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public static final String SHARE_SNAPSHOT_UPDATE_RECORDS_PER_SNAPSHOT_CONFIG = "share.snapshot.update.records.per.snapshot";

4 . No other public surface changes

- No RPC schema changes. `WriteShareGroupState` is unchanged; the per-group override is read from `GroupConfigManager` server-side, not transmitted over the wire.
- No new metrics in v1. (Optional follow-up: a `share-snapshot-write-rate` metric tagged by group — out of scope.)
- No CLI changes; `kafka-configs.sh --entity-type groups --entity-name <gid> --alter --add-config share.snapshot.update.records.per.snapshot=N` works through the existing GROUP entity-type plumbing.

Proposed Changes

Describe the new thing you want to do in appropriate detail. This may be fairly extensive and have large subsections of its own. Or it may be a few sentences. Use judgement based on the scope of the change.

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