Add Store MSIX packaging and dark/light theme for 2.9.0.

EOF

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/update/update_windows.go

@@ -20,6 +20,9 @@ const finishUpdateFlag = "--navis-finish-update"
 
 // Apply downloads the new build and replaces the running Navis.exe after this process exits.
 func Apply(ctx context.Context, manifestURL string) (string, error) {
+	if IsStorePackaged() {
+		return "", fmt.Errorf("обновления устанавливаются через Microsoft Store")
+	}
 	latest, _, _, exe, tmp, err := prepareDownload(ctx, manifestURL)
 	if err != nil {
 		return "", err