Builder runtime
Requirements for moving a definition from NO DATA to scheduled collection.
#Assignment
An operator must review the schema and set runtimeEnabled only for an implemented deterministic model. Publication alone does not execute user code.
#Input contract
The worker must fetch the complete configured universe, reject invalid and stale inputs, and use unique source timestamps.
#Output contract
The worker stores components, input IDs, times, freshness, model version, output, and stance under an idempotent ID.
#Operational contract
The worker must hold the engine lease, update heartbeat success/failure, survive restarts, and share the production SQLite path with the web process.