feat: redesign Gradio UI with sections, number inputs, and better layout

fix: revert to stable pure Gradio app

fix: FastAPI app with /mobile/predict, Gradio mounted at root

fix: register REST route via demo.load event instead of at module level

fix: use demo.app to add /mobile/predict REST route, remove gr.api

feat: add gr.api mobile_predict endpoint for direct REST access

fix: add api_name='predict' to submit_btn.click for Gradio API

fix: revert to pure Gradio app - remove custom FastAPI to fix crash

fix: use demo.app to add custom REST route, remove gr.mount_gradio_app

fix: restructure app.py - FastAPI app at module level with REST endpoint

feat: add plain REST /api/predict endpoint for mobile app

Pin numpy==2.0.0 and sklearn==1.8.0 to match pkl build environment

Fix gradio version conflict - remove from requirements, update sdk_version

Pin numpy==1.26.4 and sklearn==1.6.1 to match pkl environment

Fix app.py merge conflicts - clean distilled model

Fix README merge conflict

Switch to distilled student model from HuggingFace

Fix checkbox bool conversion

Fix clinical feature order

Fix model architecture to match saved weights

Add fusion model bundle

Add TB late fusion Gradio app

initial commit