fix(tahesab): label invoice timestamp as print date

Rename تاریخ ایجاد to تاریخ چاپ on the asnad invoice preview and PDF.

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

apps/web/src/components/person-assets/TahesabInvoicePreviewModal.vue

@@ -225,7 +225,7 @@ function printPdf() {
 
         <div class="invoice-balance">
           <div class="ib-when">
-            <span class="ib-k">تاریخ ایجاد:</span>
+            <span class="ib-k">تاریخ چاپ:</span>
             {{ generatedAtLabel }}
           </div>
           <div class="ib-label">مانده این فاکتور:</div>

apps/web/src/lib/tahesab-invoice-pdf.ts

@@ -651,7 +651,7 @@ export function printTahesabInvoicePdf(opts: {
     </tfoot>
   </table>
   <div class="invoice-balance">
-    <div class="ib-when"><span class="ib-k">تاریخ ایجاد:</span> ${escapeHtml(generatedAt)}</div>
+    <div class="ib-when"><span class="ib-k">تاریخ چاپ:</span> ${escapeHtml(generatedAt)}</div>
     <div class="ib-label">مانده این فاکتور:</div>
     <div class="ib-cell">
       <span class="ib-k">مانده وزنی:</span>