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be1ba29f4d
Add Yandex Disk API (Retrofit + OkHttp), per-vault repository with DB-backed OAuth token, YandexStorage/YandexStorageAccessor under app:/<uuid>, and a real YandexVault bootstrap (disk quota, list storages, create/remove). Expose vault and storage availability: vault is reachable after diskInfo; each storage combines vault reachability with local init readiness. Map 401 to YandexDiskAuthException and mark the vault unavailable. Add YandexAccountDao.getByVaultUuid for fresh tokens on each request. Co-authored-by: Cursor <cursoragent@cursor.com>