The Linux store is built on `keyring::Entry`, whose set_password,
get_password and delete_credential are inherent methods. The Android one
is built on `keyring_core::Entry`, where they are inherent too -- so the
`CredentialApi` import that each of its three methods opened with was
doing nothing, and said so on every Android build.
`CredentialStoreApi` a few lines above is a different matter and stays:
`build` really does come from that trait.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>