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d60cd9053a
Consolidate duplicated meta-info and clear logic into BaseStorage. Promote system file accessors and DataPage-based flows into IStorageAccessor. Use Long for vault disk space to support cloud byte counts. Combine local and remote storages in VaultsManager so UnlockManager sees all backends. Yandex Disk REST integration (phase B) is deferred to a follow-up change. Co-authored-by: Cursor <cursoragent@cursor.com>