Models with head_dim=64 (e.g., GPT-OSS-120B) may crash or produce
degraded output with turbo compression. WHT requires sufficient
dimensionality for CLT convergence. Reported by NigelTufnel12345.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-Authored-By: tturney@psyguard.ai