udisks2 connection and device listing errors now suggest checking the
service. Device-not-found errors suggest 'arca status' or 'arca init'.
Failed cryptsetup token unlock hints at missing FIDO2/TPM2 key.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Go CLI using cobra with mount, unmount, status, and init subcommands.
Unlocks via udisks2 D-Bus (passphrase/keyfile) or cryptsetup (FIDO2/TPM2)
with ordered method fallback. Includes NixOS-specific LD_LIBRARY_PATH
injection for systemd cryptsetup token plugins.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
