Add headless wgpu vision and camera controls

docs/grid-agent-acceptance.md

@@ -113,8 +113,9 @@ hash. Do not record vendor presets or identifiers. Exercise, in order:
    every created prim through the ownership-checked cleanup path.
 6. Create and catalog a current-location landmark, accept a controlled landmark
    offer, use a short bounded folder schedule, teleport, then disable the
-   schedule. Capture the synthetic scene and ask one visual question. Record the endpoint
-   capability fallback if image input is rejected.
+   schedule. Set and reset a bounded camera view, capture the reconstructed scene,
+   and ask one visual question. Record the endpoint capability fallback if image
+   input is rejected.
 7. Gracefully stop. Confirm no pending approvals, scheduled jobs, inventory
    offers, owned test prims, tasks, sockets, or sessions. List any unavoidable
    inventory artifact and its manual recovery ID in private operator notes,