echo_steps_demo.mp4 (19.77 seconds, silent) and echo_steps_runtime.gif:
Actual Pyxel 2.9.9 rendering of room 2, with scripted input spaced 45–70 frames apart after 90 initial frames.
The on-screen bottom-right label says 自動操作の検証映像.
No fabricated outcomes or simulated replacement screenshots.
runtime_060.png: room 2 start.
runtime_260.png: shadow holding plate while player has to plan around remembered UP.
runtime_540.png: room 2 clear.
The older runtime_020/110/210 images preserve the first faster capture iteration.
runtime_events.json: exact submitted actions and model states for this capture.
The rendering was run in Pyxel headless mode; this alone is not desktop input QA.
Audio initialization failed in this cloud environment; the MP4 is intentionally silent.
No fresh-user playtest or enjoyment claim.

manual_runtime.png: final-build native-keyboard room2 clear screenshot, normal manual mode.
manual_runtime_events.json: eight actual CUA keyboard inputs in final build (no demo driver).
manual_playtest.txt: exact manual coverage, responsiveness fix, and limitations.
