SheldonKCalicott/AutoMessenger ? reverse-engineered prompt

Build me a simple desktop app that lets me send personalized text messages to a list of people from a CSV file. I want to upload a file with Name and Phone columns, have the app clean up the phone numbers automatically, and ignore bad entries.

The app should show a live preview of the message so I can see exactly what each person will get before sending. I also want a couple of fields or dropdowns for things like location and time range so the message can be customized quickly for different groups.

When I click send, it should open Google Messages Web, let me pair my phone if needed, and then send the messages one by one automatically. If a message fails, it should try again instead of stopping everything. Keep the interface simple and easy to use, with a clear contact preview and a big send button. If you need to check the latest Selenium or browser setup details, look up the current docs online.