Remove duplicate lower teaser section

Use overview video in homepage featured card

Unify task examples, add chart tooltips and bound scene loading

Rebuild reference Pareto frontier and default all case displays to live 3D

Restyle Code4Scene with BuildingBench layout and figure toolkit

Link the paper (arXiv:2609.36777): buttons, abstract, BibTeX

Cases: show each case's input (prompt, or reference image and instruction) above the outputs

Leaderboard: one tabbed section; score-against-cost chart coloured by provider

Code4Scene project page: leaderboard, takeaways, cases in 3D

initial commit