The test was named "is not an OAuthError, which is why the retry path must not
claim it" and asserted only `name` and `typeof tokenEndpoint`. Neither touches
the OAuth hierarchy, so a future SDK reparenting the class would leave it
passing with its title now false — and the comment promising the #2280 handling
would be revisited if that changed was hollow. A test that has quietly stopped
testing its subject is worse than no test.
It now asserts against the hierarchy both ways, `OAuthError.isInstance(err)`
and `instanceof`. Verified by mutation rather than assumed: flipping the
assertion to simulate the reparenting fails exactly this test and nothing else
(1 failed, 15 passed).
Also fixes a doubled "terminal terminal", collateral from the round-2 SEP label
removal.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018MvNbmAtQuWhDvzi4yXDju
Signed-off-by: cliffhall <cliff@futurescale.com>
8ca00fa2d6