loginCommand now takes its login function and prompts from CliContext;
bin/quak.ts passes Client.login and the terminal prompts, so behaviour is
unchanged. Tests cover a login from QUAK_EMAIL/QUAK_PASSWORD with no
prompt, the TOTP prompt, a failed login, and the saved session's modes,
and show that --exif and --all each turn on EXIF extraction. Also rewraps
the header comment of src/cli-commands.ts.
Model: opus-5-5
sneak