Revoke Oauth Connection

Revoke one of the caller's OAuth connections — its whole chain.

connection_id is the id the list returns (the lineage_id). A chain the caller does not hold in their current org — someone else's, another org's, or one that never existed — is the ordinary 404, so the route cannot be used to learn whether a lineage id exists.

Idempotent for the owner: revoking a chain that is already dead answers 200 with revoked: 0 rather than an error, so a double-click or a stale list does not surface a failure.

Stops renewal immediately. The client's current access token is a stateless 1h JWT and lapses on its own within the hour.