Refs #1
- /v1/diff endpoint returns each node's fingerprint set + tombstoned
auto-thread status
- knox gossip diff <peer-url>: shows peer-only/local-only fingerprints
(pull/keep preview) and tombstone divergence (resolved-on-peer vs
would-resurrect)
- knox gossip sync: one-shot anti-entropy sweep + reconcile
- gossip server starts before initial seed so peers can reach a booting
node; KNOX_PEER_ADDR alone now serves without KNOX_PEERS
- integration tests for diff + tombstone reporting
- e2e verified: two live daemons, diff previewed 1655 peer-only fps,
sync converged second node to 1655 observations