[ui] Add semantic primitive ownership Build a layered Zenbu token and sizing system, make authored controls use native-underneath primitives, migrate mrjunejune without imposing visual surfaces, and document/enforce HTML ownership in the catalog and wiki. Co-authored-by: Copilot <[email protected]>

#!/bin/bash

bazel build //mrjunejune:mrjunejune_server -c dbg && gdb bazel-bin/mrjunejune/mrjunejune_server