Perihelion Rush

Architect a single-file Three.js browser-based arcade game featuring incremental and automated progression in a Dyson Swarm theme. Demonstrate a playable, tactile core loop integrating Bit-Packed ECS, flat-array memory pooling, and InstancedMesh rendering. Use compact data-driven tables to create deeper replay variety through enemy archetypes, wave affixes, upgrade branches, active abilities, and milestone events coordinated by a lightweight game director. Do not return a passive simulation; return a polished, exciting arcade loop that feels like a recent release. Treat the start screen and HUD as part of the core arcade feel: avoid generic dashboard stat cards; use reactive combat instrumentation for health, heat, cooldowns, wave pressure, and progression. Fully verify the finished implementation using all tools available to this app harness.