Modernize versioning and display in app and build output

- Switch to explicit "3.2.0" next-version in GitVersion.yml
- Update NuGet packages and set assembly name to "ImageCatalog"
- Add MSBuild target to rename published exe with year and version
- Add AppVersion property to DataModel, set via IVersionProvider
- Replace static version label with data-bound versionLabel in UI
- Remove manual version label logic from MainForm
- Update DI to inject IVersionProvider into DataModel
- Ensures UI always shows correct version and builds are versioned

imagecatalog/DataModel.cs

@@ -45,7 +45,7 @@ namespace ImageCatalog_2
 
         public DataModel(ITestService testService, ISettingsService settingsService, 
             ImageCreationStuff imageCreationService, PicSettings picSettings, 
-            IMapper mapper, ILogger<DataModel> logger)
+            IMapper mapper, ILogger<DataModel> logger, MaddoShared.IVersionProvider? versionProvider = null)
         {
             _service = testService;
             _logger = logger;
@@ -53,6 +53,8 @@ namespace ImageCatalog_2
             _imageCreationService = imageCreationService;
             _picSettings = picSettings;
             _mapper = mapper;
+            // Populate AppVersion from version provider when available
+            AppVersion = versionProvider?.GetVersionString() ?? string.Empty;
 
             TestCommand = new RelayCommand(Test);
             AsyncTestCommand = new AsyncCommand(TestAsync);
@@ -1123,6 +1125,17 @@ namespace ImageCatalog_2
         {
             await _settingsService.LoadSettingsAsync(filePath, this);
         }
+
+        private string _appVersion = string.Empty;
+        public string AppVersion
+        {
+            get => _appVersion;
+            set
+            {
+                _appVersion = value;
+                NotifyPropertyChanged();
+            }
+        }
     }
 }