v0.2.22

Summary

• Corrected classic eager StickyAssignor handling for same-generation duplicate previous claims.
• Aligned mixed-topic assignment ordering with Kafka's candidate-count behavior.
• Added regression coverage for duplicate claims and mixed-topic subscriptions.

Compatibility evidence

• Complete 17-job Live Kafka Smoke matrix passed in run 31668518895.
• Kafka 3.7.2 three-broker sticky group path passed multi-member transfer, transient-member rollback, and member-loss recovery.
• kafrust-protocol 0.2.22 and kafrust 0.2.22 published to crates.io.
• Fresh external project compiled kafrust 0.2.22 with ls.
• Both docs.rs pages returned HTTP 200.

Known limits

• Eager sticky behavior is live-qualified for the documented workflows; exact parity for every Kafka assignor edge case and rack-aware workload remains future work.
• The project remains alpha and is not yet a drop-in replacement for rust-rdkafka or Kafka's full client surface.