Passwords are no longer stored in config.toml. Instead:
- New setup wizard (--configure) prompts for credentials on first run
and stores them in the OS keychain (macOS Keychain, GNOME Keyring /
KWallet on Linux, Windows Credential Manager)
- Env-var fallback: TUIMAIL_<KEY> for headless environments
- ProtonMail session token moves from session.json to the keychain
- Config file path moves to {config_dir}/tuimail/config.toml
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Add smtp.rs with send_email using lettre; supports none/starttls/smtps
- Replace use_tls: bool with TlsMode enum in SmtpConfig for explicit port 465 (SMTPS) support
- Add SMTP_IO_TIMEOUT (15s) for socket I/O and SMTP_WALL_TIMEOUT (30s) covering DNS + connect
- Spawn SMTP send on a dedicated thread so the IMAP worker thread is never blocked
- Update config.toml.example with tls_mode documentation
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
