Add an on/off toggle in the graphics settings modal's Structure Icons
section that controls whether structures collapse into small dots when
zoomed out. When disabled, applyGraphicsOverrides forces the renderer's
structure.dotsZoomThreshold to 0 — since zoom is always > 0, the dots LOD
never triggers and structures keep their full icon at every zoom level.
The debug GUI already exposes the underlying dotsZoomThreshold slider for
fine control; this surfaces a simple player-facing toggle.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Evan Pelle
d30385fc56