rainy: add optional weekday labels

[saltedlolly]

@sgmorton I really like your Rainy? app. It is the perfect Tronbyt app, giving you exactly the information you need at a glance. Thanks for making it.

I hope you don’t mind, but I took the liberty of adding an option to display the TDY and TOM labels as three-letter days of the week instead—for example, TUE and WED.

The existing TDY / TOM labels remain the default, so this does not change the display for existing users.

Changes

• Added a Day labels dropdown with “Today / Tomorrow” and “Day of Week” options
• Used the configured location’s timezone to determine the current weekday
• Handled the next weekday without relying on 24-hour date arithmetic
• Updated the README
• Added a preview image showing the weekday option

Preview

Testing

• pixlet check apps/rainy/rainy.star
• pixlet lint apps/rainy/rainy.star
• Rendered and checked both label modes

[sgmorton]

Thanks @saltedlolly, glad you like Rainy! The weekday labels are a great addition, and keeping TDY/TOM as the default is exactly right. Looks good to me as the original author. 👍