* chore(ecstore): add missing-shard first-scene diagnostics
Log rename_data quorum context behind RUSTFS_ISSUE3031_DIAG_ENABLE so partial-disk success can be correlated with later missing shard reads.
Also log put_object commit success and tmp cleanup boundaries to capture when successful quorum writes are followed by tmp_dir cleanup.
* chore(ecstore): add delete-objects lock batch diagnostics
Log DeleteObjects batch-lock request size, distributed lock quorum summary, and failed object keys behind RUSTFS_ISSUE3031_DIAG_ENABLE.
Include a Chinese operator checklist under docs/ that explains which logs to capture and how to interpret DeleteObjects lock_batch timeout incidents.
* chore: remove lock batch checklist from repo
Keep docs/issue-658-deleteobjects-lock-batch-checklist-zh.md only in the local checkout and drop it from the PR history.
