fix a few multisync issues

atlas/templates/atlas/multiuser_session_detail.html

@@ -58,7 +58,7 @@
                         <span class="input-group-text bg-secondary text-white border-secondary">
                             <i class="bi bi-search"></i>
                         </span>
-                        <input type="text" id="multiuserCaseSearch" class="form-control bg-dark text-white border-secondary" 
+                        <input type="text" id="multiuserCaseSearch" name="q" class="form-control bg-dark text-white border-secondary" 
                                placeholder="Search cases to load..."
                                hx-get="{% url 'atlas:multiuser_search_cases' session_id=session.id %}"
                                hx-trigger="input delay:300ms, focus"
@@ -161,6 +161,7 @@
             container.scrollTop = container.scrollHeight;
         }
     }
+    window.logDebug = logDebug;
 
     function clearDebugLogs() {
         const container = document.getElementById("syncDebugLogsContainer");
@@ -264,12 +265,16 @@
                     logDebug("Session WS event received (type=" + data.type + ")", data);
                     
                     if (data.type === 'change_case') {
+                        {% if not is_manager %}
                         logDebug("Session host changed case to " + data.case_id + ". Fetching new case via HTMX...");
                         // Fetch new case content via HTMX
                         htmx.ajax('GET', "{% url 'atlas:multiuser_case_content_partial' session_id=session.id %}", {
                             target: "#multiuser-case-container",
                             swap: "innerHTML"
                         });
+                        {% else %}
+                        logDebug("Host ignored change_case broadcast to avoid double-swap");
+                        {% endif %}
                     } else if (data.type === 'room_status') {
                         // Update user count
                         const userCount = Object.keys(data.users || {}).length;

atlas/tests/test_multiuser.py

@@ -129,8 +129,23 @@ def test_multiuser_load_case_action(client, make_case):
     
     # Manager loads case
     client.force_login(manager)
-    response = client.post(reverse("atlas:multiuser_load_case", kwargs={"session_id": session.id}), data={"case_id": case.pk})
-    assert response.status_code == 200
+    from unittest.mock import patch, MagicMock, AsyncMock
+    with patch("channels.layers.get_channel_layer") as mock_get_channel_layer:
+        mock_layer = MagicMock()
+        mock_layer.group_send = AsyncMock()
+        mock_get_channel_layer.return_value = mock_layer
+        
+        response = client.post(reverse("atlas:multiuser_load_case", kwargs={"session_id": session.id}), data={"case_id": case.pk})
+        assert response.status_code == 200
+        
+        # Verify Channels group_send was called to notify the group about the case change
+        mock_layer.group_send.assert_called_once_with(
+            f"multiuser_{session.id}",
+            {
+                "type": "change_case",
+                "case_id": case.id
+            }
+        )
     
     session.refresh_from_db()
     assert session.active_case == case