v1.4.1 - Fix false Private Link detection

Fixed

• False Private Link detection: Route detection now uses IP-based checks instead of CNAME text matching. Microsoft's privatelink-global.wvd.microsoft.com is a standard public DNS zone, NOT actual Private Link.
• Correct AFD endpoint: Added afdfp-rdgateway-r1.wvd.microsoft.com as primary endpoint.

New

• AFD PoP detection via X-MSEdge-Ref: The AFD IP is anycast so GeoIP returned Redmond instead of the actual edge node. Now parses the X-MSEdge-Ref response header to detect the real AFD PoP code (e.g. LON = London, UK). The map badge shows the true edge location.
• 70+ AFD PoP code-to-city mappings based on Microsoft documentation