Split the bridge into a tutabridge-core crate, a Tauri v2 desktop app
(src-tauri) and a React/TS UI (ui), keeping the CLI entrypoint at the
workspace root.
Add encrypted local storage (SQLCipher metadata index + encrypted .eml
files) so mail persists across launches and only the delta is fetched.
Wire the bridge to the Tuta Rust SDK via the tuta-repo submodule
(batch loading, MailDetailsBlob reading, interactive 2FA login).
Implement SMTP sending: build the draft and send it through Tuta's
DraftService/SendDraftService, mirroring the web client (body in
compressedBodyText, non-empty sender/recipient names, populated
SendDraftParameters). Add unit tests for the draft/send payload building.
Local bridge that exposes Tuta encrypted email via standard
IMAP/SMTP protocols for use with Thunderbird and other clients.
Features:
- IMAP server with TLS (STARTTLS self-signed cert)
- SMTP server for sending mail via Tuta
- Session persistence via macOS Keychain
- Mail body decryption including LZ4-compressed blobs
- Blob storage access (BlobAccessTokenService + blob server)
- RFC 2822 message formatting
- Interactive first-run configuration
