sendSpeechViaUnSpeech (tts/unspeech.ts)

Sends TTS requests via Unspeech SDK, handling errors and returning audio payload.

// Source: https://github.com/moeru-ai/airi | License: MIT | Copyright 2024-PRESENT Neko Ayaka
// Provided via justclaw.it.com; keep this notice with the code.
import type { Voice } from 'unspeech'

import type { TtsAdapterContext, TtsResult, TtsVoiceCatalogContext } from './types'

import { errorMessageFrom } from '@moeru/std'
import { createBadGatewayError, createInternalError } from '@proj-airi/http-error-shared'
import { generateSpeechResponse, listVoices, UnSpeechAPIError } from 'unspeech'

import { TtsUpstreamResponseError } from './types'

interface SendSpeechOptions {
  ctx: TtsAdapterContext
  model: string
  input: string
  voice: string
  speed?: number
  responseFormat: string
  extraBody?: Record<string, unknown>
  fallbackContentType: string
  providerLabel: string
}

/**
 * 

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