Clear only the submitted company from multi-company carts and label all companies.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/carts/carts.service.ts

@@ -198,12 +198,14 @@ export class CartsService {
       companyName: string;
     }>;
   }) {
-    const companyName = cart.items[0]?.companyName;
+    const companyNames = [
+      ...new Set(cart.items.map((item) => item.companyName).filter(Boolean)),
+    ];
     return {
       id: cart.id,
       userId: cart.userId,
       companyId: cart.companyId ?? cart.items[0]?.companyId,
-      companyName: companyName ?? '',
+      companyName: companyNames.join('، '),
       notes: cart.notes ?? undefined,
       items: cart.items.map((item) => ({
         id: item.id,

src/orders/orders.service.ts

@@ -254,7 +254,14 @@ export class OrdersService {
         const cart = await tx.cart.findFirst({ where: { userId } });
         if (cart) {
           await tx.cartItem.deleteMany({
-            where: { cartId: cart.id, companyId: company.id },
+            where: { cartId: cart.id, companyId: orderCompany.id },
+          });
+          const remaining = await tx.cartItem.findFirst({
+            where: { cartId: cart.id },
+          });
+          await tx.cart.update({
+            where: { id: cart.id },
+            data: { companyId: remaining?.companyId ?? null },
           });
         }