v1.3.0 Restructure Saxonite workspace and upgrade to .NET 10 (#1)

Move Saxonite’s projects into a dedicated `Workspace` folder and align the solution with .NET 10 and the current Common workspace. Update encryption integration, test project structure and coverage, and repository guidance and upgrade notes.

- Relocate application and library projects while retaining Git rename history.
- Split tests into Admin, Online, and Shared projects; add representative behavioral and serialization tests.
- Update Common integration, application version, and repository documentation.

Application version: 1.3.0

Reviewed-on: #1
Co-authored-by: andy <andy@sarand.com>

Workspace/SaxoniteCoreWebOnline/Online/Controllers/ArticleController.cs

@@ -0,0 +1,60 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Logging;
+using Sarand.Net.Standard.Base.Bus;
+using Saxonite.Net.Core.Web.Base.App;
+using Saxonite.Net.Core.Web.Online.Models;
+using Saxonite.Net.Standard.Base.App;
+using Saxonite.Net.Standard.Base.Bus;
+using Saxonite.Net.Standard.Base.Mgr;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Saxonite.Net.Core.Web.Online.Controllers
+{
+	//=======================================================================
+	// Online Journalist Controller.
+	//=======================================================================
+	public partial class ArticleController : SaxController_Online
+	{
+		//-------------------------------------------------------------------
+		// Construction.
+		public ArticleController(SaxLocaliser localiser, ILogger<HomeController> logger) :
+			base(localiser, logger)
+		{
+		}
+
+		//-------------------------------------------------------------------
+		[HttpGet]
+		public IActionResult Index()
+		{
+			// Validate session.
+			if (!ValidUserSession)
+				return RedirectToAction("", "");
+
+			// User must either be a Journalist or have Article Admin rights with at least one organisation.
+			List<SaxAccountMgr.OrganisationIdName> organisations = AccountMgr.GetOrganisationsForAnyUserRole(SessionUserAccountId, new [] { Sax.OrganisationRole.Admin, Sax.OrganisationRole.ArticleAdmin });
+			if (organisations.Count < 1 && !UserIsJournalist)
+				return RedirectToAction("", "");
+
+			// Model.
+			Model_Article model = new Model_Article(Localiser);
+			model.UserCanAuthorOrganisationArticles = organisations.Count > 0;
+			model.UserCanAuthorJournalistArticles = UserIsJournalist;
+			if (organisations.Count > 0)
+			{
+				// Default filter to first organisation.
+				model.Filter.OrganisationId = model.EncryptId(organisations[0].Id);
+				model.Filter.OrganisationCaption = organisations[0].Name;
+			}
+			model.Paging.PageNo = 1;
+			model.Paging.PageLength = 6;
+
+			return View(model);
+		}
+
+		//-------------------------------------------------------------------
+	}
+	//=======================================================================
+}