🔇(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

@@ -12,6 +12,11 @@ and this project adheres to
 
 - 🔒️(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/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/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(