Signals is the weathership foundation.

Signals is no longer usefully described as a column-classification pipeline with a query stack beside it. It is the hub the rest of weathership attaches to.

Independent engines — Gaius, Ægir, Atelier, Hermes Agent — keep their own products, native gRPC, and models. They register zndx.engine.v1.Engine beside that native service and speak signals-protocol. Signals pins the protocol, runs the scheduler (zndx.scheduler.v1, YuniKorn as the lab backend), holds the warehouse, and is the only process that talks to Airflow.

Workloads are Applications YuniKorn admits. Resource class is the queue leaf; project is identity. Interactive sessions claim root.internal.inference.agent-rtc for one GPU, only while they run. Hermes keeps WebRTC on the engine; the claim is a coordination Activity Signals materialises as an Airflow DAG. Metaflow is the production flow path: one metadata service, artifacts on RustFS, events through Knative Eventing.

Storage is transparent hierarchical storage in Percy’s sense: Kudu for hot rows, Iceberg on RustFS for settled weeks, Impala views across both, PostgreSQL applications through impala_fdw. Atlas is the lineage record. The in-tree sigint classifier still writes tags there; it is one consumer of that record, not the definition of the project.

Source and operator notes: github.com/weathership/signals. Project page: Signals.