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Fix: add all TTS parameters (text_split_method, seed, etc.) for proper long text handling

Fix: correct reference text for zh_vo_MAIN_YHX_2_12.wav

Fix: use correct reference text matching zh_vo_MAIN_YHX_2_12.wav

Fix: update ref text and prompt lang to Chinese for Aemeath

Fix: use Aemeath reference audio (zh_vo_MAIN_YHX_2_12.wav)

Fix: add uvicorn.run() to actually start the server

Add GSVI compatibility routes

Preload fast-langdetect model

Fix Space boot and wire up TTS UI

switch to FastAPI

simplify ui

fix: simplify build, download models on runtime