- Replace node type badge with icon in admin tag editor
- Add Edit/Add Tags button on node detail page (when admin enabled and authenticated)
- Remove automatic seed container startup to prevent overwriting user changes
- Remove unused 'coordinate' value type from node tags (only string, number, boolean remain)
The web admin interface needs write permissions to create, update,
move, and delete node tags. Changed to use API_ADMIN_KEY with
fallback to API_READ_KEY if admin key is not configured.