fix payement link and gallery image

tests/test_views.py

@@ -490,7 +490,10 @@ def test_ticket_polling_javascript_keeps_background_sync_and_recovers_reliably()
     assert "conversationEnd?.scrollIntoView" not in script
     assert "scroller.scrollTo({top,behavior:'smooth'})" in script
     assert "data-message-id" in Path("templates/tickets/_messages.html").read_text(encoding="utf-8")
-    assert "acknowledgeVisibleMessages" in script and "document.visibilityState!=='visible'" in script
+    read_script=Path('static/js/conversation-read.js').read_text(encoding='utf-8')
+    assert "document.visibilityState!=='visible'" in read_script and 'getBoundingClientRect' in read_script and 'elementFromPoint' in read_script
+    for template in ('customer_detail.html', 'staff_detail.html'):
+        assert "{% static 'js/conversation-read.js' %}?v={{ static_asset_version }}" in Path('templates/tickets',template).read_text(encoding='utf-8')
     source_css=Path("static/src/tailwind.css").read_text(encoding="utf-8")
     assert ".staff-ticket-workspace .composer.is-collapsed{position:fixed" not in source_css
     assert ".staff-ticket-workspace .composer:not(.is-collapsed){position:fixed" not in source_css