Pixelfed places: a remote post's own place, shown and never federated again

A Note's `location` that is a Place with coordinates (Pixelfed sends
them as strings) is kept in the new Post.Place and shown as
Status.privapub.place {name, latitude, longitude, country}; an edit
replaces it. An Event's location stays its own `places`, and nothing
renders a place back out. Closes the INTEROP P2 Pixelfed location gap
and the ROADMAP long-tail item.

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

PrivaPub/Api/Mastodon/Entities/Entities.cs

@@ -1,4 +1,4 @@
-namespace PrivaPub.Api.Mastodon.Entities
+namespace PrivaPub.Api.Mastodon.Entities
 {
 	public class Account
 	{
@@ -73,6 +73,7 @@ namespace PrivaPub.Api.Mastodon.Entities
 		public PrivaPubVideo Video { get; set; }
 		public PrivaPubAudio Audio { get; set; }
 		public PrivaPubEvent Event { get; set; }
+		public PrivaPubPlace Place { get; set; }//a remote post's own place (Pixelfed), shown only
 		public PrivaPubVotes Votes { get; set; } = new();
 	}
 
@@ -151,6 +152,7 @@ namespace PrivaPub.Api.Mastodon.Entities
 	{
 		public string Name { get; set; }
 		public string Address { get; set; }
+		public string Country { get; set; }//a post's own place only
 		public double? Latitude { get; set; }
 		public double? Longitude { get; set; }
 		public string Url { get; set; }

PrivaPub/Api/Mastodon/Mappers/MastodonMapper.cs

@@ -1,4 +1,4 @@
-using MongoDB.Entities;
+using MongoDB.Entities;
 
 using PrivaPub.Api.Mastodon.Entities;
 using PrivaPub.Api.Mastodon.Infrastructure;
@@ -457,6 +457,10 @@ namespace PrivaPub.Api.Mastodon.Mappers
 				Status = post.Event.Status,
 				Category = post.Event.Category
 			},
+			Place = post.Place == default ? default : new PrivaPubPlace
+			{
+				Name = post.Place.Name, Latitude = post.Place.Latitude, Longitude = post.Place.Longitude, Country = post.Place.Country
+			},
 			Votes = new PrivaPubVotes { Up = post.FavouritesCount, Down = post.DownvotesCount }
 		};