Behavior-unchanged decomposition of the 2757-line `persistence.rs` god-file
into a `persistence/` module, one file per concern. Everything is re-exported
via glob (`pub use <submodule>::*`) so the `crate::persistence::*` public
surface is byte-for-byte identical and no call site changes.
Layout:
- mod.rs shared fs/io helpers (data_dir, ensure_dir, atomic_write,
read_or_default) + the two cross-cutting consts + re-exports
- paths.rs models / recordings / Foundry roots + migration helpers
- credentials.rs OS credential vault (CredsRoot model, keyring/android/legacy,
CredentialAccount, CredentialsSnapshot, CredentialsVault)
- history.rs HistoryStore
- preferences.rs read_preferences + PreferencesStore
- style_pack.rs StylePackStore + ZIP import/export + prefs reconciliation
- dictionary.rs DictionaryStore + vocab presets
- correction.rs CorrectionRuleStore
Pure move + re-export: no logic, signatures, public API, or UI changed. Unit
tests moved next to the code they now cover. Shared helpers stay private in
`mod.rs` (parent items are visible to child modules), and glob re-exports keep
cfg-gated items (Android/Windows) resolution-safe across every target —
avoiding the explicit-`pub use` breakage seen in the earlier types.rs split.
Verified on macOS: cargo fmt/check/clippy clean (no new persistence warnings),
446 lib tests green. Android/Windows cfg paths verified by CI.
Part of #697.
Co-authored-by: sim <sim@local>
