Replicant 1.2.4

A docs/examples release with no library API change: the docker-compose reference example (examples/replication_pipeline — a Postgres\u2192Postgres bridge with an effect-once sink, a value-free receipts ledger, session-identity binding, and a liveness healthcheck) plus its reference-example CI canary running the example's own static gates and the full delivery/TOAST-sentinel/restart-resume proof sequence. The examples' READMEs ship in the Hex package; a whitelist repo-root .dockerignore keeps the build context free of secrets and crash dumps.