`target_ratio[CQL][b] = ANCHOR_CQL_RATIO * (1 - flatness[b])` had the
sign inverted: it pushed CQL HIGH when Q was flat (the collapse state)
and LOW when Q had variance. Per pearl_2_budget_kernel.cu, `flatness =
var_q / σ²`, so flatness HIGH means Q has variance — exactly when
overconfidence-risk-driven CQL pressure should kick in.
Symptom (T10-v3 train-multi-seed-x7sl2 logs): Once IQN Fix 34 woke
IQN-mag/ord/urg branches and produced real Q-targets, the controller's
inverted formula sent cql_budget to MAX_BUDGET=1.0 saturation on every
branch, the conservative pull kept Q flat, the model collapsed to
single-Flat-action eval (val_active_frac=0, dir_entropy=0,
trade_count=1, sharpe=0).
Fix is one operational character: `(1 - flatness)` → `flatness`. C51
formula was already correctly aligned (`flatness * ANCHOR_C51_RATIO`)
and unchanged.
Per pearl_controller_anchors_isv_driven.md: the inverted formula was
masked for months because the IQN-dead regime (Fix 34) suppressed
cql_raw on mag/ord/urg, never letting the controller engage with the
inverted target. Fixing the IQN regime exposed the dormant formula bug.
ANCHOR_CQL_RATIO=2.0 and MAX_BUDGET=1.0 remain hardcoded; Fix 36 will
make those ISV-driven via a GPU train_active_frac canary signal per
the pearl's "pick the canary that fires under the pathology" rule.
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