bedrock-kv / bedrock / 44532d934f5844dced4cfe9c8517ff977a4ddd44-PR-65

Pull #65

github

Add efficient snapshot I/O (iodata upload, split_in_place download)

Upload optimization: Pass data+idx as iodata directly to Snapshot.write,
eliminating intermediate bundle file creation and duplicate reads.

Download optimization: Add split_in_place/3 which truncates the bundle
in place and renames to data file (zero-copy for data portion).
Only the index is read and written to a new file.

- ObjectStorage.data type now accepts iodata
- Snapshot.write/3 accepts iodata (removes binary guard)
- Add SnapshotBundle.split_in_place/3 for efficient downloads
- Add find_index_boundary_from_file/2 to avoid reading full bundle
- Simplify Logic.maybe_upload_snapshot to use iodata directly

620 of 746 new or added lines in 38 files covered. (83.11%)

4775 of 7158 relevant lines covered (66.71%)

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