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exp(crosspost): live A/B of the scoring quirk fixes - #394
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Fix arm (RU v4q / EN v2q): intended impression penalty 0.8 / 0.5 instead of 0, and x1.0 instead of x0.5 for sources without history. Random arm per decision drives both preselect and pick; score_version 9 / 8 records it. Readout: docs/analyst/crossposting-quirk-fix-ab.sql, check 2026-11-28.
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Live 50/50 per-post A/B in both channels.
The random arm drives both the top-N preselect and the pick.
crossposting.score_versionrecords it (9 / 8).experiments/2026-11-01-crosspost-quirk-fix-ab.md, check on 2026-11-28.docs/analyst/crossposting-quirk-fix-ab.sql. It parses on prod and returns no rows yet.