feat(drive): remove all owner_id from {File,Folder}Dto

src/interfaces/nextcloud/report_handler.rs

@@ -340,7 +340,6 @@ fn file_dto_from_search(fr: &crate::application::dtos::search_dto::SearchFileRes
             .into(),
         category: category_for(&fr.name, &fr.mime_type).to_string().into(),
         size_formatted: format_file_size(fr.size),
-        owner_id: None,
         sort_date: None,
         content_hash: fr.blob_hash.clone(),
         etag,
@@ -360,7 +359,6 @@ fn folder_dto_from_search(
         name: sr.name.clone(),
         path: sr.path.clone(),
         parent_id: sr.parent_id.clone(),
-        owner_id: None,
         drive_id: sr.drive_id,
         created_at: sr.created_at,
         modified_at: sr.modified_at,

src/interfaces/nextcloud/webdav_handler.rs

@@ -1811,7 +1811,6 @@ mod tests {
             name: path.rsplit('/').next().unwrap_or("").to_string(),
             path: path.to_string(),
             parent_id: None,
-            owner_id: None,
             // Test stub — path mapper doesn't read drive_id.
             drive_id: uuid::Uuid::nil(),
             created_at: 0,