get_x_storage_secure 1.0.0

Keep secrets in the operating system's own store - AndroidKeyStore, DPAPI, the Keychain, libsecret - with a key/value layer over them.

1.0.0

• SecretVault: one OS-protected secret per alias, in AndroidKeyStore, Windows DPAPI, the iOS/macOS Keychain, or libsecret on Linux. Reading an absent or unrecoverable secret answers null; anything else is a typed exception that carries an OS code and never a secret.
• SecureStorage: the key/value layer apps expect on top of it — any key text, values longer than one OS write, getKeys/readAll/deleteAll through an encrypted index, and a change stream that names the key but not the value.
• VaultOptions per platform: secret size cap, Keychain accessibility, iCloud sync and access groups on Apple, biometric or device-credential gating on Android and Apple, blob directory on Windows.
• Nothing native happens at import or construction time, and every call runs on its own isolate, so a slow keystore never blocks the UI.
• example/ drives both layers from one two-tab app, and one behavioural contract per layer (test/vault_contract.dart, test/secure_storage_contract.dart) runs against it on a real device — 11 and 17 cases on Android and on Windows DPAPI, plus a memory vault in flutter test so chunking and the index stay covered with no keyring present.
• Not covered by this release: the iOS/macOS and Linux backends are written and analyzer-clean but have never been run, the authentication gates are untested on hardware, and the web throws UnsupportedError because browsers expose no OS keystore.