.

cards/views.py

@@ -241,6 +241,37 @@ def background_delete(request, pk):
     return redirect('cards:backgrounds')
 
 
+def background_edit(request, pk):
+    """Edit an existing BackgroundImage's metadata (title, image, is_active).
+
+    Designed to work with HTMX: GET returns a small edit form fragment which
+    replaces the background card. POST saves and returns the updated
+    backgrounds list fragment so the UI stays in sync.
+    """
+    bg = get_object_or_404(BackgroundImage, pk=pk)
+    if request.method == 'POST':
+        form = BackgroundImageForm(request.POST, request.FILES, instance=bg)
+        if form.is_valid():
+            bg = form.save()
+            # If marked active, unset others
+            if bg.is_active:
+                BackgroundImage.objects.exclude(pk=bg.pk).update(is_active=False)
+            if is_htmx(request):
+                list_html = render_to_string('cards/_backgrounds_list.html', {'backgrounds': BackgroundImage.objects.all(), 'form': BackgroundImageForm()}, request=request)
+                return HttpResponse(list_html)
+            return redirect('cards:backgrounds')
+        else:
+            if is_htmx(request):
+                form_html = render_to_string('cards/_background_title_form.html', {'bg': bg, 'form': form}, request=request)
+                return HttpResponse(form_html)
+            return render(request, 'cards/backgrounds_list.html', {'backgrounds': BackgroundImage.objects.all(), 'form': form})
+    else:
+        form = BackgroundImageForm(instance=bg)
+        if is_htmx(request):
+            return render(request, 'cards/_background_title_form.html', {'bg': bg, 'form': form})
+        return render(request, 'cards/backgrounds_list.html', {'backgrounds': BackgroundImage.objects.all(), 'form': form})
+
+
 def preview_card(request, pk):
     """Render a full preview of a card. HTMX loads the modal fragment into #modal-root."""
     card = get_object_or_404(Dinosaur, pk=pk)