Server locations: no user threshold

The public projection of a server's place showed only the country for
servers reporting fewer than 10 users. The owner never decided that
threshold: every located server now shows its city, coordinates (0.1°)
and network, and a CDN-fronted one still shows only its CDN, since the
address reached is the CDN's edge. Statistics:PublicCityMinUsers is
gone; the ROADMAP decision on server locations, CLAUDE.md and the
/stargazing explainer are corrected.

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

PrivaPub/Domain/Statistics/SelfLocation.cs

@@ -1,4 +1,4 @@
-using Microsoft.Extensions.Options;
+using Microsoft.Extensions.Options;
 
 using PrivaPub.Infrastructure.Geo;
 using PrivaPub.Infrastructure.Statistics;
@@ -12,8 +12,8 @@ namespace PrivaPub.Domain.Statistics
 {
 	public interface ISelfLocation
 	{
-		//where this server is, or default when it cannot tell; Configured when the owner set it (Statistics:Geo:Self)
-		Task<(InstanceGeo Geo, bool Configured)> Get(CancellationToken token);
+		//where this server is, or default when it cannot tell; Source is "configured" when the owner set it (Statistics:Geo:Self)
+		Task<InstanceGeo> Get(CancellationToken token);
 	}
 
 	// This server's own place, for the instance API (the client's globe draws every server from it). The owner may set it,
@@ -40,20 +40,20 @@ namespace PrivaPub.Domain.Statistics
 			_logger = logger;
 		}
 
-		public async Task<(InstanceGeo Geo, bool Configured)> Get(CancellationToken token)
+		public async Task<InstanceGeo> Get(CancellationToken token)
 		{
 			if (_options.CurrentValue.Geo.Self is { Latitude: { } latitude, Longitude: { } longitude } self)
-				return (new InstanceGeo
+				return new InstanceGeo
 				{
 					Country = self.Country,
 					City = self.City,
 					Latitude = Math.Round(latitude, 1),
 					Longitude = Math.Round(longitude, 1),
 					Source = "configured"
-				}, true);
+				};
 
 			if (DateTime.UtcNow - _locatedAt < Lifetime)
-				return (_located, false);
+				return _located;
 			await _gate.WaitAsync(token);
 			try
 			{
@@ -62,7 +62,7 @@ namespace PrivaPub.Domain.Statistics
 					_located = await Locate(token);
 					_locatedAt = DateTime.UtcNow;
 				}
-				return (_located, false);
+				return _located;
 			}
 			finally
 			{