[Blocker] fix: v2.4 — Fix lag + fix tembus tembok

## GitHub Update **Repository:** [MKWcorp/carrstret](https://github.com/MKWcorp/carrstret) **Author:** Carrstret Dev **Date:** 3/27/2026, 3:52:12 PM **Commit:** [`ae98491`](https://github.com/MKWcorp/carrstret/commit/ae98491f16c87654f6ab1ce7d6a0b30c3a62bac2) ### Commit Message fix: v2.4 — Fix lag + fix tembus tembok FIX LAG: - ProTrack: dari ~120+ mesh → ~30 mesh total - RigidBody: dari banyak → hanya 1 ground + 8 wall collider - Gedung: dari 29 → 8 besar (dekoratif, NO RigidBody) - PointLight: dari 20+ → hanya 3 - Road: 1 ExtrudeGeometry shape (bukan 9 box terpisah) - PostProcessing: multisampling 4→0, hapus ChromaticAberration - Bloom kernel LARGE→MEDIUM FIX TEMBUS TEMBOK: - kinematicPosition tidak punya collision response otomatis - Implementasi manual AABB wall collision di ArcadeCar - Outer walls: ±51 (X dan Z) - Inner walls: ±37 (X dan Z, hanya di straight bukan corner) - Saat hit: posisi di-clamp, velocity di-dampen (×0.3) - Corner area (|x|>37 && |z|>37): inner wall tidak aktif sehingga mobil bisa belok bebas di corner --- _This story was imported from historical commits._