\section{Related Work}
\label{sec:related-work}

% TODO content notes:
% - Lookahead bias / data leakage in backtesting: cite the standard
%   references (e.g. Bailey & Lopez de Prado on backtest overfitting,
%   "pseudo-mathematics" critiques, Probability of Backtest Overfitting).
% - Vectorized vs event-driven backtesting engines: tradeoffs in speed vs
%   correctness; vectorized engines are more prone to index-alignment bugs
%   because there is no explicit "current bar" boundary enforced by the loop.
% - Synthetic-data / null-model testing in finance: permutation tests,
%   Monte Carlo null models, white-noise sanity checks as a general technique
%   to detect overfit or leaky strategies before risking capital.
% - Position this paper: distinct from prior work in that it (a) documents a
%   live, reproducible incident with full forensic trail, and (b) packages
%   the diagnostic as a minimal, CI-runnable harness (Section 5) rather than
%   a one-off statistical test.