What changed:

EchoScript : made it automatic, not exclusive: TranslationService picks anthropic when ANTHROPIC_API_KEY is set, otherwise falls back to marian (fully offline/free) - overridable via ECHOSCRIPT_TRANSLATION_BACKEND=anthropic|marian. So EchoScript still works with zero API key, but gets better translation quality and zero missing-pair errors the moment you set one.

EchoScript : services\translation.py , Fix: services/translation.py now loads MarianMT directly via AutoModelForSeq2SeqLM + AutoTokenizer and calls model.generate() itself, bypassing the removed pipeline() task wrapper entirely. This is the path the official MarianMT docs use now too, so it's not a workaround you'll need to revisit on the next transformers release.

EchoScript : New Architecture