Codex was handed Task A by mistake and duplicated the state-layer work that
Antigravity had already merged. This reissues its own scope, rebased on the
facts at 39b1f92: PHASE 1 is merged, docs/UI_STATE_CONTRACT.md now exists, and
the twelve backend gaps it declares are mapped to what the UI may and may not
render.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
