feat(production): 優化生產單 BOM 原物料選取邏輯，支援商品 -> 倉庫 -> 批號連動與 API 分佈查詢

app/Modules/Inventory/Services/GoodsReceiptService.php

@@ -90,8 +90,8 @@ class GoodsReceiptService
 
     private function generateCode(string $date)
     {
-        // Format: GR + YYYYMMDD + NNN
-        $prefix = 'GR' . date('Ymd', strtotime($date));
+        // Format: GR-YYYYMMDD-NN
+        $prefix = 'GR-' . date('Ymd', strtotime($date)) . '-';
         
         $last = GoodsReceipt::where('code', 'like', $prefix . '%')
             ->orderBy('id', 'desc')
@@ -99,11 +99,11 @@ class GoodsReceiptService
             ->first();
 
         if ($last) {
-            $seq = intval(substr($last->code, -3)) + 1;
+            $seq = intval(substr($last->code, -2)) + 1;
         } else {
             $seq = 1;
         }
 
-        return $prefix . str_pad($seq, 3, '0', STR_PAD_LEFT);
+        return $prefix . str_pad($seq, 2, '0', STR_PAD_LEFT);
     }
 }