The SP7 controller's CQL reference signal was reading cql_sx (post-SAXPY,
budget-scaled) which created a self-perpetuating deadlock at small
budget values: cql_sx_norm = budget × raw_grad → small budget → small
cql_sx → controller can't update → budget stays small.
The earlier offset 6 → 3 attempt failed because grad_decomp_launch_cql
was never effectively populating slot 3 — the snapshot pattern measures
‖grad_buf − snapshot‖, but apply_cql_gradient writes to cql_grad_scratch
(separate buffer), not grad_buf, so the snapshot delta is always 0.
This commit adds a real producer kernel cql_raw_norm_compute that reads
cql_grad_scratch directly and computes ‖raw_cql‖ over mag/dir/trunk
slices. Wired to fire AFTER apply_cql_gradient and BEFORE
apply_cql_saxpy, populating grad_decomp_result_pinned[3..6] with the
raw norm independent of cql_budget.
SP7 launcher updated to read from offset 3 (now: real raw CQL norm,
not the never-populated cql snapshot delta). HEALTH_DIAG label renamed
cql_sx → cql_raw to reflect the new contract; component index in the
cached grad_component_norms_* arrays switched 2 → 1.
The historical grad_decomp_launch_cql() call is removed — keeping it
would overwrite the slot with 0 after cql_raw_norm_compute fires. The
paired grad_decomp_snapshot_cql snapshot is left in place to scope the
diff to Path A; buffer cleanup (grad_snapshot_cql allocation +
grad_decomp_launch_cql definition) belongs in a follow-up commit per
feedback_no_partial_refactor.
Files: cql_raw_norm_kernel.cu (new, 97 LOC), build.rs,
gpu_dqn_trainer.rs (struct field + cubin static + load + launcher +
SP7 read offset 6→3), loss_balance_controller_kernel.cu (docstring +
arg comment), fused_training.rs (4 launch_cql_raw_norm call sites,
1 dead grad_decomp_launch_cql call removed), training_loop.rs
(HEALTH_DIAG label + index), audit doc Fix 31 SP7 Path A entry.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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