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For each diagnostic, sweeps threshold across orders of magnitude on the
3-seed audit data and reports the verdict at each value.
Key calibration findings (3 seeds):
Diagnostic (a) max per-block growth:
Healthy max (BP/EP): 11.0
Degenerate min (DFA/SB/CB): 694
Separation gap: 63x
Default threshold 50 sits comfortably in the middle.
Any threshold in [12, 693] gives the same verdicts.
Diagnostic (b) ||g_L|| at floor:
Healthy min (BP/EP): 1.02e-4
Degenerate max (DFA/SB/CB): 4.18e-9
Separation gap: 24,338x
Default threshold 1e-7 sits comfortably in the middle.
Any threshold in [4.2e-9, 1.0e-4] gives the same verdicts.
Diagnostic (c) cross-batch stability:
NOT a clean binary discriminator across seeds. BP s456=0.114
near threshold; DFA s42=0.047 (noise sub-mode) doesn't fire;
SB s456=0.035 (noise sub-mode) doesn't fire. (c) is for sub-mode
interpretation, not binary detection.
This is the calibration evidence answering the E&D reviewer question
'why these specific thresholds?'.
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