krishB-Me/TheCSLetter — reverse-engineered prompt

Build me a simple web app for creating and sending email newsletters. I want a small dashboard where I can add subscribers, organize them by topics, and trigger a newsletter send from the browser. The app should store subscriber and topic data in a local SQLite database so it is easy to manage without setting up anything heavy.

Please include the core flow for generating the newsletter content and sending it through SMTP with my email and app password, and make the content feel suited for something like a weekly computer science or coding digest. I also want basic templates so the emails are not just raw text, and the project should be easy to extend later with more templates or content sources.

Keep the interface clean and straightforward, and make sure it can run locally and also in Docker. If anything is unclear, check the current docs online and wire it up in the simplest practical way.