The SP7 smoke at 237b3dbfb showed all 8 (head, branch) combinations
stuck at bootstrap across 5 epochs, despite Q-variance and gradient
norms being non-zero. The activation flag mechanism is monotonic per
fold (once active, stays active), so 8/8 inactive across all observed
epochs implies the kernel never hits the active path — but we can't
confirm whether that's because (a) grad_decomp_result_pinned reads
zero at SP7's epoch-boundary call site, or (b) something else.
Added two HEALTH_DIAG lines:
- grad_decomp_pinned — reads bytes [0..12,24..36,36..48] of the
pinned buffer the SP7 kernel reads; surfaces iqn/cql_sx/c51 mag/
dir/trunk norms exactly as the kernel sees them.
- lb_active_per_branch — reads LB_{CQL,C51}_ACTIVE_BASE+0..4 from
ISV; surfaces the activation flag state per (head, branch).
Together these disambiguate "grad_decomp not populated at SP7 read
time" from "values populated but kernel cold-start branch fires for
other reasons".
Purely additive — no behavior change. Audit doc Fix 31 sub-bullet.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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