feat(update): add MergingSnapshotUpdate#682
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Abstract base for merge-based snapshot operations (MergeAppend, OverwriteFiles, RowDelta, etc.), implementing the filter → write → merge pipeline consistent with Java's MergingSnapshotProducer. Also fixes SnapshotSummaryBuilder manifest count fields and a use-after-free bug in SnapshotUpdate::DeleteFile.
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wgtmac
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May 27, 2026
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Abstract base for merge-based snapshot operations (MergeAppend, OverwriteFiles, RowDelta, etc.), implementing the filter → write → merge pipeline consistent with Java's MergingSnapshotProducer.
Also fixes SnapshotSummaryBuilder manifest count fields and a use-after-free bug in SnapshotUpdate::DeleteFile.