The "Tip the Mapper" card now links the avatar/name to the mapper's profile
(/{npub} via the NIP-19 router) and adds a "Message Mapper" button that opens
an encrypted DM (/messages/{npub}). Makes it easy to contact whoever added a
spot — e.g. to ask them to add photos to a photoless submission. The message
button is hidden when you're viewing your own spot.
Co-authored-by: shakespeare.diy <assistant@shakespeare.diy>
