Remove the Snow visual preset

Snow is no longer offered anywhere a style can be chosen: the Visual
Presets tray, keyboard shortcut 7, the Cockpit vision carousel, and the
set_visual_style voice action. The shader and its labels go with it;
weather snowfall and the SNOW weather condition are unaffected.

Share links keep working. Snow's enum code (6) stays reserved, so a
compact or long-form link that names it opens on Normal and drops the
Snow shader parameters without reporting them as unknown. A Scene
Director shot saved with Snow plays on Normal too. Snow's frozen share
defaults matched Normal's apart from those parameters, so no other
setting in an old link changes meaning.

The legacy voice-schema pins restore Snow before hashing, so the
unchanged pins still prove nothing else moved; the complete Realtime
payload digest is re-derived.

src/celestialRing.test.mjs

@@ -87,7 +87,7 @@ test('circular angle distance remains small across the wrap point', () => {
 
 test('celestial ring is available only in Normal style', () => {
   assert.equal(isCelestialRingStyleSupported('normal'), true);
-  for (const style of ['retro', 'surveillance', 'thermal', 'anime', 'noir', 'snow']) {
+  for (const style of ['retro', 'surveillance', 'thermal', 'anime', 'noir']) {
     assert.equal(isCelestialRingStyleSupported(style), false);
   }
 });

src/cockpitMarkup.test.mjs

@@ -151,7 +151,7 @@ test('Cockpit vision cycle exposes every map preset exactly once', () => {
   );
   assert.match(
     setVisionMode.toString(),
-    /const labels = \{\s*optical: t\('NORMAL'\),\s*crt: t\('CRT'\),\s*nvg: t\('NVG'\),\s*thermal: t\('FLIR'\),\s*anime: t\('ANIME'\),\s*noir: t\('NOIR'\),\s*snow: t\('SNOW'\),?\s*\};/,
+    /const labels = \{\s*optical: t\('NORMAL'\),\s*crt: t\('CRT'\),\s*nvg: t\('NVG'\),\s*thermal: t\('FLIR'\),\s*anime: t\('ANIME'\),\s*noir: t\('NOIR'\),?\s*\};/,
   );
   assert.doesNotMatch(setVisionMode.toString(), /none: 'NONE'/);
   assert.doesNotMatch(ui, /getInheritedVisionLabel/);

src/cockpitVisionPolicy.js

@@ -5,7 +5,6 @@ export const COCKPIT_VISION_MODES = Object.freeze([
   'thermal',
   'anime',
   'noir',
-  'snow',
 ]);
 
 const TARGET_STYLE_BY_MODE = Object.freeze({
@@ -14,7 +13,6 @@ const TARGET_STYLE_BY_MODE = Object.freeze({
   thermal: 'thermal',
   anime: 'anime',
   noir: 'noir',
-  snow: 'snow',
 });
 
 const COCKPIT_MODE_BY_STYLE = Object.freeze({
@@ -24,7 +22,6 @@ const COCKPIT_MODE_BY_STYLE = Object.freeze({
   thermal: 'thermal',
   anime: 'anime',
   noir: 'noir',
-  snow: 'snow',
 });
 
 /** Normalize a requested Cockpit vision mode to the unfiltered Normal entry. */

src/cockpitVisionPolicy.test.mjs

@@ -23,7 +23,6 @@ test('Cockpit vision order mirrors the unique map preset order', () => {
     'thermal',
     'anime',
     'noir',
-    'snow',
   ]);
   assert.equal(normalizeCockpitVisionMode('none'), 'optical');
   assert.equal(normalizeCockpitVisionMode('unknown'), 'optical');
@@ -36,7 +35,7 @@ test('Cockpit entry selects the vision mode equivalent to the active map style',
   assert.equal(cockpitVisionModeForStyle('thermal'), 'thermal');
   assert.equal(cockpitVisionModeForStyle('anime'), 'anime');
   assert.equal(cockpitVisionModeForStyle('noir'), 'noir');
-  assert.equal(cockpitVisionModeForStyle('snow'), 'snow');
+  assert.equal(cockpitVisionModeForStyle('snow'), 'optical');
   assert.equal(cockpitVisionModeForStyle('unsupported'), 'optical');
 });
 

src/data/trafficPresetStyle.js

@@ -20,7 +20,7 @@
  *    jam keeps a size bump so queues read as fat beads.
  *  - `crt` (retro): saturated primaries that survive 10-level posterization
  *    plus an all-bucket size boost to out-shout the pixel grid.
- *  - `normal` (normal/anime/snow/unknown): every lookup returns null/0 —
+ *  - `normal` (normal/anime/unknown): every lookup returns null/0 —
  *    the shipped palette and sizing apply untouched.
  *
  * Sim/uncovered dots (bucket null/'sim') are NEVER restyled under any

src/data/trafficPresetStyle.test.mjs

@@ -13,7 +13,7 @@ const luma = ([r, g, b]) => (0.299 * r + 0.587 * g + 0.114 * b) / 255;
 
 const BUCKETS = ['free', 'slow', 'jam'];
 const MONO_STYLES = ['surveillance', 'thermal', 'noir'];
-const NORMAL_STYLES = ['normal', 'anime', 'snow', 'does-not-exist', '', undefined, null];
+const NORMAL_STYLES = ['normal', 'anime', 'does-not-exist', '', undefined, null];
 
 test('profile mapping: NVG/FLIR/noir are mono, retro is crt, everything else normal', () => {
   for (const s of MONO_STYLES) assert.equal(trafficStyleProfile(s), 'mono', s);

src/data/transitPresetStyle.js

@@ -18,7 +18,7 @@
  *    black sprite with a light ring is what a hot object looks like there.
  *  - `crt` (retro): saturated per-mode colours that survive posterisation,
  *    a size boost to out-shout the pixel grid, and a thinner halo.
- *  - `normal` (normal/anime/snow/unknown): every lookup returns the shipped
+ *  - `normal` (normal/anime/unknown): every lookup returns the shipped
  *    value — mode colour, shipped size, hairline edge only.
  *
  * Brackets are a different matter. The detection canvas composites ABOVE the

src/data/transitPresetStyle.test.mjs

@@ -17,7 +17,6 @@ test('profile mapping: NVG/FLIR/noir and cockpit nvg are mono, retro is crt, eve
   for (const plain of [
     'normal',
     'anime',
-    'snow',
     'minecraft',
     '',
     null,

src/firstRunExperience.test.mjs

@@ -1040,6 +1040,19 @@ test('the voice TOOL SCHEMA matches the pinned contract — the mission mapping
     'rotate_globe',
     'stop',
   ]);
+  // Snow is retired from set_visual_style; restore it to keep the legacy pin.
+  const visualStyle = legacyTools.find(
+    (tool) => tool.name === 'set_visual_style',
+  ).parameters.properties.style;
+  assert.deepEqual(visualStyle.enum, [
+    'normal',
+    'retro',
+    'surveillance',
+    'thermal',
+    'anime',
+    'noir',
+  ]);
+  visualStyle.enum = [...visualStyle.enum, 'snow'];
   const block = JSON.stringify(legacyTools);
   // Re-derived for the voice layer manifest (generated layer enums, alias and
   // field hints), point-and-ask's pointer/referent arguments and the prompt

src/hud.js

@@ -76,7 +76,6 @@ const MODE_LABELS = Object.freeze({
   thermal: msg('FLIR'),
   anime: msg('ANIME'),
   noir: msg('NOIR'),
-  snow: msg('SNOW'),
 });
 
 /** Region ids from _regionLabel() and the name shown for each. */

src/i18n/locales/es.json

@@ -66,8 +66,6 @@
   "Anime": "Anime",
   "Apply high-contrast monochrome film-noir grading.": "Aplica una gradación monocroma de alto contraste estilo film noir.",
   "Noir": "Noir",
-  "Add a cold, snowy whiteout treatment to the scene.": "Añade a la escena un tratamiento frío de ventisca blanca.",
-  "Snow": "Nieve",
   "MAP SOURCE": "FUENTE DEL MAPA",
   "Map source": "Fuente del mapa",
   "Style": "Estilo",

src/i18n/locales/ru.json

@@ -416,7 +416,6 @@
   "Thermal": "Тепловизор",
   "Anime": "Аниме",
   "Noir": "Нуар",
-  "Snow": "Снег",
   "Current cockpit vision style: {style}. Activate for next style.": "Текущий стиль обзора кабины: {style}. Активируйте, чтобы переключить на следующий.",
   "Current style: {style} — click for next": "Текущий стиль: {style} — нажмите для следующего",
   "AIRCRAFT": "САМОЛЁТ",
@@ -690,7 +689,6 @@
   "Simulate FLIR-style thermal contrast. Turn up Ironbow for color.": "Имитирует тепловой контраст в стиле FLIR. Для цвета увеличьте Ironbow.",
   "Apply bright cel-shaded color and illustrated outlines.": "Применяет яркие cel-shading-цвета и рисованные контуры.",
   "Apply high-contrast monochrome film-noir grading.": "Применяет высококонтрастную монохромную цветокоррекцию в стиле нуар.",
-  "Add a cold, snowy whiteout treatment to the scene.": "Добавляет в сцену холодный снежный эффект «белой мглы».",
   "Expand LOCATION": "Развернуть панель «Место»",
   "Collapse panel": "Свернуть панель",
   "Pin location tray": "Закрепить панель места",

src/i18n/locales/zh-CN.json

@@ -1624,7 +1624,6 @@
   "Thermal": "热成像",
   "Anime": "动漫",
   "Noir": "黑白",
-  "Snow": "雪景",
   "Current cockpit vision style: {style}. Activate for next style.": "当前座舱视觉样式：{style}。点击可切换到下一个样式。",
   "Current style: {style} — click for next": "当前样式：{style}——点击切换到下一个",
   "Collapse Contact panel": "收起目标面板",
@@ -2535,7 +2534,6 @@
   "Simulate FLIR-style thermal contrast. Turn up Ironbow for color.": "模拟 FLIR 风格的热成像对比。调高 Ironbow 可显示色彩。",
   "Apply bright cel-shaded color and illustrated outlines.": "应用明亮的赛璐珞色彩和插画轮廓线。",
   "Apply high-contrast monochrome film-noir grading.": "应用高对比度的黑白电影风格调色。",
-  "Add a cold, snowy whiteout treatment to the scene.": "为场景添加寒冷的暴雪白化效果。",
   "MAP SOURCE": "地图源",
   "Map source": "地图源",
   "Style": "样式",

src/i18n/locales/zh-Hant.json

@@ -1614,7 +1614,6 @@
   "Thermal": "熱成像",
   "Anime": "動漫",
   "Noir": "黑白",
-  "Snow": "雪景",
   "Current cockpit vision style: {style}. Activate for next style.": "當前座艙視覺樣式：{style}。點擊可切換到下一個樣式。",
   "Current style: {style} — click for next": "當前樣式：{style}——點擊切換到下一個",
   "Collapse Contact panel": "收起目標面板",
@@ -2523,7 +2522,6 @@
   "Simulate FLIR-style thermal contrast. Turn up Ironbow for color.": "模擬 FLIR 風格的熱成像對比。調高 Ironbow 可顯示色彩。",
   "Apply bright cel-shaded color and illustrated outlines.": "應用明亮的賽璐珞色彩和插畫輪廓線。",
   "Apply high-contrast monochrome film-noir grading.": "應用高對比度的黑白電影風格調色。",
-  "Add a cold, snowy whiteout treatment to the scene.": "為場景添加寒冷的暴雪白化效果。",
   "MAP SOURCE": "地圖源",
   "Map source": "地圖源",
   "Style": "樣式",

src/radioMarkup.test.mjs

@@ -239,6 +239,19 @@ test('no unchanged Realtime tool definition drifts silently', () => {
     'Direct the camera like a drone operator: orbit the current view target, pan, tilt, or rotate — one bounded nudge (mode=once) or continuous motion until stopped (mode=continuous). Continuous motion also stops on any manual camera input or when a navigation tool runs. Say the RESULTING state when confirming ("Orbiting slowly").';
   camera.parameters.properties.direction.description =
     'Required except for orbit (defaults right/clockwise) and stop.';
+  // Snow is retired from set_visual_style; restore it to keep the legacy pin.
+  const visualStyle = unchanged.find(
+    (tool) => tool.name === 'set_visual_style',
+  ).parameters.properties.style;
+  assert.deepEqual(visualStyle.enum, [
+    'normal',
+    'retro',
+    'surveillance',
+    'thermal',
+    'anime',
+    'noir',
+  ]);
+  visualStyle.enum = [...visualStyle.enum, 'snow'];
   assert.equal(unchanged.length, 14);
   const digest = createHash('sha256')
     .update(JSON.stringify(unchanged))

src/share/legacyShareState.test.mjs

@@ -107,6 +107,13 @@ test('the HAL example survives the round trip and shrinks to 39 characters', ()
   );
 });
 
+test('a long-form link to the retired Snow style opens as Normal', () => {
+  const snow = parseLegacy('v=2&lat=1&lon=2&style=snow&sp=d.90_w.20');
+  const normal = parseLegacy('v=2&lat=1&lon=2');
+  assert.equal(snow.style, 'normal');
+  assert.deepEqual(snow.styleParams, normal.styleParams);
+});
+
 test('links from earlier long-form versions keep their historical meaning', () => {
   for (const hash of [
     'lat=10&lon=20',

src/share/viewCodec.js

@@ -33,6 +33,7 @@ import { clampScopeFeatherPct } from '../scopeMaskPolicy.js';
 import { VIEW_STYLES } from '../view/index.js';
 import {
   GLOBAL_POST_DEFAULTS,
+  RETIRED_STYLES,
   STYLE_PRESET_DEFAULTS,
   STYLES,
 } from '../ui/visualPresets.js';
@@ -101,7 +102,7 @@ export const SHARE_VIEW_ENUMS = Object.freeze({
     'thermal',
     'anime',
     'noir',
-    'snow',
+    'snow', // retired (RETIRED_STYLES): decodes as Normal
   ]),
   mapStack: Object.freeze([
     'photoreal',
@@ -221,10 +222,6 @@ export const SHARE_VIEW_STYLE_PARAMS = Object.freeze({
     { key: 'grainAmt', token: 'g', min: 0, max: 1 },
     { key: 'vignetteAmt', token: 'v', min: 0, max: 1 },
   ]),
-  snow: freezeAll([
-    { key: 'density', token: 'd', min: 0, max: 1 },
-    { key: 'wind', token: 'w', min: 0, max: 1 },
-  ]),
 });
 
 /**
@@ -1321,8 +1318,12 @@ export function decodeShareView(code, { nowMs = Date.now() } = {}) {
         return { ok: false, reason: 'out-of-range' };
     }
 
+    // A retired style's code stays reserved: the view opens on Normal, and
+    // parameters written for it are dropped rather than reported as unknown.
+    const retiredStyle = RETIRED_STYLES.includes(raw.style);
     if (raw.style !== undefined && !VIEW_STYLES.includes(raw.style)) {
-      if (get('style').len) unknown.code('enum:style', raw.style);
+      if (get('style').len && !retiredStyle)
+        unknown.code('enum:style', raw.style);
       raw.style = undefined;
     }
     for (const key of ['hudVariant', 'mapStack']) {
@@ -1357,7 +1358,7 @@ export function decodeShareView(code, { nowMs = Date.now() } = {}) {
       unknown.code('layer-option', 'without-layers');
     if (get('panelState'))
       raw.panelState = decodePanels(get('panelState').len, unknown);
-    if (get('styleParams'))
+    if (get('styleParams') && !retiredStyle)
       raw.styleParams = decodeStyleParams(
         get('styleParams').len,
         raw.style ?? 'normal',

src/share/viewCodec.test.mjs

@@ -2,6 +2,7 @@ import { test } from 'node:test';
 import assert from 'node:assert/strict';
 import {
   LAYER_STATE_REGISTRY,
+  LAYER_STATE_TOKEN_ALPHABET,
   LAYER_STATE_TOKEN_RESERVATIONS,
   REGISTERED_LAYER_IDS,
   createDefaultLayerState,
@@ -440,7 +441,8 @@ test('defaults travel as frozen meanings that match today’s app defaults', ()
   assert.deepEqual(SHARE_VIEW_ENUMS.hudVariant.slice(0, HUD_LAYOUTS.length), [
     ...HUD_LAYOUTS,
   ]);
-  assert.deepEqual(SHARE_VIEW_ENUMS.style, [...VIEW_STYLES]);
+  // Snow is retired; its code stays reserved (see the retired-style test).
+  assert.deepEqual(SHARE_VIEW_ENUMS.style, [...VIEW_STYLES, 'snow']);
   assert.deepEqual(SHARE_VIEW_ENUMS.mapStack, [...VIEW_MAPS]);
   assert.deepEqual(SHARE_VIEW_ENUMS.detectionAllocation, [
     ...ALLOCATION_STRATEGIES,
@@ -549,7 +551,6 @@ test('the field registry is well formed and permanent', () => {
       ...common,
       styleParams: { contrastAmt: 1.2, grainAmt: 0.5, vignetteAmt: 0.5 },
     },
-    snow: { ...common, styleParams: { density: 0.6, wind: 0.5 } },
   });
   assert.deepEqual(
     SHARE_VIEW_ENTITY_KINDS.map((e) => [e.code, e.kind]),
@@ -966,6 +967,29 @@ test('enum names outside the code tables travel as text', () => {
   ]);
 });
 
+test('links to the retired Snow style open as Normal', () => {
+  const snowCode = SHARE_VIEW_ENUMS.style.indexOf('snow');
+  assert.equal(snowCode, 6, 'a retired code is never reused');
+  const params = new WireWriter()
+    .varint(LAYER_STATE_TOKEN_ALPHABET.indexOf('d'))
+    .varint(90)
+    .varint(LAYER_STATE_TOKEN_ALPHABET.indexOf('w'))
+    .varint(20)
+    .finish();
+  for (const writeStyle of [
+    (writer) => writer.uintField(14, snowCode),
+    (writer) => writer.textField(14, 'snow'),
+  ]) {
+    const writer = new WireWriter();
+    writer.bytes.push(1);
+    writeStyle(writer);
+    writer.bytesField(27, params);
+    const { state, unknownFields } = decodeOk(hashOf(writer.finish()));
+    assert.deepEqual(state, normalizeShareViewState({}));
+    assert.equal(unknownFields, undefined);
+  }
+});
+
 /* ---------------- integrity ---------------- */
 
 test('malformed input is rejected with a reason, never thrown', () => {

src/styles/snow.js

@@ -1,97 +0,0 @@
-import { msg } from '../i18n/marker.js';
-
-/**
- * Snow Style — White overlay + Desaturation + Falling particles
- * Transforms the world into a winter wonderland
- */
-export const snowShader = {
-  name: 'snow',
-  uniforms: {
-    density: { default: 0.6, min: 0, max: 1, label: msg('Density') },
-    wind: { default: 0.5, min: 0, max: 1, label: msg('Wind') },
-  },
-  fragmentShader: /* glsl */ `
-    uniform sampler2D colorTexture;
-    uniform vec2 colorTextureDimensions;
-    uniform float intensity;
-    uniform float time;
-    uniform float density;
-    uniform float wind;
-    in vec2 v_textureCoordinates;
-
-    // Hash function for pseudo-random snow
-    float hash(vec2 p) {
-      p = fract(p * vec2(123.34, 456.21));
-      p += dot(p, p + 45.32);
-      return fract(p.x * p.y);
-    }
-
-    // Layered snow particles
-    float snowLayer(vec2 uv, float layer) {
-      float depth = 0.5 + layer * 0.5;
-      float speed = 0.4 + layer * 0.3;
-      float size = mix(0.01, 0.025, layer);
-      float windForce = 0.05 + wind * 0.2;
-
-      vec2 snowUV = uv * vec2(1.0, 0.5) * (4.0 + layer * 4.0);
-      snowUV.y += time * speed;
-      // Offset is the integral of a swaying velocity sin(time * 0.5 + phase) * windForce,
-      // so the sway stays bounded however long the app has been running.
-      snowUV.x -= 2.0 * cos(time * 0.5 + layer * 3.14) * windForce;
-
-      vec2 cell = floor(snowUV);
-      vec2 f = fract(snowUV);
-
-      float snow = 0.0;
-      // Check neighboring cells for smooth particles
-      for (int y = -1; y <= 1; y++) {
-        for (int x = -1; x <= 1; x++) {
-          vec2 neighbor = vec2(float(x), float(y));
-          vec2 point = vec2(hash(cell + neighbor), hash(cell + neighbor + 100.0));
-          // Animate particle position slightly
-          point = 0.5 + 0.4 * sin(time * 0.3 + 6.2831 * point);
-          float d = length(f - neighbor - point);
-          snow += smoothstep(size, 0.0, d) * depth;
-        }
-      }
-      return snow;
-    }
-
-    void main() {
-      vec2 uv = v_textureCoordinates;
-      vec4 color = texture(colorTexture, uv);
-
-      // Cool/blue color shift
-      vec3 cool = color.rgb * vec3(0.85, 0.9, 1.1);
-
-      // Desaturate partially
-      float luma = dot(cool, vec3(0.299, 0.587, 0.114));
-      vec3 desaturated = mix(cool, vec3(luma), 0.4 * intensity);
-
-      // Brighten (snow coverage lightens everything)
-      vec3 brightened = mix(desaturated, vec3(1.0), 0.15 * intensity);
-
-      // Add white frost overlay on brighter areas
-      float frostMask = smoothstep(0.3, 0.8, luma);
-      vec3 frosted = mix(brightened, vec3(0.95, 0.97, 1.0), frostMask * 0.25 * intensity);
-
-      // Accumulate snow particle layers (density controls amount)
-      float snow = 0.0;
-      snow += snowLayer(uv, 0.0) * 0.5;
-      snow += snowLayer(uv, 0.25) * 0.6;
-      snow += snowLayer(uv, 0.5) * 0.7;
-      snow += snowLayer(uv, 0.75) * 0.8;
-      snow += snowLayer(uv, 1.0) * 1.0;
-      snow = clamp(snow * (0.4 + density * 1.2), 0.0, 1.0);
-
-      // Composite snow particles
-      vec3 result = frosted + snow * 0.8 * intensity;
-
-      // Subtle fog in lower areas
-      float fog = smoothstep(0.0, 0.4, 1.0 - uv.y) * 0.1 * intensity;
-      result = mix(result, vec3(0.85, 0.88, 0.95), fog);
-
-      out_FragColor = vec4(mix(color.rgb, result, intensity), color.a);
-    }
-  `,
-};

src/ui/applicationShell.js

@@ -1598,7 +1598,7 @@ export class StyleManager extends ShellFacade {
    * 2. Crossfades the new shader stage intensity to 1.
    * 3. Applies style preset defaults (bloom/sharpen/HUD) if applyPreset is true.
    * 4. Updates button highlights, style indicator, slider panel, HUD, and detection overlay.
-   * @param {string} styleName - Target style ('normal'|'retro'|'surveillance'|'thermal'|'anime'|'noir'|'snow').
+   * @param {string} styleName - Target style ('normal'|'retro'|'surveillance'|'thermal'|'anime'|'noir').
    * @param {object} [options]
    * @param {boolean} [options.applyPreset=true] - Whether to apply STYLE_PRESET_DEFAULTS for the new style.
    * @param {boolean} [options.userInitiated=false] - Whether a direct user preset choice owns the Cyber exit style.

src/ui/applicationShortcuts.js

@@ -5,7 +5,6 @@ const STYLE_KEYS = Object.freeze({
   4: 'thermal',
   5: 'anime',
   6: 'noir',
-  7: 'snow',
 });
 
 /**

src/ui/cockpitInstruments.js

@@ -268,7 +268,6 @@ export function setVisionMode(mode, { revealParameters = false } = {}) {
     thermal: t('FLIR'),
     anime: t('ANIME'),
     noir: t('NOIR'),
-    snow: t('SNOW'),
   };
   const names = {
     optical: t('Normal'),
@@ -277,7 +276,6 @@ export function setVisionMode(mode, { revealParameters = false } = {}) {
     thermal: t('Thermal'),
     anime: t('Anime'),
     noir: t('Noir'),
-    snow: t('Snow'),
   };
   if (this.visionCurrent) {
     this.visionCurrent.dataset.cockpitVision = next;

src/ui/cyberTheme.test.mjs

@@ -105,7 +105,6 @@ test('visual styles retain Cyber through real preset application without droppin
     'normal',
     'noir',
     'anime',
-    'snow',
     'thermal',
     'retro',
   ]) {
@@ -162,8 +161,8 @@ test('a preset explicitly selected in Cyber survives exit and resets for re-entr
   owner.setStyle('noir');
 
   owner._setHudVariant('cyber', { applyVisualDefaults: true });
-  owner.setStyle('snow', { userInitiated: true });
-  assert.equal(owner.activeStyle, 'snow');
+  owner.setStyle('anime', { userInitiated: true });
+  assert.equal(owner.activeStyle, 'anime');
   assert.equal(owner._preCyberStyle, 'noir');
   assert.equal(owner._cyberStyleUserSelected, true);
 
@@ -172,16 +171,16 @@ test('a preset explicitly selected in Cyber survives exit and resets for re-entr
   assert.equal(owner._preCyberStyle, 'noir');
   owner._setHudVariant('operator', { applyVisualDefaults: true });
   assert.equal(hud.getVariant(), 'operator');
-  assert.equal(owner.activeStyle, 'snow');
+  assert.equal(owner.activeStyle, 'anime');
   assert.equal(owner._preCyberStyle, null);
   assert.equal(owner._cyberStyleUserSelected, false);
 
   // A later untouched Cyber round trip restores the new pre-Cyber preset.
   owner._setHudVariant('cyber', { applyVisualDefaults: true });
   assert.equal(owner.activeStyle, 'thermal');
-  assert.equal(owner._preCyberStyle, 'snow');
+  assert.equal(owner._preCyberStyle, 'anime');
   owner._setHudVariant('minimal', { applyVisualDefaults: true });
-  assert.equal(owner.activeStyle, 'snow');
+  assert.equal(owner.activeStyle, 'anime');
 });
 
 test('an explicit same-value FLIR choice is preserved on Cyber exit', (t) => {
@@ -200,15 +199,15 @@ test('an authoritative same-Cyber reset clears local preset ownership', (t) => {
   const { owner } = styleOwner(t, 'tactical');
   owner.setStyle('noir');
   owner._setHudVariant('cyber', { applyVisualDefaults: true });
-  owner.setStyle('snow', { userInitiated: true });
+  owner.setStyle('anime', { userInitiated: true });
   assert.equal(owner._cyberStyleUserSelected, true);
 
   owner._setHudVariant('cyber');
-  assert.equal(owner.activeStyle, 'snow');
+  assert.equal(owner.activeStyle, 'anime');
   assert.equal(owner._preCyberStyle, null);
   assert.equal(owner._cyberStyleUserSelected, false);
   owner._setHudVariant('operator', { applyVisualDefaults: true });
-  assert.equal(owner.activeStyle, 'snow');
+  assert.equal(owner.activeStyle, 'anime');
 });
 
 test('Display and voice HUD routes preserve explicit Cyber entry and exit authority', async (t) => {
@@ -226,10 +225,10 @@ test('Display and voice HUD routes preserve explicit Cyber entry and exit author
   const display = makeOwner();
   const hudLayout = new EventTarget();
   hudLayout.value = 'cyber';
-  const snowButton = new EventTarget();
-  snowButton.dataset = { style: 'snow' };
+  const animeButton = new EventTarget();
+  animeButton.dataset = { style: 'anime' };
   const controls = bindDisplayControls({
-    elements: { hudLayout, styleButtons: [snowButton] },
+    elements: { hudLayout, styleButtons: [animeButton] },
     actions: {
       setHudLayout: (value) => display.owner.setHudLayout(value),
       setStyle: (value) =>
@@ -239,12 +238,12 @@ test('Display and voice HUD routes preserve explicit Cyber entry and exit author
   hudLayout.dispatchEvent(new Event('change'));
   assert.equal(display.hud.getVariant(), 'cyber');
   assert.equal(display.owner.activeStyle, 'thermal');
-  snowButton.dispatchEvent(new Event('click'));
-  assert.equal(display.owner.activeStyle, 'snow');
+  animeButton.dispatchEvent(new Event('click'));
+  assert.equal(display.owner.activeStyle, 'anime');
   hudLayout.value = 'operator';
   hudLayout.dispatchEvent(new Event('change'));
   assert.equal(display.hud.getVariant(), 'operator');
-  assert.equal(display.owner.activeStyle, 'snow');
+  assert.equal(display.owner.activeStyle, 'anime');
   controls.destroy();
 
   const voice = makeOwner();
@@ -263,13 +262,13 @@ test('Display and voice HUD routes preserve explicit Cyber entry and exit author
   assert.equal(entered.ok, true);
   assert.equal(voice.hud.getVariant(), 'cyber');
   assert.equal(voice.owner.activeStyle, 'thermal');
-  const selected = await runVoiceAction('set_visual_style', { style: 'snow' });
+  const selected = await runVoiceAction('set_visual_style', { style: 'anime' });
   assert.equal(selected.ok, true);
-  assert.equal(voice.owner.activeStyle, 'snow');
+  assert.equal(voice.owner.activeStyle, 'anime');
   const exited = await runVoiceAction('set_hud', { layout: 'operator' });
   assert.equal(exited.ok, true);
   assert.equal(voice.hud.getVariant(), 'operator');
-  assert.equal(voice.owner.activeStyle, 'snow');
+  assert.equal(voice.owner.activeStyle, 'anime');
 });
 
 test('scope choice and expanded feather survive every HUD layout and both restore paths', async (t) => {
@@ -301,11 +300,18 @@ test('scope choice and expanded feather survive every HUD layout and both restor
   assert.equal(owner._scopeFeatherSlider.value, '200');
 });
 
+test('a scene shot saved with the retired Snow style plays on Normal', async (t) => {
+  const { owner } = styleOwner(t, 'tactical');
+  owner.setStyle('noir');
+  await owner.applyVisualState({ style: 'snow' });
+  assert.equal(owner.activeStyle, 'normal');
+});
+
 test('scene and share HUD transitions do not restore a local pre-Cyber preset', async (t) => {
   const { owner, hud } = styleOwner(t, 'tactical');
   owner.setStyle('noir');
   owner._setHudVariant('cyber', { applyVisualDefaults: true });
-  owner.setStyle('snow', { userInitiated: true });
+  owner.setStyle('anime', { userInitiated: true });
   assert.equal(owner._cyberStyleUserSelected, true);
 
   await owner.applyVisualState({ style: 'retro', hud: { variant: 'cyber' } });
@@ -319,7 +325,7 @@ test('scene and share HUD transitions do not restore a local pre-Cyber preset',
   owner.setStyle('surveillance');
   owner._setHudVariant('cyber', { applyVisualDefaults: true });
   assert.equal(owner._preCyberStyle, 'surveillance');
-  owner.setStyle('snow', { userInitiated: true });
+  owner.setStyle('anime', { userInitiated: true });
   await owner.restoreShareState({
     style: 'thermal',
     hudVariant: 'cyber',

src/ui/scenePresentation.js

@@ -12,7 +12,6 @@ const STYLE_LABELS = Object.freeze({
   thermal: msg('FLIR'),
   anime: msg('ANIME'),
   noir: msg('NOIR'),
-  snow: msg('SNOW'),
 });
 
 const DETECTION_MODE_LABELS = Object.freeze({

src/ui/styles/cyber.css

@@ -747,12 +747,6 @@
   .btn-icon::before {
   content: '◐';
 }
-:root[data-ui-theme='cyber']
-  #command-dock
-  .style-btn[data-style='snow']
-  .btn-icon::before {
-  content: '❄︎';
-}
 
 :root[data-ui-theme='cyber'] :where(#bloom-toggle, #sharpen-toggle) {
   font-size: 0;

src/ui/templates/command-dock.html

@@ -43,11 +43,6 @@
           <span class="btn-label" data-i18n>Noir</span>
           <span class="btn-key">6</span>
         </button>
-        <button class="style-btn" data-style="snow" title="Add a cold, snowy whiteout treatment to the scene." data-i18n-title>
-          <span class="btn-icon">❄</span>
-          <span class="btn-label" data-i18n>Snow</span>
-          <span class="btn-key">7</span>
-        </button>
       </div>
       <section class="map-source-section" aria-labelledby="map-source-label">
         <div class="map-source-heading">

src/ui/visualEffects.test.mjs

@@ -77,7 +77,7 @@ test('construction is inert and initialization creates one owned pipeline', () =
   assert.equal(f.frames.size, 0);
   f.effects.initStyles();
   f.effects.initPostProcess();
-  assert.equal(f.stages.size, 7);
+  assert.equal(f.stages.size, 6);
   assert.ok(
     Object.values(f.effects.stages).every(
       (stage) => !stage.enabled && stage.uniforms.intensity === 0,
@@ -85,7 +85,7 @@ test('construction is inert and initialization creates one owned pipeline', () =
   );
   f.effects.initStyles();
   f.effects.initPostProcess();
-  assert.equal(f.stages.size, 7);
+  assert.equal(f.stages.size, 6);
   f.effects.destroy();
 });
 
@@ -252,7 +252,7 @@ test('stop revokes pending work immediately but retains stages until final destr
   assert.equal(f.frames.size, 0);
   assert.equal(
     f.stages.size,
-    7,
+    6,
     'Context and Cockpit may still be releasing these stages',
   );
   const intensity = f.effects.stages.retro.uniforms.intensity;
@@ -281,7 +281,7 @@ test('destroying one instance does not remove another pipeline or clock', () =>
   a.effects.destroy();
   b.tick(250);
   assert.equal(a.stages.size, 0);
-  assert.equal(b.stages.size, 6);
+  assert.equal(b.stages.size, 5);
   assert.equal(b.effects.stages.retro.uniforms.intensity, 0.5);
   b.effects.destroy();
 });

src/ui/visualInput.test.mjs

@@ -73,13 +73,13 @@ function shortcuts() {
   return { documentRef, searchInput, calls, controller, press };
 }
 
-test('number keys retain the seven style mappings', () => {
+test('number keys retain the six style mappings', () => {
   const f = shortcuts();
   for (const key of ['1', '2', '3', '4', '5', '6', '7', '8', 'Space'])
     f.press(key);
   assert.deepEqual(
     f.calls,
-    ['normal', 'retro', 'surveillance', 'thermal', 'anime', 'noir', 'snow'].map(
+    ['normal', 'retro', 'surveillance', 'thermal', 'anime', 'noir'].map(
       (style) => ['setStyle', style],
     ),
   );

src/ui/visualPresets.js

@@ -1,7 +1,6 @@
 import { retroShader } from '../styles/retro.js';
 import { animeShader } from '../styles/anime.js';
 import { noirShader } from '../styles/noir.js';
-import { snowShader } from '../styles/snow.js';
 import { nightVisionShader } from '../styles/surveillance.js';
 import { thermalShader } from '../styles/thermal.js';
 import { BLOOM_INTENSITY_DEFAULT } from '../bloom.js';
@@ -16,9 +15,14 @@ export const STYLES = {
   thermal: thermalShader,
   anime: animeShader,
   noir: noirShader,
-  snow: snowShader,
 };
 
+/**
+ * Styles the app no longer offers. A share link, scene or shot that names one
+ * opens on Normal instead of keeping whatever style was already showing.
+ */
+export const RETIRED_STYLES = Object.freeze(['snow']);
+
 /**
  * The tactical detection look: Dense at 75%.
  *
@@ -156,5 +160,4 @@ export const STYLE_STATUS_LABELS = {
   thermal: msg('FLIR'),
   anime: msg('ANIME'),
   noir: msg('NOIR'),
-  snow: msg('SNOW'),
 };

src/ui/visualSettings.js

@@ -1,6 +1,6 @@
 import { clampScopeFeatherPct } from '../scopeMaskPolicy.js';
 import { syncScopeControls } from './displayControls.js';
-import { STYLE_STATUS_LABELS } from './visualPresets.js';
+import { RETIRED_STYLES, STYLE_STATUS_LABELS } from './visualPresets.js';
 import { syncSegmentedControl } from './segmentedControl.js';
 import { t } from '../i18n/index.js';
 import { UiLifetime } from './uiLifetime.js';
@@ -1272,8 +1272,9 @@ export class VisualSettings {
     const superseded = () => typeof isCurrent === 'function' && !isCurrent();
     if (superseded()) return false;
 
-    if (state.style && state.style !== this.activeStyle) {
-      this.setStyle(state.style, { applyPreset: false });
+    const style = RETIRED_STYLES.includes(state.style) ? 'normal' : state.style;
+    if (style && style !== this.activeStyle) {
+      this.setStyle(style, { applyPreset: false });
     }
 
     const bloomState = state.bloom || {};

src/view/index.js

@@ -20,7 +20,6 @@ export const STYLE_URL_NAMES = Object.freeze({
   thermal: 'flir',
   anime: 'anime',
   noir: 'noir',
-  snow: 'snow',
 });
 
 const STYLES_BY_URL_NAME = Object.freeze(

src/voice/actionSchemas.js

@@ -248,15 +248,7 @@ const schemas = [
       properties: {
         style: {
           type: 'string',
-          enum: [
-            'normal',
-            'retro',
-            'surveillance',
-            'thermal',
-            'anime',
-            'noir',
-            'snow',
-          ],
+          enum: ['normal', 'retro', 'surveillance', 'thermal', 'anime', 'noir'],
         },
       },
       required: ['style'],

src/voice/actionSchemas.test.mjs

@@ -45,7 +45,8 @@ test('the complete Realtime tool payload pins the manifest-generated layer relea
     // S2 GhostMaps extends the generated layer enums.
     // Panel adds named voice targets and timeout; shared Panel/Cockpit guidance
     // is consolidated without changing either feature's arguments.
-    '9ee82c4214499280c208c93751b19d7b724c81b7727a2d0c6dab0184749fbe15',
+    // Snow leaves the set_visual_style enum.
+    '724a82b538a12a994401fc941e175625b032bfb96109934e091d3ef5b9600909',
   );
 });
 
@@ -169,6 +170,18 @@ test('all legacy action arguments are byte-identical after removing the delibera
   // Cyber adds one HUD layout.
   const hud = property('set_hud').layout;
   hud.enum = hud.enum.filter((layout) => layout !== 'cyber');
+  // Snow is retired from set_visual_style; restore it to keep the legacy pin.
+  const visualStyle = legacy.find((tool) => tool.name === 'set_visual_style')
+    .parameters.properties.style;
+  assert.deepEqual(visualStyle.enum, [
+    'normal',
+    'retro',
+    'surveillance',
+    'thermal',
+    'anime',
+    'noir',
+  ]);
+  visualStyle.enum = [...visualStyle.enum, 'snow'];
   // Derived by applying the same removals to the 4b56d0e9 actionSchemas.
   assert.equal(
     createHash('sha256').update(JSON.stringify(legacy)).digest('hex'),

src/voice/gevActions.js

@@ -66,7 +66,6 @@ const ALLOWED_STYLES = new Set([
   'thermal',
   'anime',
   'noir',
-  'snow',
 ]);
 const PANEL_ALIASES = new Map([
   ['data', 'data-panel'],