{Core} Use commandIndex caching to improve performance of top-level and module-level `help` commands#32637

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DanielMicrosoft:35870312-top-level-help-perf

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Commits on Jan 22, 2026

fix: correct operator precedence in help fast path and remove no-args path
DanielMicrosoft
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Revert "feature: extend concept to nested commands"
DanielMicrosoft
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