feat(spr,drift): exact directional EW scorer — spr_search default + drift/sector opt-in + findings#273

Merged

ms609 merged 12 commits into

claude/happy-jennings-e7a165

Jul 16, 2026

Commits on Jul 13, 2026

docs(profiling): settle union-of-finals exactness gate (empirical)

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Commits on Jul 14, 2026

feat(drift,spr): opt-in exact directional EW scorer + scan-error census

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ci(hamilton): drift-exactness matched-wall gate build + array scripts

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ci(hamilton): resolve gate deps from shared lib (R_LIBS_USER)

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docs(drift): close matched-wall gate with 30-seed Hamilton result

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docs(drift): soften saturated-tail claim (nCycles-cap censoring)

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docs(drift): resolve saturated tail — crossover is real (nc1024 check)

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feat(bench): sector-godrift isolation gate harness + Hamilton array (route B)

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feat(spr): make exact directional the default EW scorer for spr_search

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feat(bench): route-3 marginal-value experiment (drift vs ratchet at matched wall)

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feat(bench): route-3 follow-ons — +replicate gap-closer + training-corpus recipe test

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docs(drift): route-3 recipe verdict — NO-GO (marginal win, ensemble-redundant)

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