Build a playable Rocket League-style car soccer game in the browser (Three.js, single page, no external assets). A neon stadium with curved walls you can drive up, a giant bouncing ball and two glowing goals; a 2v2 match where you and an AI teammate face two AI rivals that chase the ball, rotate and defend; jump, double-jump flips and a boost meter that refills from boost pads; goal explosions with a slow-mo moment, a scoreboard and a 2-minute match clock. WASD or arrows to drive, Space to jump, Shift to boost. It should feel fast and chaotic the moment it loads.