fix: add @spaces.GPU decorator for ZeroGPU compatibility

fix: set sdk_version to 5.44.1 (valid gradio version)

fix: remove all version pins, let HF Space resolve dependencies

fix: remove huggingface_hub pin, let gradio 5.25.2 resolve compatible version

fix: pin gradio 5.25.2 + huggingface_hub 0.26.2 for HF Space compat

init: ytranscript — YouTube/Twitch to text with faster-whisper + yt-dlp