Documents the SP5 implementation (110 ISV slots, 8 layer-A producer kernels,
1 atomic Layer B consumer migration). Closes plan task #295 partial — the
8th pearl (pearl_sp5_close_out) and full close-out commit are DEFERRED
until the 50-epoch 3-seed × 3-fold L40S validation (#289) completes.
7 new memory pearls landed:
pearl_per_branch_c51_atom_span — Pearl 1
pearl_per_branch_loss_budget — Pearl 2
pearl_per_branch_noisy_sigma — Pearl 3
pearl_per_group_adam_hyperparams — Pearl 4
pearl_per_branch_iqn_tau_schedule — Pearl 5
pearl_kelly_cap_signal_driven_floors — Pearl 6 (cross-fold-persistent)
pearl_trail_stop_signal_driven — Pearl 8
Audit doc append covers Pearl 6's cross-fold carve-out, Pearl 4's ε-only
fall-back path, and the smoke-test-ks2wf @ 5845e4403 validation metrics
(sharpe 4.5→9.77, label_scale 19-28, trade_count 6468-9432).
Refs: SP5 spec at 6e6e0fa11
7994d4d1b7