- tools.test.ts still asserted the pre-#5812 ±context expansion for offset/
limit and archive-entry reads; updated to the exact-bounds contract.
- selector-controller-logout.test.ts mocked the old modelRegistry.refresh;
#5786 switched logout to a provider-scoped refreshProvider(id, 'online'),
so the mock never resolved and the test timed out.
- Added a credential-picker `/logout` flow for selecting one OAuth account.
- Added optional `/logout` provider argument and unknown-provider error handling.
- Changed logout handling to delete only the chosen credential and keep others.
- Added AuthStorage APIs to list and remove credentials by id, with remote deletion hook.
can1357