Shane's Trains 0.1.6 — Shane's Trains Steam update #55784

Map engine rewrite - Replaced Leaflet + protomaps-leaflet with maplibre-gl-js + @protomaps/basemaps. - Fixes the long-standing freeze where rapid zoom/pan would stall the GPU compositor and lock the window. - All six map themes restored (light, dark, white, grayscale, black, contrast) with full Protomaps flavor palettes, no more sharp cutouts at high zoom. Map editor port - Map editor rebuilt natively against the new engine; overlay no longer drifts from the basemap when panning/zooming. - Track waypoint editing is now GPU-accelerated: snap reference dots render as a single circle layer instead of 1,600+ DOM markers. - Selected track uses a dedicated source so dragging a waypoint doesn't retessellate every other track on the map. - OSM import (Overpass) and OSM trace (A* path along OSM ways) preserved. Visual systems - Weather overlay (clouds, rain, snow particles) ported to maplibre pro...