fix(ecstore): handle metadata-less bucket residue (#6591)

* fix(ecstore): handle metadata-less bucket residue

Diagnose metadata-less on-disk residue before non-force DeleteBucket reaches physical deletion, and keep scanner-discovered metadata-missing objects on a non-destructive heal path.

Add explicit heal --remove cleanup for unversioned metadata-less data directories, using the existing data-dir delete primitive and fail-closed shape checks so pre-commit or unknown residue is preserved.

Co-Authored-By: heihutu <heihutu@gmail.com>

* fix(connect): adapt offline array validator

Wrap the filesystem summary validator in a closure so Option::is_some_and can pass the concrete array reference accepted by serde_json::Value::as_array.

Co-Authored-By: heihutu <heihutu@gmail.com>

* fix(connect): remove redundant offline test clones

Move the temporary path into the swap closure after deriving the output path, keeping clippy's redundant-clone lint clean for offline bundle tests.

Co-Authored-By: heihutu <heihutu@gmail.com>

---------

Co-authored-by: heihutu <heihutu@gmail.com>

crates/scanner/src/scanner_folder.rs

@@ -1648,7 +1648,7 @@ impl FolderScanner {
                             bucket.clone(),
                             Some(object.clone()),
                             None,
-                            build_object_heal_request(bucket, object, None, self.scan_mode, HealChannelPriority::High),
+                            build_non_destructive_object_heal_request(bucket, object, self.scan_mode, HealChannelPriority::High),
                         )
                         .await?;
                     }