DomainConfig.remote {url, token, cache_ttl, refresh_interval} marks a
domain as backed by a remote paskia instance (auth host required). The
remote publishes committed changes via struct store()/delete() hooks and
explicit emits in field-mutating operations into syncfeed, an in-RAM
sequenced ring buffer served over a token-gated WebSocket
(/auth/api/sync/ws, tokens from PASKIA_SYNC_TOKENS env). The satellite
keeps a plain DB replica per remote URL, applies snapshots/events,
enforces expiry locally, and writes session refreshes back over the same
channel. /validate refreshes locally with write-behind; /logout,
/set-session, /token-info and /auth/oidc/* are proxied to the remote
with the original Host header; logout also evicts from the replica.
Replicas go fail-closed (503) after cache_ttl of silence.
LeoVasanko
5ecb10166d