feat(dashboard): the game's own shaders in the world and property 3D views

game-shaders.js ports the client's techniques to one ShaderMaterial
program per family and variant: LEGOPPLighting (hemisphere lit sun,
ambient, fresnel rim, N.H^320 specular, the default reflection cube;
decal and non-decal textures, emissive, super emissive, glow, grayscale,
no ambient, AnimUV), BasicShaders and AlphaAsAlpha (lit or unlit, both
sides, alpha blend, alpha test, additive, animated alpha, two layers),
Metallic.fx polished metal and brushed steel with the client's metal
cubes, clear plastic, the Distortion (Ocean) layers, Flat Surf,
BrickWater, darklings, terrain meshes, flairs and the sky. The maths runs
on sRGB values as Direct3D 9 did; lights, specular, hemisphere and fog
blend between scenes; textures move by the .nif's texture transforms.
Programs are shared by every material with the same defines.

A Fog switch (off by default) adds the zone's fog to scenery and
terrain. Shaders the game doesn't draw in the world (footprints, drop
shadows, post-processing) are left out. Docs list the families, their
gameValues and what's approximated.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

dDashboardServer/templates/property-3d.jinja2

@@ -105,6 +105,7 @@
 							<div class="form-check form-switch mb-0 small" id="boundaryWrap"><input class="form-check-input" type="checkbox" id="boundaryToggle" data-pref="property3d.boundary" checked><label class="form-check-label" for="boundaryToggle">Build area</label></div>
 							<div class="form-check form-switch mb-0 small"><input class="form-check-input" type="checkbox" id="shadowToggle" data-pref="property3d.shadows" checked><label class="form-check-label" for="shadowToggle">Shadows</label></div>
 							<div class="form-check form-switch mb-0 small" title="The zone's sky, as the game draws it (with Scenery on)"><input class="form-check-input" type="checkbox" id="skyToggle" data-pref="property3d.sky" checked><label class="form-check-label" for="skyToggle">Sky</label></div>
+							<div class="form-check form-switch mb-0 small" title="The zone's fog, as the game draws it around the player (with Scenery on)"><input class="form-check-input" type="checkbox" id="fogToggle" data-pref="property3d.fog"><label class="form-check-label" for="fogToggle">Fog</label></div>
 							<div class="form-check form-switch mb-0 small" title="The models placed on the property"><input class="form-check-input" type="checkbox" id="modelsToggle" data-pref="property3d.models" checked><label class="form-check-label" for="modelsToggle">Placed models</label></div>
 							{% if not exists("showcase") %}<div class="form-check form-switch mb-0 small d-none" id="generatedWrap" title="Draw player-built models as the UGC server made them for the game (on: generated models; off: built from their LXFML). Models it hasn't made yet are built from their LXFML either way"><input class="form-check-input" type="checkbox" id="generatedToggle" data-pref="property3d.generated" checked><label class="form-check-label" for="generatedToggle">Generated models</label></div>{% endif %}
 							<div class="form-check form-switch mb-0 small" title="Also draw, see-through, the models of objects the game doesn't draw: trigger and blocking volumes (with Scenery on)"><input class="form-check-input" type="checkbox" id="hiddenToggle" data-pref="property3d.hidden"><label class="form-check-label" for="hiddenToggle">Hidden objects</label></div>
@@ -387,6 +388,7 @@ async function showScenery() {
 	const toggle = document.getElementById('sceneryToggle');
 	scenery.setEnabled(toggle.checked);
 	scenery.setSky(document.getElementById('skyToggle').checked);
+	scenery.setFog(document.getElementById('fogToggle').checked);
 	scenery.setShowHidden(document.getElementById('hiddenToggle').checked);
 	if (!toggle.checked) return;
 	const lod = parseInt(document.getElementById('lodSelect').value, 10);
@@ -471,6 +473,7 @@ document.getElementById('terrainToggle').addEventListener('change', () => showTe
 document.getElementById('boundaryToggle').addEventListener('change', showBoundary);
 document.getElementById('sceneryToggle').addEventListener('change', showScenery);
 document.getElementById('skyToggle').addEventListener('change', showScenery);
+document.getElementById('fogToggle').addEventListener('change', showScenery);
 document.getElementById('hiddenToggle').addEventListener('change', showScenery);
 document.getElementById('modelsToggle').addEventListener('change', (e) => viewer.setModelsVisible(e.target.checked));
 if (document.getElementById('generatedToggle')) document.getElementById('generatedToggle').addEventListener('change', () => { loadedLod = null; loadScene(); });

dDashboardServer/templates/world3d.jinja2

@@ -151,6 +151,7 @@
 							</select>
 							<div class="form-check form-switch mb-0 small"><input class="form-check-input" type="checkbox" id="labelsToggle" data-pref="world3d.labels" checked><label class="form-check-label" for="labelsToggle">Names</label></div>
 							<div class="form-check form-switch mb-0 small" title="The zone's sky, as the game draws it (with Scenery on)"><input class="form-check-input" type="checkbox" id="skyToggle" data-pref="world3d.sky" checked><label class="form-check-label" for="skyToggle">Sky</label></div>
+							<div class="form-check form-switch mb-0 small" title="The zone's fog, as the game draws it around the player (with Scenery on)"><input class="form-check-input" type="checkbox" id="fogToggle" data-pref="world3d.fog"><label class="form-check-label" for="fogToggle">Fog</label></div>
 							<div class="form-check form-switch mb-0 small" title="Also draw, see-through, the models of objects the game doesn't draw: trigger and blocking volumes (with Scenery on)"><input class="form-check-input" type="checkbox" id="hiddenToggle" data-pref="world3d.hidden"><label class="form-check-label" for="hiddenToggle">Hidden objects</label></div>
 						</div>
 						<div class="fw-semibold mb-1">Scenes</div>