🔇(backend) silence noisy request summary info logs

The request summary info logs were spamming the log stream, making
around 46% of the total volume, without carrying any exploitable
information.

Silence them so the remaining logs are easier to explore and cheaper
to store; roughly halves the overall log volume.

CHANGELOG.md

@@ -8,6 +8,15 @@ and this project adheres to
 
 ## [Unreleased]
 
+### Fixed
+
+- 🔒️(backend) enforce display name setting on rename API
+
+### Changed
+
+- 🔇(backend) silence expected 401 warnings on /me
+- 🔇(backend) silence noisy request summary info logs
+
 ## [1.31.0] - 2026-09-08
 
 ### Added

src/backend/core/api/viewsets.py

@@ -909,6 +909,15 @@ class RoomViewSet(
         """Rename the current participant in the room."""
         room = self.get_object()
 
+        if (
+            not settings.AUTHENTICATED_PARTICIPANTS_CAN_EDIT_DISPLAY_NAME
+            and request.user.is_authenticated
+        ):
+            return drf_response.Response(
+                {"error": "Authenticated participants cannot edit their display name"},
+                status=drf_status.HTTP_403_FORBIDDEN,
+            )
+
         serializer = serializers.RenameParticipantSerializer(data=request.data)
         serializer.is_valid(raise_exception=True)
 

src/backend/core/logging_filters.py

@@ -0,0 +1,25 @@
+"""Logging filters for the core application."""
+
+import logging
+
+from django.conf import settings
+
+
+class SilenceExpected401(logging.Filter):
+    """Drop the expected 401 from anonymous hits on the /me endpoint.
+
+    The frontend probes `/users/me/` to check authentication; a 401 for
+    anonymous users is normal, not a warning worth logging.
+    """
+
+    def filter(self, record):
+        """Return False for a 401 on a silenced path, True otherwise."""
+        if getattr(record, "status_code", None) != 401:
+            return True
+
+        request = getattr(record, "request", None)
+        path = getattr(request, "path", None)
+        if not path:
+            return True
+
+        return path not in settings.LOGGING_SILENCED_401_PATHS

src/backend/core/tests/rooms/test_api_rooms_rename_toggle.py

@@ -372,6 +372,67 @@ def test_rename_participant_unexpected_twirp_error(mock_livekit_client, room, to
     mock_livekit_client.aclose.assert_called_once()
 
 
+@pytest.mark.parametrize("name", ["John Doe", "Admin", "Room Owner"])
+def test_rename_participant_forbidden_when_display_name_edit_disabled(
+    mock_livekit_client, settings, room, token, name
+):
+    """
+    Test rename is rejected for authenticated users when the self-hoster
+    disables AUTHENTICATED_PARTICIPANTS_CAN_EDIT_DISPLAY_NAME.
+    """
+    settings.AUTHENTICATED_PARTICIPANTS_CAN_EDIT_DISPLAY_NAME = False
+
+    client = APIClient()
+    url = reverse("rooms-rename", kwargs={"pk": room.id})
+    response = client.post(
+        url, {"name": name}, format="json", HTTP_AUTHORIZATION=f"Bearer {token}"
+    )
+
+    assert response.status_code == status.HTTP_403_FORBIDDEN
+    assert response.data == {
+        "error": "Authenticated participants cannot edit their display name"
+    }
+    mock_livekit_client.room.update_participant.assert_not_called()
+
+
+def test_rename_participant_allowed_when_display_name_edit_enabled(
+    mock_livekit_client, settings, room, token
+):
+    """Test rename still works for authenticated users when the setting is enabled."""
+    settings.AUTHENTICATED_PARTICIPANTS_CAN_EDIT_DISPLAY_NAME = True
+
+    client = APIClient()
+    url = reverse("rooms-rename", kwargs={"pk": room.id})
+    response = client.post(
+        url, {"name": "John Doe"}, format="json", HTTP_AUTHORIZATION=f"Bearer {token}"
+    )
+
+    assert response.status_code == status.HTTP_200_OK
+    mock_livekit_client.room.update_participant.assert_called_once()
+
+
+def test_rename_participant_anonymous_allowed_when_display_name_edit_disabled(
+    mock_livekit_client, settings, room, anonymous_token
+):
+    """
+    Test the setting only restricts authenticated users: anonymous participants
+    have no account name to fall back on and can still rename themselves.
+    """
+    settings.AUTHENTICATED_PARTICIPANTS_CAN_EDIT_DISPLAY_NAME = False
+
+    client = APIClient()
+    url = reverse("rooms-rename", kwargs={"pk": room.id})
+    response = client.post(
+        url,
+        {"name": "Guest User"},
+        format="json",
+        HTTP_AUTHORIZATION=f"Bearer {anonymous_token}",
+    )
+
+    assert response.status_code == status.HTTP_200_OK
+    mock_livekit_client.room.update_participant.assert_called_once()
+
+
 def test_rename_participant_success_anonymous(
     mock_livekit_client, room, anonymous_token
 ):

src/backend/meet/settings.py

@@ -1110,6 +1110,12 @@ class Base(Configuration):
         environ_prefix=None,
     )
 
+    LOGGING_SILENCED_401_PATHS = values.ListValue(
+        default=["/api/v1.0/users/me/"],
+        environ_name="LOGGING_SILENCED_401_PATHS",
+        environ_prefix=None,
+    )
+
     # Logging
     # We want to make it easy to log to console but by default we log production
     # to Sentry and don't want to log to console.
@@ -1122,10 +1128,16 @@ class Base(Configuration):
                 "style": "{",
             },
         },
+        "filters": {
+            "silence_expected_401": {
+                "()": "core.logging_filters.SilenceExpected401",
+            },
+        },
         "handlers": {
             "console": {
                 "class": "logging.StreamHandler",
                 "formatter": "simple",
+                "filters": ["silence_expected_401"],
             },
         },
         # Override root logger to send it to console
@@ -1136,6 +1148,13 @@ class Base(Configuration):
             ),
         },
         "loggers": {
+            "request.summary": {
+                "level": values.Value(
+                    "WARNING",
+                    environ_name="LOGGING_LEVEL_REQUEST_SUMMARY",
+                    environ_prefix="",
+                )
+            },
             "core": {
                 "handlers": ["console"],
                 "level": values.Value(