9 substantive issues addressed inline:
1. ISV-driven design elevated from 'if applicable' to MANDATORY for
all dynamic bounds in SP1 fixes. Numerical-stability ε bounds are
the only carve-out (Invariant 1). Hardcoded tuning constants for
dynamic ranges explicitly rejected.
2. F0 Sharpe regression criterion changed from absolute (≥55) to
ratio-based (≥95% of latest baseline; floor 53.08 currently).
Prevents iterative erosion across multiple fix commits.
3. 'F1 trending positive' replaced with concrete monotone-improvement
test: Best Sharpe at last epoch ≥ Best Sharpe at first epoch of
the same fold.
4. Pass criterion distinguishes NaN-CLAMPED-TO-ZERO (failure) from
'Genuine grad collapse' (legitimate observation, permitted) per
the existing infrastructure from commit d1808df14.
5. Multi-source NaN scenarios explicitly supported — γ + β may
identify multiple kernels; SP1 fixes ALL within the same cycle.
6. F0-safety paper-review gate added BEFORE smoke validation. Audit
doc carries 'F0 risk' (low/medium/high) per proposed fix; high-
risk fixes get math-on-paper inspection before consuming L40S.
7. Audit doc structure now requires 'ISV bound option' column —
forces ISV-first thinking at audit stage, not as afterthought.
8. Anti-patterns expanded: micro-clamping (per-op clamping that hides
upstream causes); combining unrelated fixes (anti-pattern of the
rich-commit principle); hardcoded constants for dynamic bounds.
9. 48-slot allocation explicitly justified (24 used + 12 new + 12
headroom) AND marked reviewable by SP2 if right-size differs.
All 5 design sections preserved structurally; revisions integrated
inline. Per brainstorming skill: spec self-review fixes applied
without re-review cycle.
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