[Blocker] fix: v2.1 — Fix collision, City Track, Clean UI

## GitHub Update **Repository:** [MKWcorp/carrstret](https://github.com/MKWcorp/carrstret) **Author:** Carrstret Dev **Date:** 3/27/2026, 3:10:22 PM **Commit:** [`a3f64e6`](https://github.com/MKWcorp/carrstret/commit/a3f64e630fc9ffb8b75cf6ed4857495487c43db4) ### Commit Message fix: v2.1 — Fix collision, City Track, Clean UI FIX COLLISION (mobil tidak tembus track): - Ganti RigidBody dynamic ke kinematicPosition - Tambah CuboidCollider manual (0.95 x 0.45 x 2.1) - Raycast ke bawah untuk ground detection - Gravity manual + smooth snap ke permukaan - Safety net: auto-reset jika jatuh < -20m - Spawn Y lebih tinggi (2.5m) agar tidak stuck CITY TRACK (nuansa kota malam): - Sirkuit persegi besar (city block circuit) - Aspal kota gelap dengan marka jalan putih - 24 gedung pencakar langit di sekitar circuit - Gedung dengan window glow emissive (biru/kuning/cyan/pink) - Rooftop neon glow di setiap gedung - 20 street lamps dengan point lights - Neon accent strips di barrier (cyan/merah/hijau/pink) - Barrier beton dalam & luar circuit - 5 ambient city light points di sudut CLEAN UI (tidak ada tombol menumpuk): - ProHUD: top-left car badge, top-center lap/timer, top-right pause+mute (stacked vertikal, tidak overlap) bottom-right speedometer+gear - VirtualControls: D-pad bottom-left, BRAKE+RESET bottom-right di kiri speedometer (right-[165px]) hanya muncul di mobile (sm:hidden) - GameWrapper: hapus pause button duplikat - PauseMenu & GameOver: redesign bersih - Tidak ada z-index conflict --- _This story was imported from historical commits._