[cschanhniem]

Summary

• NegativeResultDashboard: 13 fields, aggregate rejection statistics across a batch
• 13 validation rules: NRD- prefix, pipeline_version+batch_id non-empty, ISO date, total_candidates_evaluated ≥1, total_rejections in [0,evaluated], rejection_rate in [0,1] and consistent (tol 0.01), top_rejection_stage vocab (7), top_rejection_reason vocab (9), high_confidence_rejections in [0,total], all_rejections_have_nrr=True enforced, summary non-empty and ≤400 chars, notes ≤300 chars
• 3 warnings: rejection_rate >0.8, 100% rejection, notes empty
• 63 tests; BASELINE 5855->5918
• CLI: openamp-foundry negative-result-dashboard-check
• Implements Phase F F9 — NRD- is the aggregate summary layer; completes NRR→NAS→FCR→NRD negative-result chain