When a run is about to start its 3rd cycle, the host review bundle asks
Codex to supply a step-by-step implementation plan via the new decision
field implementationGuidance, which is injected into the executor fix
prompt (with re-sent plan context) so the executor can converge faster.
- Add DETAILED_GUIDANCE_CYCLE_THRESHOLD and bundle signal in reviewWorkflow
- Add optional detailedGuidanceRequested/reviewerInstructions to the bundle
- Add optional implementationGuidance to HostDecisionV1 (validated, <=20000 chars)
- Inject guidance section and re-send plan/criteria on marked fix cycles
- Cover with integration, executor, and config validation tests
liujing