Every federation peer-to-peer call now prefers FIPS (direct ULA dial
over `fips0`, ~LAN latency) and falls back to Tor only on network
failure. Per-method ed25519 signatures are preserved on both
transports so authenticity doesn't change.
- fips::dial::PeerRequest — fluent builder that owns transport
selection. Returns the Response plus the TransportKind that carried
it, so handlers can log or expose which path was used.
- fips::dial::is_service_active — free-standing async probe used by
migration sites (the transport::fips::is_available cache is keyed
to a `&self`, not usable from static contexts).
- federation/sync.rs: sync_with_peer + deploy_to_peer drop the
hand-rolled reqwest::Proxy dance, call PeerRequest instead.
- federation/invites.rs: notify_join takes the remote's fips_npub
(already parsed out of the invite code since v1.4) and dials over
FIPS when available. The "peer-joined" signature domain is
unchanged.
- api/rpc/federation/handlers.rs: DID rotation broadcast loops over
federated peers through PeerRequest; the per-peer result payload
gains a `transport` field so the UI can surface mesh vs. onion.
- api/rpc/tor/mod.rs: onion-address-change propagation is now the
most useful FIPS-first call — fips_npub is stable across onion
rotation, so peers get the new address even when the old onion
is already dead.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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