Reports and statistics answer in ClientModels' shapes

The moderators' reports and the admin statistics (overview, hosts,
crawler) were anonymous objects, so a client could read them only as loose
JSON. They are now ViewReport, ViewStatisticsOverview, ViewHostsPage and
ViewCrawler in PrivaPub.ClientModels, with the same JSON as before, for
decePub's Administration page.

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

PrivaPub.ClientModels/Admin/ViewStatistics.cs

@@ -0,0 +1,89 @@
+namespace PrivaPub.ClientModels.Admin
+{
+	// /clientapi/admin/statistics/overview: the last days' federation at a glance; counters keyed as the ledger keys them
+	public class ViewStatisticsOverview
+	{
+		public int Days { get; set; }
+		public Dictionary<string, long> Channels { get; set; } = new();
+		public Dictionary<string, long> Inbound { get; set; } = new();
+		public Dictionary<string, long> Outbound { get; set; } = new();
+		public double? DeliverySuccess { get; set; }
+		public ViewLatency DeliveryLatencyMs { get; set; } = new();
+		public ViewHostCounts Hosts { get; set; } = new();
+		public int Accounts { get; set; }
+		public ViewLedgerCounts Ledger { get; set; } = new();
+	}
+
+	public class ViewLatency
+	{
+		public int? P50 { get; set; }
+		public int? P95 { get; set; }
+	}
+
+	public class ViewHostCounts
+	{
+		public int Active { get; set; }
+		public long Known { get; set; }
+	}
+
+	public class ViewLedgerCounts
+	{
+		public long Written { get; set; }
+		public long Dropped { get; set; }
+		public long Failed { get; set; }
+	}
+
+	// /clientapi/admin/statistics/hosts: one page of the servers we exchanged with
+	public class ViewHostsPage
+	{
+		public int Total { get; set; }
+		public int Page { get; set; }
+		public List<ViewHostRow> Hosts { get; set; } = new();
+		public string Attribution { get; set; }
+	}
+
+	public class ViewHostRow
+	{
+		public string Host { get; set; }
+		public string Software { get; set; }
+		public string Version { get; set; }
+		public long In { get; set; }
+		public long Out { get; set; }
+		public long Refused { get; set; }
+		public long Failures { get; set; }
+		public int? LatencyP50 { get; set; }
+		public int Accounts { get; set; }
+		public DateTime? DescribedAt { get; set; }
+		public ViewHostDelivery Delivery { get; set; }
+	}
+
+	public class ViewHostDelivery
+	{
+		public int ConsecutiveFailures { get; set; }
+		public DateTime? UnavailableUntil { get; set; }
+		public DateTime? LastSuccessAt { get; set; }
+		public DateTime? LastFailureAt { get; set; }
+	}
+
+	// /clientapi/admin/statistics/crawler: how far the crawler got
+	public class ViewCrawler
+	{
+		public bool Enabled { get; set; }
+		public long Touched { get; set; }
+		public long Crawled { get; set; }
+		public long Due { get; set; }
+		public long RobotsDisallowed { get; set; }
+		public List<ViewCrawledHost> Recent { get; set; } = new();
+	}
+
+	public class ViewCrawledHost
+	{
+		public string Host { get; set; }
+		public string Seen { get; set; }
+		public DateTime? LastCrawledAt { get; set; }
+		public int? PeersCount { get; set; }
+		public bool? RobotsDisallowed { get; set; }
+		public string CrawlError { get; set; }
+		public string Software { get; set; }
+	}
+}