One Redis session store and one cookie for all three identities. Staff
login returns the same error for every failure mode and spends a bcrypt
comparison against a dummy hash when no user exists, so neither the message
nor the timing confirms which addresses have accounts.
Staff users are created only by adminctl. There is no signup endpoint: a
licensing authority that can be joined over the internet is not one.
Pins gin and go-redis to the versions server/ already uses rather than the
latest tidy would pick.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
mrhid6andClaude Opus 5
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