bug(unic-archon-dlc): a review sub-agent that omits its Commands I ran section reads as one that ran no check #670

Problem

#660 has review in unic-dlc-pr-review.yaml ask both review sub-agents to end their report with a Commands I ran section, and record the checks listed there in reported_checks. The request binds nothing. A sub-agent that omits the section, or lists a command without an outcome, gives the same empty reported_checks as one that ran no check.

synthesize also drops any positive that says a check passes, and after #660 review strips the Commands I ran section from the reports. So a sub-agent that ran a type-check and said so only in its prose, outside the section, leaves no trace in the summary: not as a fact, and not as an attributed claim. That is the shape of run 3's case in #487 § Observed, now silent rather than unattributed.

Acceptance criteria

• review tells apart a sub-agent that listed none under Commands I ran from one whose report has no such section.
• A missing section reaches the checks block as a sentence that names the axis and says its sub-agent did not report which commands it ran. It never reads as "no check ran".
• A check result a sub-agent states in its prose outside the section is recorded in reported_checks as that sub-agent's claim, by the same rules as a listed check, and is never dropped without a trace.
• The Box doc and ADR-0037 § Decision item 8 describe the change.
• The pull request states that the change is unproven in the Consumer until a Consumer run reads it.