Child of #714, feeds #708 and is the DONE condition of #714. After gates G2b and G2: deliver MercatorV0.9.zip to the pilot cloud body (source of truth: Perforce //mercatormetahuman/main/Builds/ on ssl:visitflanders.experiencenet.com:1667, or HydraTransfer from an existing body; deployed V0.9 is MD5-verified identical on the on-prem bodies), install to C:\experiences\mercator-talks\MercatorV0.9, register the Sunshine app, enroll the body in bxl1-test-cloud, pair a sanctioned test head (cheeky-cactus class), stream over tunnel-direct with an in-session B1 hydraprobe run, and record the 4.7 gate numbers plus the G3 interaction check (tap-to-photon 240 fps method) on #708.