chore: Extract FilePartitionPlanner to decouple CometNativeScanExec from CometScanExec#3729

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andygrove wants to merge 3 commits intoapache:mainfrom

andygrove:refactor/file-partition-planner

Commits on Mar 18, 2026

refactor: extract FilePartitionPlanner and ShimFilePartitionPlanner traits
andygrove
committed
refactor: delegate partition logic from CometScanExec to FilePartitionPlanner
andygrove
committed
style: fix scalastyle and spotless formatting
andygrove
committed