CDNs found by themselves, and servers followed through time

PrivaPub now finds CDNs three ways, best first: the address ranges the
CDNs publish (Cloudflare, Fastly, Amazon CloudFront, Bunny, Gcore,
Imperva), downloaded daily by CdnUpdater and kept in CdnRangeSet; the
CDN's fingerprint in the responses it already gets from a server
(EdgeHintsHandler on the federation client); and the networks that carry
only a CDN. The fixed ASN list is gone; ASNs shared with plain hosting
(AWS, DataPacket) no longer hide a server. A server's Geo records the
CDN, its domain and how it was found, and weekly snapshots now keep the
city and coordinates too.

Servers through time (ServerPlaces): /instances/:host/history lists a
server's weekly snapshots, a CDN-fronted server's geo names the CDN's
domain and where the server was before it (before_cdn), and
/api/privapub/v1/cdns and /cdns/:domain group servers by CDN with week
by week who joined and who left. Owner decisions recorded in ROADMAP.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw

PrivaPub/Models/Jobs/RemoteInstance.cs

@@ -1,4 +1,4 @@
-using MongoDB.Entities;
+using MongoDB.Entities;
 
 namespace PrivaPub.Models.Jobs
 {
@@ -57,6 +57,8 @@ namespace PrivaPub.Models.Jobs
 		public int? Asn { get; set; }
 		public string AsnOrg { get; set; }
 		public string Cdn { get; set; }//the CDN in front of it, whose edge address says nothing about where it runs
+		public string CdnDomain { get; set; }//the CDN's own domain, which groups its servers (CdnProvider.Key)
+		public string CdnSource { get; set; }//how the CDN was found: "ranges", "headers" or "asn"
 		public bool? Ipv6 { get; set; }
 		public string Source { get; set; }
 		public DateTime? LocatedAt { get; set; }
@@ -79,8 +81,13 @@ namespace PrivaPub.Models.Jobs
 		public string RegistrationMode { get; set; }
 		public List<string> Languages { get; set; }
 		public string Country { get; set; }
+		public string City { get; set; }
+		public double? Latitude { get; set; }
+		public double? Longitude { get; set; }
 		public int? Asn { get; set; }
 		public string Cdn { get; set; }
+		public string CdnDomain { get; set; }
+		public string CdnSource { get; set; }
 		public bool? Ipv6 { get; set; }
 	}
 }