Evanescent counterterms

(i) The naive p22-type choice (subtract the $\tilde{g}$ part of every loop input) is not ${\sigma }_0$-consistent: tree vertices regenerate $\tilde{g}$ structures from 4D loop parts (22 / 26 terms left on $ccK$ / $cc\bar{c}$). (ii) Joint test: $CT=-{\Gamma }^{\mathrm{pole}}+X$ with $X$ a generic local, purely evanescent ${\kappa }^3$ functional (monomials with at least one $\tilde{g}$) for ${\Gamma }_{Kch}$, ${\Gamma }_{\bar{c}ch}$, ${\Gamma }_{c^{\ast }cc}$ and a Bose-symmetric ${\Gamma }_{hhh}$; the same $X_{Kch}$, $X_{\bar{c}ch}$ enter the ghost rows and $hhc$. The linear system over $\mathbb{Q}(i)$ (821 unknowns) is solvable; a particular solution ($X_{c^{\ast }cc}=0$) is certified and verified by substitution; 152 parameters stay free (non-unique). Not tested: ghost-equation compatibility of $X$, four-point rows.