fix(scanner): fence movement generation publication (#6461)

* feat(scanner): add movement generation fencing

* fix(scanner): prioritize unverified cycle deferral

* feat(ecstore): add scanner publication lease fence

* feat(rpc): add scanner publication lease protocol

* feat(scanner): hold remote leases through usage publish

* test(scanner): cover publication lease fencing

* fix(scanner): fence remote leases across restart and delay

* feat(rpc): fence scanner publication rename writes

* fix(scanner): fence observed cleanup deletes

* fix(proto): qualify lease release test types

* fix(scanner): pin movement notifications

* fix(scanner): clean publication imports

* fix(ecstore): satisfy scanner fence clippy

* refactor(scanner): group wait and publication options

* fix(scanner): satisfy final lint and facade guards

* fix(rpc): resolve facade export conflicts

* fix(ci): remove unused decommission and healing facades

* fix(ci): cfg-gate test-only usage overlay import

* fix(scanner): wake on remote scanner restart

crates/ecstore/src/object_api/types.rs

@@ -446,6 +446,11 @@ pub struct ObjectOptions {
     pub tier_delete_journal_api: Option<Arc<crate::store::ECStore>>,
 }
 
+/// Transient scanner-only carrier for target-side publication lease tokens.
+/// SetDisks consumes and removes this key before constructing durable
+/// FileInfo metadata; it must never appear in an S3-visible object.
+pub const SCANNER_PUBLICATION_LEASE_FENCE_METADATA_KEY: &str = "x-rustfs-internal-scanner-publication-lease-fence-v1";
+
 impl ObjectOptions {
     pub fn set_quota_admission(&mut self, current_usage: u64, quota_limit: u64) -> bool {
         self.quota_admission = (current_usage <= quota_limit).then_some(QuotaAdmission {