Transcription Language Detection Issue

When speaking in Spanish, it constantly transcribes in a mix of English and Spanish. I assume this happens because it phonetically detects that the first word is in English and then transcribes the rest accordingly. It would be great to be able to choose the transcription language.

The repository describes this as a legacy Swift macOS app and points to a Rust rewrite, so first confirm which codebase should receive the change. In the applicable source, locate the transcription and Whisper integration, then verify that selecting Spanish keeps Spanish speech consistently transcribed.

Written by the indexing model from the issue text.