{site} and {site_name} everywhere; a state mail adds {self_link} (the
submitter's own page, when their record's state allows a move there),
{desk_link} and {link}, which picks by who the mail is to. gullberg's
{link} mails went out blank until now. Documented in docs/mail.md.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MznPTC31w5mSUK4XMehcpi
