results: pass reciprocal KP short gate

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@@ -868,6 +868,28 @@ so the single RRM-3 full validation run opens. The 9.86-point gap despite nearly
 perfect instantaneous alignment is retained as a negative diagnostic rather
 than treating cosine as a proxy for optimization equivalence.
 
+### Modified Kolen--Pollack reciprocal baseline
+
+The independently implemented Akrout et al. reciprocal-plasticity baseline
+uses the same local parent activity and child teaching field at corresponding
+forward and feedback synapses, but each path recomputes its own correlation.
+It never reads or copies a weight or weight-update tensor. Mechanics checks
+give exactly zero direction, post-observation independence, and symmetric-
+limit update errors.
+
+Its sole frozen 20-epoch full-development record passes every KP-1 gate:
+
+| method | validation accuracy | early alignment | train-period feedback cosine | estimated MACs |
+|:--|--:|--:|--:|--:|
+| KP | **82.66%** | 0.885583 | 0.854594 (epochs 11--20) | 1.4519e14 |
+| BP at epoch 20 | 81.02% | n/a | exact by construction | 1.0949e14 |
+
+KP's final feedback/forward cosine is 0.901034. It uses zero task-loss queries,
+costs `1.3261x` matched BP after explicitly charging the second reciprocal
+correlation, and remains finite throughout the constant-LR screen. The result
+opens the frozen KP-2 full baseline. It is entirely prior-art baseline evidence
+and does not change the SDIL reviewer score.
+
 ## How to run
 `experiments/run.py --mode {bp,fa,dfa,sdil} --dataset {mnist,fmnist,cifar10} --depth D --residual {0,1} --act {tanh,gelu,silu,relu}`
 Batteries: `experiments/run_v2.sh <ds> "<depths>" <res> <act> "<seeds>" <ep> <pfx>`.