An active node with intact keys gets a new epoch without SSH:
GET challenge?cn=, then a node-signed POST token_rekey (epoch 0, no MAC)
whose body is SEALed to the panel box key under the request context.
MAIN checks the signature before recording anything, then the nonce,
state=active, a once-a-minute limit, the single-use challenge
(NonceStore::consume, atomic via a used marker), the instance_id
attestation (a mismatch quarantines) and the licence (the mint). The
reply is panel-signed `pre` and bound to the node and request nonce.
TokenService::rekey drops every other epoch row.
The install data now carries panel_box_pub; the test fake gets a real
box key, openSealed and licence-gated granting signatures.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DcNdxHieZuUh3EnMUKt7zf
ClusterApi serves health, challenge, enrol_complete, token_refresh, hello
and heartbeat. Nothing is written before the MAC (and, for token ops, the
node signature) verifies; refusals are panel-signed and bound to the
request nonce. Token refresh is idempotent per agent ephemeral key, so a
node holds at most two valid epochs. ClusterApiTest runs every flow against
a fake of the extension's token half and, opt-in, a real xcvm_core.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Es8UhyPS8MNjuYTagqfGWi
Claude