CLI result contract v1

Pass --output-format json to receive one compact JSON success document. The result.schema.json schema defines its stable fields. The document identifies the operation and run, binds scenario and artifact hashes, reports replay counts and the normalized current valuation, and names any created artifacts.

Failures use the existing diagnostic contract v1. Selecting JSON output also selects JSON diagnostics, so automation does not need to combine two format flags. Diagnostics are always written to standard error.

When --journal - is selected, standard output contains only the complete JSON Lines journal. The success document moves to standard error. Its journal artifact is named stdout, and the final run_completed record signals successful completion. A consumer must also require a zero process exit status. Strategy protocol messages remain confined to the supervised child process.

This result contract is independent of the scenario contract version. Its valuation uses the current v16 valuation shape so consumers receive one stable automation model for older accepted scenarios.