DESIGN.md@docs git:20260804.3d3d7ffA

Immutable. This exact content is served forever at /api/v1/blob/b793e42990ff76f7.

# radin — design history

Scratch doc for `~/.claude/.radin/` namespace migration. Content formalized into [docs/architecture.md](architecture.md) and [docs/domain-models.md](domain-models.md).

Kept as historical note on storage model origin. Not maintained forward.