[TheGreatAxios]

Summary

• Add an optional versioned decision block to worker reports with strict fenced parsing that never infers verdicts from prose
• Render bounded digests that prioritize failures and required actions with visible truncation and overflow signals
• Keep harness execution status separate from worker claims and mark unknown metadata explicitly

Verification

• bun run check passes including the full guarded suite
• Adversarial prose, oversized input, legacy, invalid, and unavailable-report cases covered by tests
• Live-model improvement measurement remains pending on the collaboration eval lane

Fixes CL-9919

[linear-code]

CL-9919

[TheGreatAxios]

Closed per operator triage decision — Linear issue being canceled; content superseded or deprioritized.