\begin{center}\small
\begin{tabular}{ll}\toprule
Symbol & Meaning\\\midrule
$x_{1:t}$, $V$ & token prefix; vocabulary size (32,768)\\
$B_\phi$, $H_t$, $h_t$, $d$ & backbone, residual stream, its last row, backbone width\\
$\hat H_t$, $K_t$, $V_t$, $z_t$, $w$ & bank-normalised stream, source-bank keys/values, summary, workspace width\\
$M$, $e_j$, $S^{(r)}$ & number of slots (16), address embeddings, workspace after $r$ actions\\
$\Act$, $I(a)$, $k(a)$, \Stop, $R_{\max}$ & nonterminal actions (24), written index set, group size, stop, cap (8)\\
$L_w$, $f_w$ & editor blocks (2, shared), editor FFN width\\
$\delta_j,\delta^c_j,\eta_j,c,\eta_{\max}$ & proposed change, clipped change, gate, clip threshold (1), max step (0.25)\\
$r(S,z)$, $U$, $s$, $\Delta_t$ & attention read, readout matrix (zero-init), fixed scale, correction\\
$g(s,a;y)$, $\hat g,\hat c,\hat\sigma,\hat\ell_{\mathrm{harm}}$ & intervention gain and its four predicted heads\\
$Q(s,a)$, $\lambda$, $\kappa$, $c(a)$ & action score, cost and risk penalties, analytic cost of an action\\
$n_t$, $C_t$ & executed edits at position $t$, realised relative cost\\
\bottomrule\end{tabular}
\end{center}