feat(save-attachments): editable filenames, Hebrew status, smoother subfolder load

- DataGrid case picker now shows status via CaseStatusToHebrewConverter
  (added PendingHearing / PendingDecision mappings)
- Attachment row replaces the read-only filename TextBlock with a TwoWay
  TextBox so users can rename a file before saving (flows through
  EspoAttachment.Name into the upload + the on-disk path)
- SaveAttachmentsViewModel.IsLoadingSubfolders gates the folder ComboBox
  while EnsureCaseSubfolders / GetCase / ListNetworkStorageFolder run,
  so users can't pick a stale "(שורש התיק)" before the real list arrives
- About tab: ResolveDisplayVersion now reads from the host VSTO assembly
  (*.OutlookAddin) instead of the UI assembly. The UI csproj is SDK-style
  with no <Version> so it always reported 1.0.0.0, which leaked into the
  About line on dev installs
- Bump to 1.1.2.0 (csproj + AssemblyInfo) to match the v1.1.2 tag that
  will trigger the Gitea Actions auto-publish to platform.dev

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/OutlookAddin.UI/ViewModels/AttachmentRowViewModel.cs

@@ -10,7 +10,17 @@ namespace MarcusLaw.OutlookAddin.UI.ViewModels
         [ObservableProperty]
         private bool isSelected = true;
 
-        public string FileName => Data.Name;
+        public string FileName
+        {
+            get => Data.Name;
+            set
+            {
+                var newName = value ?? string.Empty;
+                if (Data.Name == newName) return;
+                Data.Name = newName;
+                OnPropertyChanged();
+            }
+        }
 
         public string SizeDisplay { get; }