The presentation layer was importing NearbyCafe directly from
infrastructure::foursquare, violating the dependency flow
(presentation -> application -> domain <- infrastructure). Introduce
NearbyCafeResult in domain:☕:nearby_cafes and update all
references.
- Add SearchLocation enum to support coordinates or named location
- Accept optional `near` query param as alternative to lat/lng
- Add city text input with checkbox toggle in cafes template
- Foursquare `near` param enables searching any city worldwide
- Replace osm.rs with foursquare.rs using Foursquare Places Search API
- Add isocountry crate for ISO 3166-1 country code to name conversion
- Override verbose country names (e.g. "United Kingdom" instead of
"United Kingdom of Great Britain and Northern Ireland")
- Add BREWLOG_FOURSQUARE_API_KEY env var for API authentication
- Update route handler, tests, and template to use Foursquare
- Modernise cafes template JS to ES6+ (const/let, arrow fns, template
literals)
