- Fix _validate_reachable_outcomes to skip unknown nodes (root cause) - Add safety net in validate_workflow_draft for diagnostics exceptions - Add test proving forward-route edits persist as invalid
- Challenge prompt requiring workflow/deployment/run evidence - CLI harness (run_opencode_trials.py) for running N agent trials - Classification: success, workflow_not_used, run_failed, timeout, parse_error, unknown - 8 unit tests covering build/parse/classify/path logic - README with usage docs and optional Playwright MCP attachment - Evidence index and roadmap updated - Plan archived to historical/