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Fix HP search PPOConfig clip parameter mismatch - #67
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Motivation
PPOConfigwith a non-existentclip_rangeargument whilePPOConfigdefinesclip_eps, which caused aTypeErrorduring CI.Description
utils/hp_search.pyto passclip_eps=params.get("clip_range", params.get("clip_eps", 0.2))so the code uses the correctPPOConfigfield while remaining backward-compatible with grids that useclip_range.Testing
pytest -q tests/test_hp_search.pywhich passed (7 passed), and ran the full suite withpytest -qwhich succeeded (143 passed, 1 skipped).Codex Task