refactor: improve score distribution display and enhance HTMX handling in exam views

generic/templates/generic/partials/_exam_scores_stats.html

@@ -63,9 +63,8 @@
 
 {% if plot %}
     <div class="card bg-dark text-light border-secondary mb-4 shadow-sm">
-        <div class="card-header border-secondary d-flex justify-content-between align-items-center">
+        <div class="card-header border-secondary">
             <h6 class="mb-0">Distribution of Scores</h6>
-            <span class="badge bg-secondary">low scores (&lt;20% max) excluded from statistics</span>
         </div>
         <div class="card-body p-0">
             <div id="stats-plot-wrapper">

generic/views.py

@@ -4066,10 +4066,6 @@ class ExamViews(View, LoginRequiredMixin):
             pass_rate = 0.0
 
             if len(user_scores_list) >= 1:
-                lower_score_bound = max_score / 5
-                bounded_scores = [i for i in user_scores_list if i > lower_score_bound]
-                if bounded_scores:
-                    user_scores_list = bounded_scores
 
                 mean = round(statistics.mean(user_scores_list), 2)
                 median = round(statistics.median(user_scores_list), 2)
@@ -4248,12 +4244,14 @@ class ExamViews(View, LoginRequiredMixin):
         exam.save()
 
         from django.urls import reverse
-        from django.http import HttpResponseRedirect
         url = reverse(f"{self.app_name}:exam_scores_all", kwargs={"pk": pk})
-        response = HttpResponseRedirect(url)
         if request.htmx:
-            response["HX-Redirect"] = url
-        return response
+            # Return 200 OK with HX-Redirect header to trigger client-side redirect in HTMX
+            return HttpResponse("", headers={"HX-Redirect": url})
+        
+        # Standard non-HTMX redirect
+        from django.http import HttpResponseRedirect
+        return HttpResponseRedirect(url)
 
     def toggle_candidate_stats_exclusion(self, request, pk):
         exam = get_object_or_404(self.Exam, pk=pk)

rad/settings.py

@@ -417,6 +417,21 @@ CHANNEL_LAYERS = {
     },
 }
 
+def show_toolbar(request):
+    if request.headers.get("HX-Request") or getattr(request, "htmx", False):
+        return False
+    if request.headers.get("x-requested-with") == "XMLHttpRequest":
+        return False
+    try:
+        from debug_toolbar.middleware import show_toolbar as default_show_toolbar
+        return default_show_toolbar(request)
+    except ImportError:
+        return False
+
+DEBUG_TOOLBAR_CONFIG = {
+    "SHOW_TOOLBAR_CALLBACK": "rad.settings.show_toolbar",
+}
+
 try:
     from .settings_local import *
 except ImportError as e: