Summary

• Add first-class workflow run replay metadata with schema version, workflow spec version, deterministic spec hash, and spec snapshot.
• Include resolved step and handler metadata in workflow step records.
• Expose evidence_refs and replay metadata in the agents/run-workflow output schema.
• Extend focused smoke coverage for runner serialization and ability schema contracts.

Testing

• php tests/workflow-runner-smoke.php
• php tests/agents-workflow-ability-smoke.php
• composer smoke
• composer phpstan

AI assistance

• AI assistance: Yes
• Tool(s): OpenCode (GPT-5.5)
• Used for: implemented and tested deterministic workflow run record metadata.