Research question
Does trade-level execution flow add stable information after market regime, chronology and out-of-sample evaluation are held constant?
Data boundary
The study uses independently maintained public exchange archives. Events are matched chronologically and divided into development, validation and sealed evaluation periods.
Current finding
The additional detail improved some development-period descriptions, but the improvement did not persist strongly enough in sealed evaluation to support deployment. The result remains a research note rather than a trading system.
Why the negative result matters
A larger dataset can make a weak relationship look precise. Rejecting unstable improvements is part of the research process and prevents data volume from being mistaken for evidence.
What remains private
Feature definitions, thresholds, event labels, instrument-level records and executable decision logic are not published.