diff --git a/prod/clean_arch/violet/test_violet_sizing.py b/prod/clean_arch/violet/test_violet_sizing.py
index 793e52e..34fb0b1 100644
--- a/prod/clean_arch/violet/test_violet_sizing.py
+++ b/prod/clean_arch/violet/test_violet_sizing.py
@@ -448,6 +448,8 @@ def test_gate_mc_bit_identity():
     agree = rng.uniform(0.0, 1.0, N)
     posture = rng.choice(["APEX", "STALKER", "RESTORED"], N)
     capital = rng.uniform(1e4, 1e6, N)
+    # NOTE: boost>2.5, β∈{0,1}, mc=0, and the OB agreement boundary are covered by
+    # test_gate_mc_extreme_multipliers (typical-vs-extreme split — verified 2026-06-15).
 
     sz = _sizer()
     eng = _orch()