GeoJSON had France, Norway, and Kosovo sharing ISO code -99, causing hover
on any one to highlight all three. Fix ISO codes and switch hover filter
to unique name property. Add data validation tests.
Click empty map area to detect country via Nominatim reverse geocoding,
highlight it with GeoJSON boundaries, and show an AI-generated intel
brief (Groq, Redis-cached 2h) with CII score, active signals, and
contextual news headlines.
