fix(ribbon): invalidate "שמור קבצים" on SelectionChange (button stays disabled)

The new SaveAttachments button rendered but stayed greyed out. Cause:
getEnabled callbacks are evaluated once when the ribbon loads and the
result is cached — Office only re-asks if you explicitly invalidate
the control. The previous SelectionChange handler invalidated only
FileToEspoCrm.

Collected the selection-dependent button IDs into a static array and
made the SelectionChange handler invalidate all of them. Adding more
context-sensitive buttons in the future is now a one-line edit.

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

src/OutlookAddin/OutlookAddin.csproj

@@ -36,7 +36,7 @@
     <PublishUrl>C:\Users\Chaim\source\repos\OutlookAddin\Publish\</PublishUrl>
     <InstallUrl>\\192.168.10.97\Projects\LegalCRM\Add-in\</InstallUrl>
     <TargetCulture>en</TargetCulture>
-    <ApplicationVersion>1.0.0.4</ApplicationVersion>
+    <ApplicationVersion>1.0.0.5</ApplicationVersion>
     <AutoIncrementApplicationRevision>true</AutoIncrementApplicationRevision>
     <UpdateEnabled>true</UpdateEnabled>
     <UpdateInterval>7</UpdateInterval>
@@ -270,9 +270,6 @@
     <EmbeddedResource Include="Images\klear-compose.png">
       <LogicalName>OutlookAddin.Images.klear-compose.png</LogicalName>
     </EmbeddedResource>
-    <EmbeddedResource Include="Images\klear-attach.png">
-      <LogicalName>OutlookAddin.Images.klear-attach.png</LogicalName>
-    </EmbeddedResource>
     <Compile Include="Services\AddInHost.cs">
       <SubType>Code</SubType>
     </Compile>

src/OutlookAddin/Ribbon/ExplorerRibbon.cs

@@ -19,7 +19,15 @@ namespace OutlookAddin.Ribbon
     {
         private const string ExplorerResource = "OutlookAddin.Ribbon.ExplorerRibbon.xml";
         private const string InspectorResource = "OutlookAddin.Ribbon.InspectorRibbon.xml";
-        private const string FileButtonId = "FileToEspoCrm";
+
+        // Every button whose `getEnabled` depends on the current Explorer
+        // selection must be re-evaluated on every SelectionChange — Office
+        // caches the initial result otherwise and the button stays stuck.
+        private static readonly string[] SelectionDependentButtons =
+        {
+            "FileToEspoCrm",
+            "SaveAttachments"
+        };
 
         private IRibbonUI? _explorerRibbon;
         private IRibbonUI? _inspectorRibbon;
@@ -45,7 +53,7 @@ namespace OutlookAddin.Ribbon
                 var explorer = Globals.ThisAddIn.Application.ActiveExplorer();
                 if (explorer != null)
                 {
-                    explorer.SelectionChange += () => _explorerRibbon?.InvalidateControl(FileButtonId);
+                    explorer.SelectionChange += InvalidateSelectionDependentButtons;
                 }
             }
             catch
@@ -54,6 +62,16 @@ namespace OutlookAddin.Ribbon
             }
         }
 
+        private void InvalidateSelectionDependentButtons()
+        {
+            var ribbon = _explorerRibbon;
+            if (ribbon == null) return;
+            foreach (var id in SelectionDependentButtons)
+            {
+                try { ribbon.InvalidateControl(id); } catch { /* ignore */ }
+            }
+        }
+
         public void OnInspectorRibbonLoad(IRibbonUI ribbon)
         {
             _inspectorRibbon = ribbon;