- ParticleBuildText: self-scheduling rAF loop (previous one-shot tick left the canvas blank until scroll), deterministic sampleUntilBuilt warm-up, ambient star layer spread across the whole card with twinkle, random drift and a birth/death lifecycle (4-10s TTL with 800ms fades and respawn)
- ControlRoomGlobe: fail-soft WebGL guard (webgl2/webgl check + try/catch around createGlobe) so an unavailable or poisoned context renders the fallback instead of crashing the hero tree