* refactor(scanner): split scanner_folder item actions and ledger
Split the 6345-line scanner_folder.rs (46% inline tests) into a
canonical scanner_folder.rs + scanner_folder/ module tree with zero
behavior change:
- scanner_folder.rs (~2280): scan constants, alert cooldowns, metric
accounting, resume ordering, tracing helpers, the FolderScanner
struct with failed-object bookkeeping and the scan_folder traversal,
and scan_data_folder
- scanner_folder/item_actions.rs (~890): CachedFolder, the get-size
failure policy, ScannerItem with apply_actions and the heal/ILM
admission helpers
- scanner_folder/ledger.rs (~280): the pending-scanner-heal ledger
methods and their entry helpers (record/prune/clear-for-repaired/
retry)
- scanner_folder/tests.rs (~2950): the inline test module as a child
module
The ScannerItem path used by scanner_io resolves through a root
re-export, and every other crate path is unchanged. Cross-module items
gain pub(super), whose scope equals the old single-module privacy
domain. Code is moved verbatim apart from those markers, per-module
import headers, and rustfmt re-wraps.
Co-Authored-By: heihutu <heihutu@gmail.com>
* fmt
---------
Co-authored-by: heihutu <heihutu@gmail.com>
Zhengchao An