Transcribe Speech-to-text using Groq Whisper API. Setup The script needs environment variable. Check if already set: If not set, guide the user through setup: 1. Ask if they have a Groq API key 2. If not, have them sign up at https://console.groq.com/ and create an API key 3. Have them add to their shell profile ( /.zshrc or /.bashrc): 4. Then run (or restart terminal) Usage Supported Formats - m4a, mp3, wav, ogg, flac, webm - Max file size: 25MB Output Returns plain text transcription with punctuation and proper capitalization to stdout. ---