docs: bifurcate documentation into user and admin sections (#38196)

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

docs/admin_docs/configuration/event-logging.mdx

@@ -0,0 +1,62 @@
+---
+title: Event Logging
+sidebar_position: 9
+version: 1
+---
+
+# Logging
+
+## Event Logging
+
+Superset by default logs special action events in its internal database (DBEventLogger). These logs can be accessed
+on the UI by navigating to **Security > Action Log**. You can freely customize these logs by
+implementing your own event log class.
+**When custom log class is enabled DBEventLogger is disabled and logs
+stop being populated in UI logs view.**
+To achieve both, custom log class should extend built-in DBEventLogger log class.
+
+Here's an example of a simple JSON-to-stdout class:
+
+```python
+    def log(self, user_id, action, *args, **kwargs):
+        records = kwargs.get('records', list())
+        dashboard_id = kwargs.get('dashboard_id')
+        slice_id = kwargs.get('slice_id')
+        duration_ms = kwargs.get('duration_ms')
+        referrer = kwargs.get('referrer')
+
+        for record in records:
+            log = dict(
+                action=action,
+                json=record,
+                dashboard_id=dashboard_id,
+                slice_id=slice_id,
+                duration_ms=duration_ms,
+                referrer=referrer,
+                user_id=user_id
+            )
+            print(json.dumps(log))
+```
+
+End by updating your config to pass in an instance of the logger you want to use:
+
+```
+EVENT_LOGGER = JSONStdOutEventLogger()
+```
+
+## StatsD Logging
+
+Superset can be configured to log events to [StatsD](https://github.com/statsd/statsd)
+if desired. Most endpoints hit are logged as
+well as key events like query start and end in SQL Lab.
+
+To setup StatsD logging, it’s a matter of configuring the logger in your `superset_config.py`.
+If not already present, you need to ensure that the `statsd`-package is installed in Superset's python environment.
+
+```python
+from superset.stats_logger import StatsdStatsLogger
+STATS_LOGGER = StatsdStatsLogger(host='localhost', port=8125, prefix='superset')
+```
+
+Note that it’s also possible to implement your own logger by deriving
+`superset.stats_logger.BaseStatsLogger`.