Merge UI migration and redesign: gradio.Server, dark 3D-studio shell, file-size telemetry, viewer overlay fix

Fix Invalid URL crash in runPipeline and surface file sizes

Redesign UI as a professional 3D studio shell

Fix viewer overlay state hiding the reconstructed iframe

Pass file URLs between pipeline stages instead of re-uploading blobs

Fix @app .api() endpoint name resolution

Migrate UI to gradio.Server with custom HTML frontend

Update project and repository links

Update example gallery

Shorten input guidance

Fix online gallery and panel layout

Add bedroom example and refine input guidance

Add meerkat demo and Node 22 runtime

Sync floater filter tests

Sync Hugging Face runtime tests

Tighten ZeroGPU duration from measured runtime

Prefer warmed npm cache for viewer conversion

Tune ZeroGPU duration and add performance timings

Add floater filtering and staged downloads

Optimize viewer loading and expose download readiness

Deploy InfiniSplat ZeroGPU demo

initial commit