sealed-env Studio

sealed-env Studio is a desktop companion for the sealed-env library:
cross-stack encrypted .env file management with Argon2id key derivation,
AES-256-GCM at rest, optional HMAC integrity, and TOTP-based unsealing
for production deploys.

Studio adds a passphrase-wrapped OS Credential Manager tier on top, so
the operator can save vault keys once and re-unlock with a passphrase +
6-digit authenticator code instead of pasting raw hex every time.

Cross-platform — Linux, macOS, Windows — and byte-compatible with the
Node.js + Java reference implementations.