fix: gr.update() for HTML outputs, report.total_in attr

fix: remove all gr.Plot outputs; add 5 sample questions to live comparison

fix: correct constructor kwargs, remove gr.Plot from demo buttons

fix: syntax error em-dash, API scoping, demo button registration

fix: correct API calls, defensive imports, demo button compatibility

redesign: professional UI + fix HF color metadata

Initial commit: multimodal-doc-extraction