CLASSIC ARCADE BENCHMARK 09: Coinfall Crisis. Build a complete playable browser arcade game as one self-contained index.html using Three.js. Make an original coin-pusher-inspired physics score attack with a visible drop area, moving pusher shelf, payout edge, at least one loss or hazard channel, keyboard and touch controls, score/local high score, end state, and instant restart. The player selects a lane, drops limited tokens, reads the moving board, triggers visible cascades, and decides when to bank safely or risk an unstable pile. Include four object roles: common low-value tokens, awkward high-value tokens, modifier tokens that change board or machine state, and hazard or fragile tokens. Add a stability gauge that increases payout potential but makes collapse or reset more dangerous, plus a limited earned nudge tool that affects the pusher or board. Physics may be stylised but payouts must be visually explainable. Theme, token design, machine construction, sound, and art direction are open. No external asset pack. Submit final index.html only, not a mockup or explanation, with no build step.