archive old experiments and publish swe series

experiments/baseline-swebench/assets/README.md

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+# Vendored grader dependency
+
+`flit_core-3.7.1-py3-none-any.whl` is the PyPI wheel for Flit Core 3.7.1, vendored so the Sphinx grader can install its build backend without network access.
+
+Source: <https://github.com/pypa/flit/tree/3.7.1>
+
+License: BSD-3-Clause
+
+SHA-256: `e454fdbf68c7036e1c7435ec7479383f9d9a1650ca5b304feb184eba1efcdcef`