Numanshakir/Talktroves_ChatSDK_flutter ? reverse-engineered prompt

Build me a Flutter chat support widget package for TalkTroves that I can drop into an app and show inside a screen, with a simple setup using a widget key and visitor details.

I want it to support live messaging, AI help, conversation history, typing indicators, read receipts, offline messages, file sharing, and multi agent support. Please make it easy to customize the look and feel, like colors, logo, launcher icon, welcome text, light or dark theme, language, and where the chat appears. It should also let me override parts of the UI if I want to, like the header, welcome section, message bubbles, and input area.

Please include a working example app in the repo, and make sure the widget feels polished on mobile and desktop. If there are any current API details or best practices I should follow, look them up online if you need to.