v0.42.0

• relais dataset seed <file|-> [--json] writes a described set of runs into a new ledger, so relais report can be checked against known counts (used by the value-checking holdout). The runs are JSON lines, with an optional first line {"seed_schema": 1}. Each line gives a status, accepted_by, created_at, cost_micros, holdouts and exposures, and they go through the same ledger writers as real runs.
  • It refuses (exit 2) unless RELAIS_STATE_DIR names a directory other than the default one, however spelled, with no ledger.sqlite, -wal or -shm in it.
  • A bad file is refused whole, each bad line printed as file:line: reason.
  • I/O errors exit 1. With --json, stdout carries only {seeded, ledger}.
  • The ledger appears complete or not at all: it is staged per invocation and published with hard_link.

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What's Changed

• feat: relais dataset seed command by @fredericrous in #353
• chore(release): v0.42.0 by @fredericrous in #354

Full Changelog: v0.41.0...v0.42.0