barbie-bot 0daf413b47 Prevent sole admin from deleting their account ...

Without this guard, the last admin in the system could delete their own
account, making the application unmanageable. This adds a model method
`User#sole_admin?`, a controller guard in `RegistrationsController#destroy`,
and disables the delete button in the profile edit view when the current
user is the only remaining admin.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-03-01 06:52:14 +00:00

7.4 KiB

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