update saleinvoice single and create return from sale form, update agent.md file,

src/app/domains/pos/modules/shop/components/order/order-section.component.html

@@ -42,13 +42,7 @@
   <div class="sticky bottom-0 flex flex-col gap-4 py-2">
     <p-card class="border-surface-border border">
       <div class="flex flex-col gap-4">
-        <app-datepicker
-          label="تاریخ صورت‌حساب‌"
-          alignment="horizontal"
-          [min]="invoiceMinDate"
-          [max]="invoiceMaxDate"
-          [control]="invoiceDate"
-          (valueChange)="changeDate($event)" />
+        <field-invoice-date [control]="invoiceDate" alignment="horizontal" (onChangeDate)="changeDate($event)" />
         <div class="flex shrink-0 items-center justify-between gap-2">
           <app-key-value label="مشتری" [value]="customerNameToShow()" />
           <button pButton outlined icon="pi pi-pencil" size="small" (click)="openCustomerDialog()"></button>

src/app/domains/pos/modules/shop/components/order/order-section.component.ts

@@ -1,8 +1,7 @@
 // import { CustomersSelectComponent } from '@/modules/customers/components/select/select.component';
 // import { ICustomerResponse } from '@/modules/customers/models';
 import { KeyValueComponent } from '@/shared/components';
-import { MiniMonthlyCalendarComponent } from '@/uikit';
-import { formatGregorian, gregorianAddUnit } from '@/utils';
+import { FieldInvoiceDateComponent } from '@/shared/components/fields/invoice_date.component';
 import {
   ChangeDetectionStrategy,
   Component,
@@ -35,7 +34,8 @@ import { POSOrderPriceInfoCardComponent } from './price-info-card.component';
     PosOrderCustomerDialogComponent,
     KeyValueComponent,
     Card,
-    MiniMonthlyCalendarComponent,
+
+    FieldInvoiceDateComponent,
   ],
 })
 export class PosOrderSectionComponent {
@@ -46,8 +46,6 @@ export class PosOrderSectionComponent {
   placeholderImage = images.placeholders.default;
 
   isVisibleCustomerForm = signal(false);
-  invoiceMinDate = formatGregorian(gregorianAddUnit(new Date(), -7, 'days'));
-  invoiceMaxDate = formatGregorian(new Date());
 
   invoiceDate = new FormControl(this.store.invoiceDate());