Clean-room 2D skeletal and deform animation format with a Nim reference runtime, Dart runtime, CLI tooling, and shared conformance suite.
spec/- format schema and language-neutral contracts.registry/- append-only type and property key registry.codegen/- generated encoder/decoder tooling.runtime-nim/- Nim reference runtime package.runtime-dart/- Dart runtime package.cli/- command-line harness and tooling.conformance/- shared assets, scripts, and golden vectors.docs/- process notes and design documentation.