Add two tests omitted from the initial sprint 4 run: - us21: SimulationList MITRE column shows "TA0007 +2" for 1 tactic + 2 techniques - us20: MitreMatrixModal Tab wraps to first focusable, Shift+Tab wraps to last Suite: 158 passed, 0 failed (1 expected test.fail for AC-21.6 slug defect). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>