R1 cleanup: collAnon and dead code gone, no IndexedDB, honest PWA files

Starts the completion program (SocialPub docs/ROADMAP.md, "Owner decisions on finishing everything", 2026-10-17).

- The localizer's namespace is decePubClient.Services; collAnon is gone from the repo.
- Dead code: PagesBase, VConstants, SettingsOptions, ViewLanguage, unused APIs routes, InstanceService.Self,
  RequestStats.LastOf/AverageMs, PostAnon/DeleteTotallyAnon, unused AppStatusService methods and their main.js helpers
  (the app badge stays for Web Push), ExtensionMethods/SUtility leftovers (Markdig and BlazorZXingJs packages go),
  unused PublicCacheData/PageSettings/AppConfiguration fields, commented-out code.
- The client log in IndexedDB, which nothing ever read, goes with the whole IndexedDB layer (DnetIndexedDb, IStorage):
  logs go to the browser console; main.js deletes the old "data" database once.
- The solution names the real ClientModels project. Unused vendor assets (fontawesome, solid, open-iconic, rxjs) go.
- robots.txt disallows everything; manifest.json and index.html say decePub; the service worker's cache name follows
  each publish's assets version, so old caches are purged.
- MessageType is Visibility (member names kept: they are resx keys); ExpandMessage.razor is Thread.razor (same route).
- i18n: dead keys removed, Italian "camera" is "punto di vista", DInputBase/DCalendar validation messages come from
  ErrorMessages, DataTransfer's spinner has its label.
- CLAUDE.md follows: client storage, JS interop, PWA, the D fields' messages.

Verified: dotnet build decePubClient.csproj and decePubClient.sln -c Release (0 errors, no new warnings); a Pasture
publish served by the pasture's decepub peer.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WpVCoDeM1qUTRp4fXQdfof

Helpers/SUtility.cs

@@ -1,6 +1,5 @@
 using System.Net;
 using System.Net.Http.Json;
-using System.Net.Mail;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using System.Text.Json.Serialization.Metadata;
@@ -108,58 +107,5 @@ namespace decePubClient.Helpers
 
 		public static T IfTrueThen<T>(bool conditionIsTrue, T ifTrue, T ifFalse = default) =>
 			conditionIsTrue ? ifTrue : ifFalse;
-
-		public static bool TimeBetween(this DateTime datetime, TimeSpan start, TimeSpan end)
-		{
-			// convert datetime to a TimeSpan
-			var now = datetime.TimeOfDay;
-			// see if start comes before end
-			if (start < end)
-				return start <= now && now <= end;
-			// start is after end, so do the inverse comparison
-			return !(end < now && now < start);
-		}
-
-		public static string GetFileIcon(string fileName)
-		{
-			switch (Path.GetExtension(fileName))
-			{
-				case ".odp":
-				case ".pptx":
-					return "file-powerpoint";
-
-				case ".ods":
-				case ".xlsx":
-					return "file-excel";
-
-				case ".odt":
-				case ".docx":
-					return "file-word";
-
-				case ".pdf":
-					return "file-pdf";
-
-				case ".jpg":
-				case ".jpeg":
-				case ".png":
-					return "file-image";
-
-				default:
-					return "file";
-			}
-		}
-
-		public static bool IsValidEmail(string email)
-		{
-			try
-			{
-				var addr = new MailAddress(email);
-				return addr.Address == email;
-			}
-			catch
-			{
-				return false;
-			}
-		}
 	}
 }