Transcribes audio and video files to text using OpenAI's Whisper CLI with contextual grounding.
Converts audio/video to text, transcribes recordings, and creates transcripts from media files.
Use when asked to "whisper transcribe", "transcribe audio", "convert recording to text", or
"speech to text". Uses markdown files in the same directory as context to improve transcription
accuracy for technical terms, proper nouns, and domain-specific vocabulary.