fix: patch SessionDB methods for session_search user_id compat

__init__.py

@@ -237,6 +237,56 @@ def _apply_honcho_patch():
         logger.warning("identity: failed to patch Honcho init: %s", exc)
 
 
+# ── SessionDB patch (version compat: user_id kwarg) ──────────────────────
+
+_session_db_patched = False
+
+
+def _patch_session_db() -> None:
+    """Monkey-patch SessionDB methods to accept (and ignore) the ``user_id``
+    kwarg that the built-in ``session_search`` tool passes but the upstream
+    backend no longer supports. Same zero-fork pattern as the Honcho patch."""
+    global _session_db_patched
+    if _session_db_patched:
+        return
+
+    try:
+        from hermes_state import SessionDB
+    except ImportError as exc:
+        logger.warning("identity: hermes_state not importable (%s), skipping SessionDB patch", exc)
+        return
+    except Exception as exc:
+        logger.warning("identity: failed to import SessionDB: %s", exc)
+        return
+
+    # search_messages
+    orig_search = SessionDB.search_messages
+    if orig_search is None:
+        logger.warning("identity: SessionDB.search_messages not found")
+        return
+
+    def _patched_search(self, *args, **kwargs):
+        kwargs.pop("user_id", None)
+        return orig_search(self, *args, **kwargs)
+
+    SessionDB.search_messages = _patched_search
+
+    # list_sessions_rich
+    orig_list = SessionDB.list_sessions_rich
+    if orig_list is None:
+        logger.warning("identity: SessionDB.list_sessions_rich not found")
+        return
+
+    def _patched_list(self, *args, **kwargs):
+        kwargs.pop("user_id", None)
+        return orig_list(self, *args, **kwargs)
+
+    SessionDB.list_sessions_rich = _patched_list
+
+    _session_db_patched = True
+    logger.info("identity: patched SessionDB methods ✓")
+
+
 # ── Hooks ───────────────────────────────────────────────────────────────────
 
 
@@ -382,6 +432,7 @@ def register(ctx: Any) -> None:
     # Apply the runtime monkey-patch to Honcho's session init
     # NO files modified, NO fork needed — pure Python at import time
     _apply_honcho_patch()
+    _patch_session_db()
 
     # Register hooks
     ctx.register_hook("pre_gateway_dispatch", _pre_gateway_dispatch)