a9fc838577
A member-with-app_admin who removes their own membership keeps a now-
broken Members tab open until reload — `myRole` is only computed once
in `loadApp`, and the next `/apps/{slug}` fetch would 403 anyway.
After the DELETE succeeds, if the removed user is the caller, navigate
back to /apps instead of refreshing the local member list.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>