feat: factor refactor D4 — FactorService + decision-view materializer, saturation-correct pooled fills - #93

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feat/factor-refactor-d4-service

Jul 25, 2026

Commits on Jul 24, 2026

feat(factors): pre-register lookback_depth on the closing factors (D4)
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feat(factors): decision-view materializer — the one vectorized engine (D4)
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feat(factors): FactorService — DecisionPoint + read-through cross_section/panel (D4)
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refactor(factors): home the processing orchestration in factors/process (D4 R9)
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test(factors): hot-path timing smoke — shared vs naive minute read (D4 R20/§八)
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fix(factors): saturation-expanding load for valid-day-pooled factors (D4 review HIGH)
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Commits on Jul 25, 2026