publish: 1.2.10 — verify on-every-startup auto-update from v1.2.9

No code change. After v1.2.9 set UpdatePeriodically=false, the VSTO
runtime should hit the .vsto manifest on every Outlook launch. From a
clean v1.2.9 install: close Outlook, reopen, About tab shows 1.2.10
with no clicks anywhere.

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

src/OutlookAddin.UI/ViewModels/SettingsViewModel.cs

@@ -214,25 +214,25 @@ namespace MarcusLaw.OutlookAddin.UI.ViewModels
                     return;
                 }
 
-                // VSTO add-ins cannot be updated programmatically from inside
-                // a running Outlook — ApplicationDeployment.Update() throws.
-                // Open the .vsto URL via the shell; Windows hands it to
-                // VSTOInstaller.exe which installs the update correctly.
-                try
-                {
-                    System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(manifestUri.ToString())
-                    {
-                        UseShellExecute = true
-                    });
-                    UpdateStatusBrush = SuccessBrush;
-                    UpdateStatus = $"זמינה גרסה {availableVersion} — אשר את ההתקנה בחלון שנפתח, ואז סגור ופתח את Outlook.";
-                }
-                catch (Exception launchEx)
-                {
-                    _logger.Warning(launchEx, "CheckForUpdate: shell launch of installer URL failed");
-                    UpdateStatusBrush = ErrorBrush;
-                    UpdateStatus = $"זמינה גרסה {availableVersion} אבל לא הצלחנו לפתוח את חלון ההתקנה. גש ידנית ל-{manifestUri}";
-                }
+                // A running Outlook holds file locks on the loaded add-in
+                // DLLs. Neither ApplicationDeployment.Update (TrustNotGranted)
+                // nor a direct VSTOInstaller.exe /I call (0x8007007E
+                // ERROR_MOD_NOT_FOUND) nor Process.Start(.vsto URL) (Chrome
+                // downloads to local-machine zone — InvalidDeploymentException)
+                // can install over those locks. The only path that actually
+                // works is the one VSTO runtime takes automatically on Outlook
+                // startup: it checks the manifest URL before loading the
+                // add-in, downloads + installs if there's a newer version,
+                // then loads it.
+                //
+                // So the button's job is just to tell the user: "close and
+                // reopen Outlook." That's the same flow the user has been
+                // doing manually all along; we're just confirming the new
+                // version is there waiting.
+                UpdateStatusBrush = SuccessBrush;
+                UpdateStatus =
+                    $"זמינה גרסה {availableVersion}. סגור ופתח את Outlook — " +
+                    "הגרסה החדשה תותקן אוטומטית בעלייה.";
                 return;
             }
             catch (System.Deployment.Application.DeploymentDownloadException ex)

src/OutlookAddin/OutlookAddin.csproj

@@ -36,11 +36,10 @@
     <PublishUrl>C:\Users\Chaim\source\repos\OutlookAddin\Publish\</PublishUrl>
     <InstallUrl>https://gitea.dev.marcus-law.co.il/espocrm-extensions/OutlookAddin/raw/branch/main/Publish/</InstallUrl>
     <TargetCulture>en</TargetCulture>
-    <ApplicationVersion>1.2.4.0</ApplicationVersion>
+    <ApplicationVersion>1.2.10.0</ApplicationVersion>
     <AutoIncrementApplicationRevision>false</AutoIncrementApplicationRevision>
     <UpdateEnabled>true</UpdateEnabled>
-    <UpdateInterval>7</UpdateInterval>
-    <UpdateIntervalUnits>days</UpdateIntervalUnits>
+    <UpdatePeriodically>false</UpdatePeriodically>
     <ProductName>MarcusLaw.OutlookAddin</ProductName>
     <PublisherName />
     <SupportUrl />

src/OutlookAddin/Properties/AssemblyInfo.cs

@@ -33,6 +33,6 @@ using System.Security;
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.2.4.0")]
-[assembly: AssemblyFileVersion("1.2.4.0")]
+[assembly: AssemblyVersion("1.2.10.0")]
+[assembly: AssemblyFileVersion("1.2.10.0")]