Added
- Calendar: respond to invites via
gog calendar respond <calendarId> <eventId> --status accepted|declined|tentative(optional--send-updates). - People:
gog people me(quick “me card” /people/me). - Gmail: message get via
gog gmail get <messageId> [--format full|metadata|raw]. - Gmail: download a single attachment via
gog gmail attachment <messageId> <attachmentId> [--out PATH].