Previously the only way to resend was to re-invite the same email from
scratch, creating a whole new invite row. Adds a "Resend" action next
to Revoke on each pending invite -- rotates the token and refreshes the
7-day expiry on the same row (the old link stops working the moment
it's used, same instinct as a password-reset resend), then re-sends
the invite email.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>