fix(ecstore): fence deletes against decommission commits (#6363)

* fix(ecstore): fence deletes against decommission commits

* fix(ecstore): preserve decommission target write locks

* fix(ecstore): preserve delete markers during source cleanup

* fix(ecstore): route batch delete markers to active pools

* fix(ecstore): preserve batch delete pool errors

* fix(ecstore): retain source-set lock during cleanup

* test(ecstore): exercise decommission delete fences

* test(ecstore): finish decommission delete fence scenario

* fix(ecstore): reuse fixed fence for reverse decommission

* fix(ecstore): fence decommission commit loss

* fix(ecstore): annotate batch delete fallback

* test(ecstore): fix decommission fence fixtures

* fix(ecstore): unblock decommission delete fences

* fix(ecstore): preserve distributed decommission set locks

* fix(ecstore): match decommission lock backend domain

* test(ecstore): align decommission fence barriers

* fix(ecstore): satisfy delete fence lint checks

* fix(rebalance): preserve access-denied delete errors

crates/ecstore/src/services/rebalance/entry.rs

@@ -334,6 +334,7 @@ impl ECStore {
                             lifecycle_guard: bucket_incarnation_fence
                                 .as_ref()
                                 .and_then(|guard| guard.namespace_lock_guard()),
+                            ..Default::default()
                         },
                         "rebalance",
                     ),