Caught by inducing on real rows. The first attach ran and marked 642 rows
market-unavailable while attaching ZERO closes — because it selected a
`fair_prob` column from closing_captures, which has none. That table stores
over_odds and under_odds deliberately (Session 64) so the de-vig can run later
against the same engine the grade-time fair price uses; asking it for a
probability returns nothing and makes every row look closeless.
The de-vig now runs here, via devigTwoWay, which is what makes lock and close
comparable at all. A one-sided capture yields no fair probability and is
correctly not a close.
Repair checked rather than assumed: the 642 markings turn out to be CORRECT —
every one is a game from before closing capture existed on 2026-07-20, so those
rows genuinely have no close and the absence is true. Zero capture-era rows were
wrongly marked. The bug would have mis-marked every future row, which is what
the fix prevents.
Two tests added: the de-vig path with real prices, and a source assertion that
the query never again asks closing_captures for a column it does not have.
Tests 3616 passed / 294 suites.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VCNgGSt5qvcLxaeQqa7Zpj
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