diff --git a/app_new/core/routes/admin.py b/app_new/core/routes/admin.py
index 2cd3993..f8679c5 100644
--- a/app_new/core/routes/admin.py
+++ b/app_new/core/routes/admin.py
@@ -417,13 +417,18 @@ def template_debug():
     """Affiche les doublons et les décisions de nettoyage des templates."""
     files, by_key = _template_inventory()
     selected_filter = request.args.get('filter', 'duplicates')
+    treated = lambda item: item['mark'] and item['mark'].status == 'obsolete'
     if selected_filter == 'obsolete':
         visible_files = [item for item in files if item['mark'] and item['mark'].status == 'obsolete']
+    elif selected_filter == 'identical':
+        visible_files = [item for item in files if not treated(item) and item['duplicate_count'] > 1 and item['comparison'] == 'identique']
+    elif selected_filter == 'divergent':
+        visible_files = [item for item in files if not treated(item) and item['duplicate_count'] > 1 and item['comparison'] == 'divergent']
     elif selected_filter == 'all':
-        visible_files = files
+        visible_files = [item for item in files if not treated(item)]
     else:
         selected_filter = 'duplicates'
-        visible_files = [item for item in files if item['duplicate_count'] > 1]
+        visible_files = [item for item in files if not treated(item) and item['duplicate_count'] > 1]
     stats = {
         'total': len(files),
         'duplicate_groups': sum(1 for group in by_key.values() if len(group) > 1),
diff --git a/app_new/templates/admin/template_debug.html b/app_new/templates/admin/template_debug.html
index ceea88e..4f864e3 100644
--- a/app_new/templates/admin/template_debug.html
+++ b/app_new/templates/admin/template_debug.html
@@ -43,10 +43,15 @@
     {% endfor %}
   </div>
 
-  <div class="btn-group btn-group-sm mb-3" role="group">
-    <a class="btn {{ 'btn-primary' if selected_filter == 'duplicates' else 'btn-outline-primary' }}" href="{{ url_for('admin.template_debug', filter='duplicates') }}">Doublons</a>
-    <a class="btn {{ 'btn-primary' if selected_filter == 'obsolete' else 'btn-outline-primary' }}" href="{{ url_for('admin.template_debug', filter='obsolete') }}">Obsolètes</a>
-    <a class="btn {{ 'btn-primary' if selected_filter == 'all' else 'btn-outline-primary' }}" href="{{ url_for('admin.template_debug', filter='all') }}">Tous</a>
+  <div class="d-flex flex-wrap gap-2 align-items-center mb-3">
+    <span class="small text-muted">Afficher :</span>
+    <div class="btn-group btn-group-sm" role="group" aria-label="Filtre des templates">
+      <a class="btn {{ 'btn-primary' if selected_filter == 'duplicates' else 'btn-outline-primary' }}" href="{{ url_for('admin.template_debug', filter='duplicates') }}">Doublons actifs</a>
+      <a class="btn {{ 'btn-primary' if selected_filter == 'identical' else 'btn-outline-primary' }}" href="{{ url_for('admin.template_debug', filter='identical') }}">Identiques</a>
+      <a class="btn {{ 'btn-primary' if selected_filter == 'divergent' else 'btn-outline-primary' }}" href="{{ url_for('admin.template_debug', filter='divergent') }}">Divergents</a>
+      <a class="btn {{ 'btn-primary' if selected_filter == 'all' else 'btn-outline-primary' }}" href="{{ url_for('admin.template_debug', filter='all') }}">Tous les actifs</a>
+      <a class="btn {{ 'btn-secondary' if selected_filter == 'obsolete' else 'btn-outline-secondary' }}" href="{{ url_for('admin.template_debug', filter='obsolete') }}">Traités / obsolètes</a>
+    </div>
   </div>
 
   {% if groups %}
diff --git a/app_new/templates/base.html b/app_new/templates/base.html
index 7c4c5f5..ecee441 100644
--- a/app_new/templates/base.html
+++ b/app_new/templates/base.html
@@ -111,25 +111,25 @@
         </a>
 
         <div class="d-flex align-items-center order-lg-last">
-            <!-- Alertes badge -->
+            <!-- Alertes GMAO : alertes métier -->
             {% set unread = stats.alerts_unread if stats is defined else 0 %}
-            {% if unread %}
-            <a href="{{ url_for('dashboard.alerts') }}" class="btn btn-sm btn-outline-light me-2 position-relative">
-                <i class="bi bi-bell"></i>
-                <span class="position-absolute top-0 start-100 translate-middle badge rounded-pill bg-danger" style="font-size:0.6rem;">
+            <a href="{{ url_for('dashboard.alerts') }}" class="btn btn-sm btn-outline-warning me-2 position-relative" title="Alertes GMAO" aria-label="Alertes GMAO">
+                <i class="bi bi-exclamation-triangle-fill"></i>
+                {% if unread %}
+                <span class="position-absolute top-0 start-100 translate-middle badge rounded-pill bg-warning text-dark" style="font-size:0.6rem;">
                     {{ unread }}
                 </span>
+                {% endif %}
             </a>
-            {% endif %}
 
             <!-- Theme toggle -->
             <button class="theme-toggle" id="theme-toggle" title="Basculer le theme">
                 <i class="bi bi-moon-fill" id="theme-icon"></i>
             </button>
 
-            <!-- Notifications -->
-            <a href="/logs/" class="btn btn-sm btn-outline-light me-2 position-relative" title="Notifications">
-                <i class="bi bi-bell"></i>
+            <!-- Notifications système : interprétations et watchdogs -->
+            <a href="/logs/" class="btn btn-sm btn-outline-light me-2 position-relative" title="Notifications système et logs watchdogs" aria-label="Notifications système et logs watchdogs">
+                <i class="bi bi-journal-text"></i>
                 <span class="position-absolute top-0 start-100 translate-middle badge rounded-pill bg-danger" id="notif-count" style="font-size:0.6rem; display:none;">0</span>
             </a>
 
diff --git a/tests/integration/test_intervention_location_and_template_audit.py b/tests/integration/test_intervention_location_and_template_audit.py
index c398f77..2924282 100644
--- a/tests/integration/test_intervention_location_and_template_audit.py
+++ b/tests/integration/test_intervention_location_and_template_audit.py
@@ -7,6 +7,8 @@ def test_template_audit_can_mark_and_restore_without_deleting(authenticated_clie
     assert 'Audit des templates' in response.get_data(as_text=True)
     assert 'Architecture cible des templates' in response.get_data(as_text=True)
     assert 'app_new/chatbot/templates/chatbot/index.html' in response.get_data(as_text=True)
+    assert 'Identiques' in response.get_data(as_text=True)
+    assert 'Divergents' in response.get_data(as_text=True)
 
     response = authenticated_client.get('/admin/debug/templates/preview?path=templates%2Fadmin%2Ftemplate_debug.html')
     assert response.status_code == 200