fix(qlib): normalize MultiIndex levels before concat in factor_runner#1375

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JasonOA888 wants to merge 3 commits intomicrosoft:mainfrom

JasonOA888:fix/issue-678-multiindex-concat

Commits on Apr 1, 2026

fix(ui): store evolving code messages under short key for downstream consumers
JasonOA888
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fix: normalize Python-style booleans in LLM JSON responses
JasonOA888
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fix(qlib): normalize MultiIndex levels before concat in factor_runner
JasonOA888
committed