12 lines
2.9 KiB
Markdown
12 lines
2.9 KiB
Markdown
# Quant OS factor diagnostics core increment
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Delivery: quant-os-factor-diagnostics-20261004; branch codex/quant-os-factor-diagnostics-20261004. Base is remote-confirmed origin/main 861c1e97a8bf1c3e962c4cd1ee88ef58e6b9ddd5. This is the independent core-repository increment consumed by the existing platform delivery/Draft #102, not a new platform branch or chat. Root in chat 01a0bc8f-dcaf-7452-9ab3-3215df6dfa97 is the sole core code/Git writer; reviewers are read-only. Primary, merged retrospective-v2 and old Alpha158 worktrees and their user files remain untouched.
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The fixed framework source is 16e96351fbc5bd5a918c7deff556490bbc44fb99. Valid source cleanliness/version evidence was reused; actual core feature/worktree router ranges and applicable AGENTS were read. Resume/review model-policy critical gpt-6-astra/xhigh passed; actual runtime remains unknown. The core has no stage ledger at its declared path, so no foreign stage state is borrowed. Lifecycle created this task after policy-check; old completed trees were retained for ignored local data, no old lease/state was rewritten. The new .venv was created through lifecycle run with the existing frozen lock and dev extras, offline from local caches.
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Scope is L3 mathematical behavior, pure memory/caller data. The new candidate module provides daily IC/RankIC summaries, keyed pooled correlation matrices and explicit-calendar forward-return labels. Production algorithm/source/PIT/execution qualifications remain unestablished and decision_eligible=false. Existing factor-library and governed factor-set contracts are unchanged. Reuse rationale and exact numerical/statistical assumptions are in docs/factor-diagnostics.md.
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Evidence so far: initial47 tests failed for the missing API; first implementation46 passed and one strict floating-zero assertion failed, corrected to a stated1e-15 tolerance without clipping values. A genuine extreme-rank scaling regression was reproduced and fixed by ranking original values. An affine-equivalent IC case reproduced enormous IR/t from rounding dispersion, fixed with the public32eps resolution policy. Independent reviewer found two representable-offset Pearson errors; both were reproduced and fixed by translate-before-scale. Latest54 new plus16 old tests=70 passed; final whole-core run1093 passed in12.82s with1166 existing pandas deprecation warnings. Targeted Ruff and final module-only mypy passed. Reviewer rechecked the two numeric fixes with tiny independent samples, no new blocker.
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This remains an unshipped candidate: document and full applicable checks, stable revision binding, platform thin consumption and synthetic UI evidence must be completed before final delivery gates. No source/provider/NAS query, production ETL, migration, release, deployment or trade has been authorized by this increment. Reuse this same lifecycle/branch/PR across further windows; do not treat a push as final delivery.
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