feat: add history_length and min_cleanup_interval configurables for ystore cleanup control

Author: Darshan808

projects/jupyter-server-ydoc/jupyter_server_ydoc/stores.py

@@ -30,3 +30,18 @@ class SQLiteYStore(LoggingConfigurable, _SQLiteYStore, metaclass=SQLiteYStoreMet
         help="""The document time-to-live in seconds. Defaults to None (document history is never
         cleared).""",
     )
+
+    history_length = Int(
+        None,
+        allow_none=True,
+        config=True,
+        help="""The maximum age (in seconds) of document history to retain.
+                    Entries older than this window are automatically pruned.
+                    Defaults to None (history is never cleared).""",
+    )
+
+    min_cleanup_interval = Int(
+        60,
+        config=True,
+        help="""Minimum interval in seconds between automatic cleanup operations. Defaults to 60 seconds.""",
+    )