Claude Sonnet 5.5 on Build a full game (code, art, audio) with AI

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 "result": "I built the game as a single file, `./usecase-runner/runs/17-sonnet/work/index.html`. I only checked that the JavaScript parses. I haven't opened it in a browser, so gameplay, sound and the localStorage high score are untested.\n\n**How it plays**\n- **Goal:** the capybara hops from the bottom bank across 8 river lanes to the flowery bank at the top.\n- **Controls:** arrow keys or WASD to hop. P pauses and M mutes. Enter, Space or a click starts and restarts.\n- **Dying:** you lose a life if you land in water, ride off-screen or are on a turtle when it dives. You have 3 lives.\n- **Platforms:** logs drift in alternating directions. From level 2, some lanes have turtles that sink and resurface.\n- **Difficulty:** each level makes the lanes faster, shortens the logs and widens the gaps. The music tempo also speeds up.\n- **Score:** 10 \u00d7 level for each new row reached, plus 100 \u00d7 level for each crossing.\n- **Screens:** the title screen has a Start button. The game-over screen shows your score, the high score and a Restart button. The high score is saved in `localStorage`.\n\n**Art and audio**\n- **Art:** everything is drawn on the canvas, with no image files. That includes the capybara, logs, turtles, animated water, reeds and splash particles.\n- **Sound effects:** hop, splash, goal jingle, game-over jingle and a start tick, all synthesized with the Web Audio API.\n- **Music:** a looping pentatonic melody with a bass line.\n- **Audio start:** audio starts on the first key press or click.",
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