publish / publish (push) Failing after 18s
The bootstrap key generated during implementation was lost with its scratch directory. Nothing shipped pinning it, so this is a straight replacement of slot 0 rather than a rotation — the second slot stays reserved for a real one. The private half now lives only in the INDEX_SIGNING_KEY secret, so CI is the only thing that can sign. This push is what makes it do so: the committed signature is still the old key's, and the verify self-check will fail loudly if the secret does not match the public key pinned here. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>