v2 is English-only; v3 covers 25 European languages with automatic
language detection. The archive shares v2's filenames, architecture,
sample rate, and feature dim, so no runtime loader changes are needed.
Document that the `language` config field and PASEO_*_LANGUAGE vars
only steer the OpenAI STT provider — the local Parakeet models ignore
them, so multilingual local dictation means selecting the v3 model.