gskinnerTeam/flutter_vignettes ? reverse-engineered prompt

Build me a Flutter showcase app for a collection of playful UI experiments.

I want a home screen that feels like a gallery of animated demos, with cards or tiles for each vignette, and tapping one opens the full interactive example. The app should highlight the kind of things Flutter is good at, like parallax cards, gooey transitions, folding cards, particle effects, custom animated navigation, liquid style cards, custom sliders, starfield backgrounds, hero transitions, and other polished motion driven interactions.

Make it look beautiful and fun, with smooth transitions, strong visuals, and a clean browsing experience so people can explore the demos one by one. If anything in the original project needs current Flutter guidance, look up the latest docs online and use the most sensible approach. I mainly want a polished, working showcase that makes these experiments easy to browse and enjoy.