/* ═══════════════════════════════════════════════════════════════ WebGL visual-layer mount — added by the 3D integration. See PLUNDER-INTEGRATION-PLAN.md for the full plan. What this does: - Hides Plunder's OLD 2D scene layer: nightbg.js's sky/moon/stars/sea canvas (#bg), scene.js's ship cutouts (.lane), and the fx particle canvas (#fx). Nothing about their JS was deleted — app.js's calls into Scene's methods are all still wired and harmless, they just no longer paint anything visible. This keeps the diff to scene.js/app.js at ZERO. - Positions the new three.js canvas (#webgl-stage, mounted by webgl-scene.js) to fill the same #stage box #sea/#bg used to fill. To revert to the old 2D visuals: delete this file, remove its and the #webgl-stage + its