* fix(ecstore): send valid ping body in remote locker
Build ping requests with a flatbuffer payload so health checks remain compatible with the ping response parser after restart.
* fix(bench): use multi-host warp target during failover
Normalize comma-separated warp host lists in run_object_batch_bench and let four-node failover bench pass BENCH_WARP_HOSTS so rolling restart does not pin load to a single restarting node.
* feat(health): add compat health probes with busy/KMS checks
- Add /health/live liveness probe endpoint
- Add busy protection (429) for readiness probes, gated by RUSTFS_HEALTH_COMPAT_BUSY_CHECK_ENABLE
- Add KMS readiness check for /health/ready, gated by RUSTFS_HEALTH_COMPAT_KMS_READY_CHECK_ENABLE
- Add lock quorum status caching with TTL to reduce RPC pressure
- Consolidate health response building into build_health_response_parts
- Register /health/live in console router and readiness gate
- Remove MinIO references from newly added health code
* fix(health): decouple kms readiness from lock quorum
* fix(ecstore): harden issue3031 multipart validation path
- clear stale multipart part destinations before rename fan-out
- add repeated part overwrite regression coverage
- reduce remote disk startup false-fault escalation to suspect-first
- refine remote locker diagnostics and lower scanner leader-lock log noise
- add a dedicated 4-node issue3031 docker validation script
* refactor(admin): inline console version json macro
- drop the unused serde_json::json import in admin console
- call serde_json::json! inline in version_handler
- keep the console version response behavior unchanged
* fix(remote-disk): recover suspect health on probe success
- record probe success during remote disk health checks so suspect drives recover
- use async_with_vars for the remote disk health probe test
- make the missing-listener test assert the state transition more robustly
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