branch;
 
             foreach ($transactions as $transaction) {

app/Services/Sales/SaleService.php

@@ -1,31 +0,0 @@
-<?php
-
-namespace App\Services\Sales;
-
-use App\DataObjects\CreateSaleDTO;
-use App\Models\Sale;
-use Carbon\Carbon;
-use Illuminate\Support\Facades\Auth;
-
-class SaleService
-{
-    /**
-     * Create a new class instance.
-     */
-    public function __construct()
-    {
-        //
-    }
-
-    public function create(array $data): Sale
-    {
-        
-        $tData = new CreateSaleDTO(
-            reference_number: $data['current_series'], 
-            happened_on: Carbon::parse($data['happened_on']),
-            branch_id: $data['branch_id'],
-            user_id: Auth::user()->id,
-        );
-        return Sale::create($tData->toArray());
-    }
-}