feat: cluster consumer coordinator routing with metadata-based leader discovery#12
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…ting and mermaid docs Signed-off-by: downfa11 <downfa11@naver.com>
…ersion conflict detection Signed-off-by: downfa11 <downfa11@naver.com>
…r support Signed-off-by: downfa11 <downfa11@naver.com>
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Summary
FIND_COORDINATORand routes group commands (JOIN_GROUP,HEARTBEAT,COMMIT, etc.) to the coordinator while routing data commands (CONSUME,STREAM) to partition leadersMETADATAcommand and connect directly to leader brokers. Consumer periodically refreshes leader info at metadataRefreshIntervalMs (default 30s)append(with optimistic version conflict detection),readStream,saveSnapshot,readSnapshot,streamVersion