Rename cross_dataset_evaluation to combined_dataset_evaluation; fix README references

Update screenshots: landing, metrics, sandbox, dashboard, heatmap, report

On Analyze click: scroll to sandbox (processing spinner) then to dashboard

Add assets, cross-dataset evaluation code, and model metrics

Trigger Docker rebuild for UI changes (GitHub nav link, remove View Demo/Launch buttons)

Fix YAML metadata in README

Update static files with nav and UI button changes

Update README with combined dataset metrics (99.11% acc, 0.9994 AUC)

Remove duplicate nav links from footer

Update UI build and submodule

Fix HF Spaces audio loading: Resolve LFS pointers & use relative URLs

Auto-resolve LFS audio files at startup

Deploy AudioShield with built frontend, model, and audio samples