- Load mail.* and SUMMER_MAIL__ overrides to pick memory, log, or smtp
- Log headers and text without credentials; SMTP uses explicit TLS and go-mail
- Reject CR/LF headers and invalid addresses and surface driver errors once
Co-authored-by: Cursor <cursoragent@cursor.com>
- Parse Winter INI + == Markdown templates and Goldmark HTML
- Memory driver stores rendered subject, text, and HTML
- Caller selects -en siblings by full dotted name
Co-authored-by: Cursor <cursoragent@cursor.com>