A login's storage is counted, and can have a quota

MediaAttachment.Size was stored and never summed: nobody, the administrator included, could tell what media took,
and nothing bounded it. Counted.Media and MediaOfRoot sum what is kept (not trashed). A login sees what its personas'
uploads and pictures take at /clientapi/user/storage (ViewStorage), with its quota when the server sets one;
Media:QuotaBytesPerRoot (0, no quota, by default) refuses an upload or a picture over it with 422, whichever persona
sends it; the statistics overview gains the media totals, the proxy cache and the trash (ViewMediaTotals). Tests: a
login's storage counts what its personas keep and forgets what is trashed; two uploads from two personas of one login
are refused together past the quota.

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

PrivaPub/Controllers/ClientToServer/RootUserController.cs

@@ -328,6 +328,15 @@ namespace PrivaPub.Controllers.ClientToServer
 		//	}
 		//}
 
+		// what the login's media take, every persona's, and its quota when the server sets one
+		[HttpGet, Route("/clientapi/user/storage"), Authorize(Policy = Policies.IsUser)]
+		public async Task<IActionResult> GetStorage([FromServices] Microsoft.Extensions.Options.IOptionsMonitor<Domain.Media.MediaOptions> media, CancellationToken token)
+		{
+			var (bytes, files) = await Domain.Privacy.Counted.MediaOfRoot(User.GetUserId(), token);
+			var quota = media.CurrentValue.QuotaBytesPerRoot;
+			return Ok(new PrivaPub.ClientModels.User.ViewStorage { MediaBytes = bytes, MediaFiles = files, QuotaBytes = quota > 0 ? quota : null });
+		}
+
 		[HttpGet, Route("/clientapi/user/settings"), Authorize(Policy = Policies.IsUser)]
 		public async Task<IActionResult> GetUserSettings()
 		{