stt_language_by_code (src/language.rs)

Provides STT language code mapping and resolution for the X.ai STT API.

// Source: https://github.com/xai-org/grok-build | License: Apache-2.0 | Copyright 2023-2026 SpaceXAI
// Provided via justclaw.it.com; keep this notice with the code.
//! Grok Speech-to-Text language codes.
//!
//! Source of truth for the `language` query/form parameter on
//! `https://api.x.ai/v1/stt` and `wss://api.x.ai/v1/stt`.
//!
//! Official catalog (25 languages):
//! <https://docs.x.ai/developers/model-capabilities/audio/speech-to-text#supported-languages>
//!
//! Per the docs, the model can transcribe these languages regardless of the parameter.
//! Setting `language` enables Inverse Text Normalization for that language: numbers, currencies, and units come out in written form.
//! The STT API does **not** accept `auto` (unlike TTS); clients must send a concrete code.
//! Use [`lan

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