\section{Reproducibility and release}
\label{sec:reproducibility}

The repository \texttt{wp41\_uqo} contains the package \texttt{chronos\_x} (data connector, calendar, quality
checks, corporate actions, grids and windows; models; training; scoring and inference; baselines), the numbered
scripts that produced every artifact cited here, the configurations that freeze the protocol
(\texttt{configs/pilot}, \texttt{main}, \texttt{ablations}, \texttt{baselines}, \texttt{final}), the test suite
(calendar and timestamp conventions, grid construction on synthetic bars, leakage gate with a quarantined
future-feature fixture, model shapes and parameter counts, numerical checks of the Student-$t$ density and CRPS
against Monte Carlo, copula sampling and likelihood, live API contract tests), the universe manifest with its hash,
the provenance logs of every API call, the phase reports, and the LaTeX source whose tables and macros are
generated from the saved results. A synthetic cache in the exact FinData schema lets anyone run the entire pipeline
without a license (\texttt{configs/synthetic\_smoke.yaml}). Raw bars, grids and per-origin returns never leave the
compute node; the released artifacts are code, aggregate scores and figures of scores. The FinData dataset versions
used are \num{17375} (stocks) and \num{5162} (ETFs); the API audit and the coverage audit are saved with the
results. Seeds, checkpoints and the exact commands are listed in \texttt{docs/REPRODUCIBILITY.md}.