kvsudharshanreddyy/Sign_LAnguage_interpreter ? reverse-engineered prompt

Build me a polished Streamlit app that acts like a real time sign language interpreter for ASL. It should use the webcam to detect a hand, recognize letters A to Z plus delete, nothing, and space, then show the current prediction and build it into a sentence as I sign. I want the app to feel stable, so add some smoothing so the letters do not flicker too much, and include simple controls to undo, clear, and manage the sentence.

After a sentence is formed, let me run a grammar and spelling cleanup step with Claude if I add an API key, but keep the app usable without it. Also add text to speech so the final sentence can be spoken out loud. Make the interface clean, dark, responsive, and easy to use on a laptop camera. If you need to, look up the current docs online for Streamlit, MediaPipe, TensorFlow, and text to speech details so it works smoothly.