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houseme
c428c6615e
Split the 3655-line data_usage_define.rs (59% inline tests) into a canonical foo.rs + foo/ module tree with zero behavior change: - data_usage_define.rs (~950): cache constants and revision helpers, the data-usage tree types, DataUsageCacheInfo with its hand-written Serialize, the in-memory tree operations, dui, and marshal/unmarshal - data_usage_define/persistence.rs (~580): the load/backup/restore ladder (load, try_load_inner, revision_for_path) and the CAS save path with its retry policy and save metrics - data_usage_define/tests.rs (~2155): the inline test module as a child module All module paths are unchanged (the lib.rs data_usage_define::* glob re-export and every crate::data_usage_define:: consumer resolve as before). The hand-written map-encoded Serialize for DataUsageCacheInfo is moved byte-for-byte per the AGENTS.md cross-cutting invariant; on-disk names and the cache key format const stay in the root. Four persistence helpers used by tests 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>