chore: mark T5 complete in NEXT_100_PR_MAP (#987); closes Phase T (#988)

Co-authored-by: OpenCode <opencode@example.com>

Author: cschanhniem

docs/research/NEXT_100_PR_MAP.md

@@ -244,4 +244,4 @@ Make it possible for an external reviewer to understand, in one artifact, why sp
 | T2 | [x] Add cross-batch audit summary schema (CBA2-). (#980) | Aggregates BTI records across all batches; counts families per grade; flags batches with low completeness; required for multi-batch meta-analysis. | C |
 | T3 | [x] Add batch evidence gap report schema (BEG-) (#983). | Per-batch listing of which artifact types are missing across all families; prioritized gap list; enables targeted evidence collection. | C |
 | T4 | [x] Add selection audit trail schema (SAT-). (#985) | Immutable ordered log of every selection/rejection decision with evidence_artifact_ids and rationale; enables full auditability from nomination to wet-lab shortlist. | C |
-| T5 | Add pipeline completeness certificate schema (PCC-). | Top-level certificate asserting that all required evidence schemas are present for a given pipeline run; completeness_grade (A–D); closes Phase T. | C |
+| T5 | [x] Add pipeline completeness certificate schema (PCC-). (#987) | Top-level certificate asserting that all required evidence schemas are present for a given pipeline run; completeness_grade (A–D); closes Phase T. | C |