FlexusClient missing use_http_on_behalf causes cloudtool crashes #274
Description
Observed in staging on 2026-03-31. Multiple services crash with AttributeError: 'FlexusClient' object has no attribute 'use_http_on_behalf' from flexus_client_kit/ckit_cloudtool.py:380 and ckit_edoc.py:48. Current FlexusClient implementation in ckit_client.py exposes use_http() and use_ws(), but no use_http_on_behalf(). Affected pod observed: pod-operator-deployment-6c94667b4c-89kf5 in namespace flexus; related services in logs show repeated crash loops. Please restore the missing API or update callers to the supported method.