working UGC content upload with multi-upload support

nonpacks/templates/library/project_detail.html

@@ -135,6 +135,29 @@
             document.getElementById('tab-' + btn.dataset.tab).classList.add('active');
         });
     });
+
+    // Gallery deletion without a page reload, behind a confirmation dialog.
+    document.querySelectorAll('.gallery-delete').forEach(link => {
+        link.addEventListener('click', (e) => {
+            e.preventDefault();
+            if (!confirm('Delete this media? This cannot be undone.')) return;
+            const xhr = new XMLHttpRequest();
+            xhr.open('POST', link.getAttribute('href'));
+            xhr.setRequestHeader('X-CSRFToken', getCookie('csrftoken'));
+            xhr.onload = function () {
+                if (xhr.status === 200) {
+                    const figure = link.closest('figure.gallery-item');
+                    if (figure) figure.remove();
+                } else {
+                    alert('Could not delete media.');
+                }
+            };
+            xhr.onerror = function () {
+                alert('Network error while deleting media.');
+            };
+            xhr.send();
+        });
+    });
 })();
 </script>
 {% endblock %}