Extracts the avatar components and the style tokens into shared/ui, which
both apps consume as a workspace package, to try out ADR 2. Nix and the
Docker setups are not updated yet.
Every patch saved its own Rust caches, up to 3 GB per patch, which
pushed the repo past GitHub's 10 GB cache limit and evicted the ones
master builds rely on. Patches now restore master's caches, and
line-table-only debug info keeps the builds and caches smaller.
GitHub only reads workflows from the root `.github/` and ryph only reads
the root `.ryph/`. The desktop workflows now run in `desktop/`, and the
ryph setup installs and warms both projects.
Rūdolfs Ošiņš