loudr-1: complete v0.1 bundle

docs: explain the Apple split engine

docs: simplify model card

Make listening samples playable in PR preview

Point previews at the current GitHub owner

Rewrite model card for users

Preview: user-facing v0.1 model card

loudr-1 full-0.1: complete artefact set with full checksum coverage

Upload folder using huggingface_hub

initial commit