Stacks on #14. Mapped Discord admins can reply in a known thread; those messages become site posts and email the homeowner. The bot does not publish a site event, so the reply is not posted back to Discord. Photo attachments are ignored until the upload pipeline lands on this branch.
Reviewed-on: #15
Co-authored-by: codegirl-007 <s.raide@gmail.com>
codegirl007