The gateway now hints on the SCENE the runtime pushes (idf_zacus POSTs
its native SCENE_* to /game/step?scene=…) — no step<->scene mapping
needed since both sides use the same SCENE_* ids. _active_scene() uses
the pushed scene (falling back to the current step's scene). Bump
ESP32_ZACUS to 653a299 (npc_engine pushes scene changes).
clement
42a3b22823