feat: add Quant OS A-share baseline

requirements/base.txt

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+# The portable quant60 core intentionally has no third-party runtime dependency.
+# Install the local package itself from the repository root:
+-e .

requirements/dev.txt

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+-r base.txt
+
+jsonschema==4.25.0
+pytest==8.4.1

requirements/jqdata.txt

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+-r base.txt
+
+# Official PyPI release verified 2026-07-26.
+jqdatasdk==1.9.8

requirements/qmt.txt

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+# Do not add xtquant/qmttools here.
+#
+# XtQuant is proprietary software distributed with the user's licensed
+# MiniQMT/QMT installation. It must not be downloaded from an unofficial
+# package index, copied from another account, or vendored into this repository.
+#
+# The external XtTrader/qmttools environment may install the portable project:
+-r base.txt

requirements/research-py312.txt

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+# Research environment contract: CPython 3.12.x only.
+# Verified together on macOS ARM64 with CPython 3.12.13 on 2026-07-26.
+# Pin the numerical/workflow stack because pyqlib's own requirements are
+# intentionally broad and otherwise resolve differently over time.
+# Verify with: python3.12 -c "import sys; assert sys.version_info[:2] == (3, 12)"
+-r base.txt
+
+numpy==2.5.1
+pandas==2.3.3
+scipy==1.18.0
+lightgbm==4.7.0
+cvxpy==1.9.2
+mlflow==3.14.0
+pyqlib==0.9.7