leony777/projetinhos ? reverse-engineered prompt

I want you to turn this repo into a clean little workspace for two experiments, one called GPT_VOZ and another called VETORIZACAO_LANGCHAIN.

The goal is to make it easy to run and test both projects from the same repo, with a simple setup, clear instructions, and the basic code needed to get each one working. For GPT_VOZ, I want something that can take spoken input and respond with text or voice. For VETORIZACAO_LANGCHAIN, I want a basic example for loading text, turning it into embeddings, and doing simple search or question answering over it.

Please organize the files sensibly, add a README that explains how to run everything, and clean up anything confusing. If you need to look up current docs online for the best way to wire things together, go ahead. Keep it simple and practical so I can open it and start using it right away.