Troubleshoot fastlane launch_lite installation error (#20)

* fix: Disable #Preview macro for SPM command-line builds

The #Preview macro requires PreviewsMacros plugin which may not be
available during SPM command-line builds, causing build failures on
fresh Mac installations. Commented out the preview block to fix
'fastlane launch_lite' build errors.

Preview can be re-enabled when building in Xcode by uncommenting.

Fixes: error: external macro implementation type 'PreviewsMacros.SwiftUIView'
could not be found for macro 'Preview(_:body:)'

* Update Sources/ClickIt/Lite/SimplifiedMainView.swift

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

---------

Co-authored-by: Claude <[email protected]>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: 3 people

Sources/ClickIt/Lite/SimplifiedMainView.swift

@@ -386,7 +386,8 @@ struct SimplifiedMainView: View {
 }
 
 // MARK: - Preview
-
+#if DEBUG
 #Preview {
     SimplifiedMainView()
 }
+#endif