\begin{table*}[t]
\centering
\small
\caption{Diagnostic workload outside the headline tests.}
\label{tab:diagnostic-inventory-v5}
\resizebox{\textwidth}{!}{%
\begin{tabular}{lll}
\toprule
Diagnostic & Scale & What it exposes \\
\midrule
Protocol baseline rows & 856 & Random/in-city/LOCO split sensitivity \\
Failure rows & 371 & Where strict transfer produces city-level failures \\
Directed domain-shift pairs & 14,762 & How far source and target cities differ \\
City robustness rows & 138 & Which cities improve or regress by target \\
\bottomrule
\end{tabular}
}%
\end{table*}