# SR-to-OID/CCD handover

## Kármán cloak

1. **Rear steady counter-rotation (strongest evidence).** The joint rear law contains the constant \(\mp 3.4312\). Removing it causes the largest closed-loop degradation in the established term tests. In a disturbance-free deployment, the last-cycle rear actions are \((-3.4306,3.4318)\), while a discrete constant-speed sweep peaks at \(\mp5U_0\). OID should search for a symmetric streamwise correction generated in the rear gap and retained at the downstream sensors. CCD should quantify the connection from the rear actuator pair to the mean/low-frequency downstream deficit mode.

2. **Symmetric rear lift feedback \(Cl_{rear,s}\) (moderate evidence).** This is the only state-dependent rear term retained by the article law. Per-case coefficients vary from 0.22 to 1.70, so it is a modulation rather than a universal gain. CCD should seek a force-correlated source mode near both rear cylinders and its delayed downstream descendant; phase-conditioned analysis is preferable to zero-lag correlation.

3. **Rear drag asymmetry \(Cd_{rear,a}\) in the front action (weak evidence).** This term provides antisymmetric front-cylinder trimming, but deletion tests rank it below the rear terms. OID/CCD should test an antisymmetric near-front mode and expect a weaker downstream canonical correlation.

## Illusion

1. **Front lift \(Cl_F\) (moderate evidence).** Coefficient scaling shows that this term dominates action-amplitude sensitivity, and the 1.5L per-case front refit is nearly pure \(Cl_F\). OID should compare front-body source structures among 0.75L, 1L and 1.5L; CCD should test whether the associated descendant changes wavelength/phase with target diameter.

2. **Rear drag asymmetry \(Cd_{rear,a}\) (weak-to-moderate evidence).** It appears in both heads but is less influential and partly replaceable. Search for antisymmetric rear-gap structures and explicitly compare the large-target 1.5L regime with the smaller targets.

3. **Absence of explicit target/error terms (negative evidence).** Those variables were available but did not recur in the selected low-complexity static laws. This does not prove feedforward target information is absent: OID/CCD should test lagged and phase-resolved structures because a static obs-action regression can alias internal PPO memory or phase relationships into measured forces.

## Analysis contract

For each element, report actuator-to-source and source-to-downstream relationships separately; preserve upper/lower reflection parity; resolve lags in units of \(D/U_0\); and do not promote spatial coincidence to causality without time-lagged evidence. Compare the SR ranking against canonical-correlation magnitude, but retain contradictions rather than forcing agreement.
