fix(ecstore): harden issue3031 multipart validation path (#3106)

* 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

crates/ecstore/src/set_disk/write.rs

@@ -262,6 +262,11 @@ impl SetDisks {
         let dst_bucket = Arc::new(dst_bucket.to_string());
         let dst_object = Arc::new(dst_object.to_string());
 
+        // Match MinIO's multipart overwrite semantics: clear any stale destination
+        // part payload and metadata before the new per-disk rename fan-out begins.
+        self.cleanup_multipart_path(&[dst_object.to_string(), format!("{dst_object}.meta")])
+            .await;
+
         let mut errs = Vec::with_capacity(disks.len());
 
         let futures = disks.iter().map(|disk| {