Same bug as upstream agent-runtimes: scoped form never matched
because the dispatcher does literal scope.id compare and
owner_principal_id stores the user UUID, not 'paul'.
Pairs with PATCH /v1/accounts/{id} renaming the live account_label
to 'anthropic-cloud-paul-oauth' so the bare ref resolves uniquely.
Closes BUG-22a.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>