- Add section 9 to PHASE-Z-PIPELINE-STATUS-BOARD.md carving section 3 item (j) into 8 IMP-95 sub-axes (j1-j8). j1-j5 = trace-only, j6-j8 = guarded. - Marker grammar: <!-- IMP-95:<axis> -->VALUE<!-- /IMP-95 --> (distinct from IMP-91 grammar so scripts/update_status_board.py MARKER_RE cannot rewrite IMP-95 cells). - Allowed value enum: {pending, trace-only, guarded, active}. - tests/scripts/test_update_status_board.py: +1 import, +4 module-level constants, +3 test functions verifying marker presence/count (8), value domain enum, IMP-91 updater isolation against IMP-95 cells, and IMP-95 regex rewrite idempotence. IMP-91 tests untouched. - No production-code touched. Default-OFF flag posture preserved; all cells trace-only or guarded.
- u2~u5: tests/integration/test_multi_mdx_regression.py — MDX_SET=(01..05) cached integration runs + status/structural/visual snapshots + full_mdx_coverage assertion (9 snapshots populated for 01-05). - u6~u11: F0 normalize / F1 V4 ranking / F2 slot_payload / F3 classifier-only AI / F4 layout / F5 final.html axis per MDX_SET. - u12: pyproject.toml — pytest-json-report>=1.5 in dev extras. - u13: .github/workflows/multi-mdx-regression.yml — pytest+artifact CI. - u14: scripts/update_status_board.py + tests/scripts/test_update_status_board.py — idempotent JSON marker updater (3 unit tests pass). - u15: PHASE-Z-PIPELINE-STATUS-BOARD.md — 30 F0-F5 × mdx01-05 markers initialized `?` + workflow wiring. Stage 4 verify: 59/59 PASS targeted (smoke 6 + updater 3 + integration 50), 386/386 PASS regression umbrella, 0 failures. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>