Publish Sorani LLM adapter, fix Space default prompt, scrub blocklist terms from docs

Add fail-closed Sorani content filter, no-liability license terms, and endofprompt fix

Update license: Apache 2.0 with RegaLabs credit (commercial) & non-commercial stock voice restriction

Add RegaLabs-TTS banner & feature infographics to README

Update audio resolve URL to RegaLabs namespace

Upload RegaLabs-TTS model weights, infer.py, and app.py Gradio demo