activate_custom_endpoint copies the endpoint's base_url and api_key onto
cfg["model"]. delete_custom_endpoint pops the providers entry and saves —
it never touches that mirror.
So deleting the endpoint the agent is currently using leaves both behind:
DELETE /api/providers/custom-endpoints/acme -> 200
providers entry gone : True
model.api_key : sk-CUSTOM-ENDPOINT-SECRET
model.base_url : https://llm.acme.corp/v1
Two consequences, both silent:
* The agent keeps authenticating to the deleted host with the deleted key.
model.api_key outranks the environment at client construction, so this
also shadows whatever the operator configures next — the persistent-401
shape credential_lifecycle.py documents as #62269.
* A credential the operator just removed through the dashboard stays
sitting in config.yaml.
Scrub the main-slot mirror on delete, but only when it actually names the
deleted provider — an endpoint deleted while a different one is active must
leave that active assignment untouched. Both directions are pinned by tests.
Frowtek
b520f507cc