add payment_link and banks

static/js/chaharsu/bank-selection.js

@@ -0,0 +1,25 @@
+/* Selection changes presentation only; permissions and updates remain server-side. */
+(() => {
+  'use strict';
+  const form = document.querySelector('[data-bank-selection]');
+  if (!form) return;
+  const boxes = Array.from(form.querySelectorAll('input[name="accounts"]'));
+  const all = form.querySelector('[data-select-all]');
+  const count = form.querySelector('[data-selection-count]');
+  const submit = form.querySelector('[data-bulk-submit]');
+  if (!all || !count || !submit) return;
+  const update = () => {
+    const selected = boxes.filter(box => box.checked).length;
+    all.checked = selected > 0 && selected === boxes.length;
+    all.indeterminate = selected > 0 && selected < boxes.length;
+    count.textContent = selected ? `${selected.toLocaleString('fa-IR')} حساب انتخاب شده` : 'حساب‌های موردنظر را انتخاب کنید.';
+    submit.disabled = selected === 0;
+  };
+  all.addEventListener('change', () => {
+    boxes.forEach(box => { box.checked = all.checked; });
+    update();
+  });
+  boxes.forEach(box => box.addEventListener('change', update));
+  window.addEventListener('pageshow', update);
+  update();
+})();