Funtris local idle audit

2026-09-10, source304, headful Chrome. This is a realtime falling-tetromino game. Actual Game/New menu command40001 starts a piece; the before/after screenshots show it falling while no further input is sent. Renderer CPU1.68% over10s, host load5.57, main parked at414fd1 (yield7), helper sleeping at403f3a. Raw /private/tmp/wa-idle-puzzles-start304/funtris.json and matching PNGs. The previous102% startup helper-wait spin is fixed by the generic cooperative deadline change; this confirms gameplay still advances. Existing browser gameplay regression: test/test-funtris-web-launch.js.