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A0 integral-control checks

Synthetic, dimensionless models; no organism result or H* verdict.

Gates: 24/24 passed.

Measurement Result
A0 circuit: endpoint vs direct development (max abs, log units) 2.1e-10
A0 circuit: endpoints vs linear map P dz0, same samples (relative RMS) 0.0293
A0 circuit: covariance vs P S0 P^T (relative) / 95% sampling band 0.122 / 0.164
A0 circuit: variance of sensor-controlled combinations / initial 0.000519
Two-sensor neuron: endpoints vs linear map P dz0 (relative RMS) 0.000703
Two-sensor neuron: covariance error, no jitter / with jitter / 95% sampling band 0.108 / 0.105 / 0.174
Two-sensor neuron: J Cov J^T vs set-point jitter covariance (relative) 0.0507
Unstable root: sensor residual / loop-gain eigenvalues 5.55e-17 / 0.74, -0.732
Unstable root: distance of developed endpoint from it 122
History, constant gain: adult difference after the transient manipulation 8.66e-15
History, non-integrable gain: adult difference, excitation / mild silencing (involutivity defect) 0.0239 / 0.00011 (0.0329)
Gauge G -> G C: endpoint difference / recovery half-times 6.37e-11 / 0.75 vs 0.2
Implicit gradient vs developed-endpoint finite differences (max abs) 1.32e-06
Gate Passed
A0 endpoints match direct development yes
A0 endpoints follow the linear map P dz0 (<5%) yes
A0 covariance within sampling band of P S0 P^T yes
A0 controlled combinations suppressed (<1%) yes
two-sensor slice solve matches development yes
two-sensor endpoints follow the linear map P dz0 (<5%) yes
two-sensor covariance within sampling band yes
covariance with set-point jitter within 2x sampling band yes
J Cov J^T equals jitter covariance (<2x sampling band) yes
unstable root solves the sensor equations yes
unstable root flagged by loop gain yes
development does not reach the unstable root yes
continuation does not report the unstable root yes
constant gain conserves N^T z yes
constant gain is involutive yes
constant gain: no lasting history effect yes
non-integrable gain detected yes
non-integrable gain: lasting history effect yes
both reach the set points yes
gauge: G C leaves endpoint unchanged yes
gauge: G C changes recovery time yes
implicit gradients match development FD yes
augmented det identity yes
augmented singular when JG singular yes

Seed 11. Full values: report.json.