diff --git a/src/app/components/nav/styles.css.ts b/src/app/components/nav/styles.css.ts
index 5c3f37b0..5156ed41 100644
--- a/src/app/components/nav/styles.css.ts
+++ b/src/app/components/nav/styles.css.ts
@@ -53,6 +53,10 @@ export const NavCategoryHeader = style({
     '&&': { paddingLeft: 0 },
   },
   '@media': {
+    // A phone's section header is as tall as its 44 px button, so it does not overlap the next row.
+    'screen and (max-width: 750px)': {
+      selectors: { '&&': { minHeight: toRem(44), height: toRem(44) } },
+    },
     // Category labels sit on the scene like the rows do, and need a wash to be read (wide screens;
     // a phone's list is plain text).
     'screen and (min-width: 751px)': {
@@ -117,6 +121,8 @@ const NavItemBase = style({
     [PHONE]: {
       backgroundColor: 'transparent',
       borderRadius: 0,
+      // The row is as tall as the 44 px tap target inside it (EstateNavigator.css.ts), so neighbours do not overlap.
+      minHeight: toRem(44),
     },
     [WIDE]: {
       selectors: {
diff --git a/src/app/features/call-status/CallControl.tsx b/src/app/features/call-status/CallControl.tsx
index 1808be92..3cf38b1f 100644
--- a/src/app/features/call-status/CallControl.tsx
+++ b/src/app/features/call-status/CallControl.tsx
@@ -14,7 +14,7 @@ type MicrophoneButtonProps = {
 function MicrophoneButton({ enabled, onToggle, disabled }: MicrophoneButtonProps) {
   const [micState, toggleMic] = useAsyncCallback(onToggle);
   const loading = micState.status === AsyncStatus.Loading;
-  
+
   return (
     <TooltipProvider
       position="Top"
@@ -164,7 +164,10 @@ export function CallControl({
   const { microphone, video, sound, screenshare } = useCallControlState(callEmbed.control);
   const setCallEmbed = useSetAtom(callEmbedAtom);
 
-  const handleMicrophoneToggle = useCallback(() => callEmbed.control.toggleMicrophone(), [callEmbed]);
+  const handleMicrophoneToggle = useCallback(
+    () => callEmbed.control.toggleMicrophone(),
+    [callEmbed]
+  );
   const handleVideoToggle = useCallback(() => callEmbed.control.toggleVideo(), [callEmbed]);
 
   const [hangupState, hangup] = useAsyncCallback(
@@ -195,11 +198,7 @@ export function CallControl({
           disabled={!callJoined}
         />
         {!compact && <StatusDivider />}
-        <VideoButton
-          enabled={video}
-          onToggle={handleVideoToggle}
-          disabled={!callJoined}
-        />
+        <VideoButton enabled={video} onToggle={handleVideoToggle} disabled={!callJoined} />
         {!compact && (
           <ScreenShareButton
             enabled={screenshare}
diff --git a/src/app/features/call/CallControls.tsx b/src/app/features/call/CallControls.tsx
index 469b47a8..fb56adca 100644
--- a/src/app/features/call/CallControls.tsx
+++ b/src/app/features/call/CallControls.tsx
@@ -71,7 +71,10 @@ export function CallControls({ callEmbed }: CallControlsProps) {
     setCords(undefined);
   };
 
-  const handleMicrophoneToggle = useCallback(() => callEmbed.control.toggleMicrophone(), [callEmbed]);
+  const handleMicrophoneToggle = useCallback(
+    () => callEmbed.control.toggleMicrophone(),
+    [callEmbed]
+  );
   const handleVideoToggle = useCallback(() => callEmbed.control.toggleVideo(), [callEmbed]);
 
   const [hangupState, hangup] = useAsyncCallback(
@@ -97,10 +100,7 @@ export function CallControls({ callEmbed }: CallControlsProps) {
       >
         <Box alignItems="Center" gap="Inherit" grow="Yes" direction={compact ? 'Column' : 'Row'}>
           <Box shrink="No" alignItems="Inherit" justifyContent="Inherit" gap="200">
-            <MicrophoneButton
-              enabled={microphone}
-              onToggle={handleMicrophoneToggle}
-            />
+            <MicrophoneButton enabled={microphone} onToggle={handleMicrophoneToggle} />
             <SoundButton enabled={sound} onToggle={() => callEmbed.control.toggleSound()} />
           </Box>
           {!compact && <ControlDivider />}
diff --git a/src/app/features/call/Controls.tsx b/src/app/features/call/Controls.tsx
index 6aa94ff5..459904f6 100644
--- a/src/app/features/call/Controls.tsx
+++ b/src/app/features/call/Controls.tsx
@@ -18,7 +18,7 @@ type MicrophoneButtonProps = {
 export function MicrophoneButton({ enabled, onToggle }: MicrophoneButtonProps) {
   const [micState, toggleMic] = useAsyncCallback(onToggle);
   const loading = micState.status === AsyncStatus.Loading;
-  
+
   return (
     <TooltipProvider
       position="Top"
diff --git a/src/app/features/call/PrescreenControls.tsx b/src/app/features/call/PrescreenControls.tsx
index ec779b83..d0f5631c 100644
--- a/src/app/features/call/PrescreenControls.tsx
+++ b/src/app/features/call/PrescreenControls.tsx
@@ -26,7 +26,6 @@ export function PrescreenControls({ canJoin }: PrescreenControlsProps) {
   const { microphone, video, sound, toggleMicrophone, toggleVideo, toggleSound } =
     useCallPreferences();
 
-
   const handleMicrophoneToggle = useCallback(async () => toggleMicrophone(), [toggleMicrophone]);
   const handleVideoToggle = useCallback(async () => toggleVideo(), [toggleVideo]);
 
diff --git a/src/app/features/desk/DeskView.css.ts b/src/app/features/desk/DeskView.css.ts
index 4c7d08a7..042f0644 100644
--- a/src/app/features/desk/DeskView.css.ts
+++ b/src/app/features/desk/DeskView.css.ts
@@ -30,13 +30,29 @@ export const Title = style({
 export const Fold = style({
   all: 'unset',
   cursor: 'pointer',
-  display: 'block',
   width: '100%',
   minHeight: 44,
   boxSizing: 'border-box',
+  display: 'flex',
+  alignItems: 'center',
+  justifyContent: 'space-between',
+  gap: config.space.S200,
+  // A folded row says it can be opened: a chevron at the end, turned down while the row is open.
+  selectors: {
+    '&::after': {
+      content: '"›"',
+      flexShrink: 0,
+      fontSize: '1.5em',
+      lineHeight: 1,
+      transition: 'transform 120ms',
+    },
+    '&[aria-expanded=true]::after': { transform: 'rotate(90deg)' },
+  },
 });
 
-export const Quiet = style({ opacity: config.opacity.P300, margin: `${config.space.S100} 0` });
+// Quiet lines (age, who it waits on, helper text) were measured at 4.5 over the day sky and 3.9-4.0 at dusk and night
+// with the theme's 0.75 (taps2/desk-REPORT.md); 0.9 clears 4.5 in all three.
+export const Quiet = style({ opacity: 0.9, margin: `${config.space.S100} 0` });
 export const Body = style({ whiteSpace: 'pre-wrap', margin: `${config.space.S200} 0` });
 export const Options = style({ margin: 0, padding: 0, listStyle: 'none' });
 export const Option = style({ padding: `${config.space.S100} 0` });
@@ -50,8 +66,9 @@ export const Note = style({
   font: 'inherit',
   color: 'inherit',
   background: 'none',
-  border: `1px solid ${color.Background.ContainerLine}`,
-  opacity: config.opacity.Disabled,
+  // The note is disabled (slice 1). Its border is a UI boundary (3:1 wanted; the faint line under the 0.38 disabled
+  // opacity measured 2.0), so it is drawn dashed in the full ink and not faded.
+  border: '1px dashed currentColor',
 });
 
 /** Sticky beside the rows on wide screens; a small fixed corner image on phones. */
@@ -97,3 +114,9 @@ export const BoothLine = style({
     },
   },
 });
+
+/** The recorded rulings sit on the dark ridge in every sky; they carry their own ground (scrimStyle). */
+export const Recorded = style({
+  marginTop: config.space.S400,
+  padding: `${config.space.S200} ${config.space.S300}`,
+});
diff --git a/src/app/features/desk/DeskView.test.tsx b/src/app/features/desk/DeskView.test.tsx
index 9c60ed53..1bc7aa59 100644
--- a/src/app/features/desk/DeskView.test.tsx
+++ b/src/app/features/desk/DeskView.test.tsx
@@ -1,14 +1,19 @@
 import React from 'react';
 import { renderToStaticMarkup } from 'react-dom/server';
 import { MemoryRouter } from 'react-router-dom';
-import { afterEach, describe, expect, it } from 'vitest';
+import { afterEach, describe, expect, it, vi } from 'vitest';
 import { ScreenSize, ScreenSizeProvider } from '../../hooks/useScreenSize';
+import { SkyInkContextProvider } from '../../hooks/useTheme';
+import { SCRIM_GROUND, SCRIM_INK } from '../scene/skyInk';
 import { DeskEntry } from './DeskEntry';
 import { DeskView, SIGN_IN_NOTE } from './DeskView';
 import { ForkList } from './forkContract';
 import { STATES } from './fixtures';
 import { setDeskSource } from './source';
 
+// useTheme reads the stored settings when it loads.
+vi.hoisted(() => vi.stubGlobal('localStorage', { getItem: () => null, setItem: () => undefined }));
+
 const view = (
   state: keyof typeof STATES | 'unpublished',
   size: ScreenSize,
@@ -66,6 +71,19 @@ describe('DeskView', () => {
     expect(html).toContain('Question done (ruling:done-1)');
     expect(html).not.toContain('Question shut');
   });
+  it('gives the recorded rulings their own ground and ink while a scene runs, none without one', () => {
+    const withScene = renderToStaticMarkup(
+      <ScreenSizeProvider value={ScreenSize.Desktop}>
+        <SkyInkContextProvider value={{ state: 'dusk', phone: false }}>
+          <DeskView mind="void" label="Void" list={STATES.settled} unverified={new Set()} />
+        </SkyInkContextProvider>
+      </ScreenSizeProvider>
+    );
+    // renderToStaticMarkup writes the inline style as the browser would read it back
+    expect(withScene).toContain(SCRIM_GROUND.replace(/, /g, ', '));
+    expect(withScene).toContain(`color:${SCRIM_INK}`);
+    expect(view('settled', ScreenSize.Desktop)).not.toContain('background-color');
+  });
   it('shows each outcome quietly, marks the counted answer, and renders a note only when sent', () => {
     const html = view('answered', ScreenSize.Desktop);
     expect(html).toContain(
@@ -145,7 +163,15 @@ describe("a question's age", () => {
     expect(html('2026-11-11T11:40:00Z')).toContain('raised just now');
   });
   it('shows no age when the card carries none, or an instant that does not parse or is ahead of the clock', () => {
-    ['null', 'yesterday', '2027-01-01T00:00:00Z', '2026-11-06', 'Nov 6 2026', '0', '2026-02-30T00:00:00Z'].forEach((v) => {
+    [
+      'null',
+      'yesterday',
+      '2027-01-01T00:00:00Z',
+      '2026-11-06',
+      'Nov 6 2026',
+      '0',
+      '2026-02-30T00:00:00Z',
+    ].forEach((v) => {
       expect(html(v === 'null' ? null : v)).not.toContain('raised ');
     });
   });
diff --git a/src/app/features/desk/DeskView.tsx b/src/app/features/desk/DeskView.tsx
index f83dcd82..64727799 100644
--- a/src/app/features/desk/DeskView.tsx
+++ b/src/app/features/desk/DeskView.tsx
@@ -4,6 +4,8 @@ import { PoseAvatar } from '../../components/message/pose/PoseAvatar';
 import { MINDS } from '../../components/message/pose/poses';
 import { ScreenSize, useScreenSizeContext } from '../../hooks/useScreenSize';
 import { AnswerRow, Desk, buildDesk, DeskRow } from './buildDesk';
+import { useSkyInk } from '../../hooks/useTheme';
+import { scrimStyle } from '../scene/skyInk';
 import { ForkList } from './forkContract';
 import { deskMood } from './deskMood';
 import { raisedAge } from './age';
@@ -144,6 +146,7 @@ type DeskViewProps = {
 /** One Mind's desk, read-only: a stream of rows, the recorded rulings, and the booth Persona. */
 export function DeskView({ mind, label, list, unverified, now = Date.now() }: DeskViewProps) {
   const desk = buildDesk(list, unverified);
+  const skyInk = useSkyInk();
   // Slice 1 has no session, so nothing on the desk is the viewer's answer yet.
   const mood = deskMood(desk.counts.open, 0);
   return (
@@ -166,7 +169,7 @@ export function DeskView({ mind, label, list, unverified, now = Date.now() }: De
         )}
       </div>
       {desk.recorded.length > 0 && (
-        <>
+        <div className={css.Recorded} style={scrimStyle(skyInk)}>
           <h3 className={css.Title}>Recorded as rulings</h3>
           <ul className={css.Options}>
             {desk.recorded.map((r) => (
@@ -175,7 +178,7 @@ export function DeskView({ mind, label, list, unverified, now = Date.now() }: De
               </li>
             ))}
           </ul>
-        </>
+        </div>
       )}
     </section>
   );
diff --git a/src/app/features/dings/manifest.test.ts b/src/app/features/dings/manifest.test.ts
index 0001e685..722481b1 100644
--- a/src/app/features/dings/manifest.test.ts
+++ b/src/app/features/dings/manifest.test.ts
@@ -109,7 +109,10 @@ describe('v4 manifest against the parser', () => {
 
   it("every voice file is Aqua's v4 render (sha256 prefix)", () => {
     const hash = (file: string) =>
-      createHash('sha256').update(readFileSync(join(DINGS, file))).digest('hex').slice(0, 12);
+      createHash('sha256')
+        .update(readFileSync(join(DINGS, file)))
+        .digest('hex')
+        .slice(0, 12);
     expect(Object.keys(V4_SHA).length).toBe(VOICES.length * MOTIFS.length);
     Object.entries(V4_SHA).forEach(([k, want]) => expect(hash(`senders/${k}.ogg`)).toBe(want));
   });
diff --git a/src/app/features/lobby/LobbyHero.tsx b/src/app/features/lobby/LobbyHero.tsx
index 1cd0b8e2..22774476 100644
--- a/src/app/features/lobby/LobbyHero.tsx
+++ b/src/app/features/lobby/LobbyHero.tsx
@@ -22,7 +22,9 @@ export function LobbyHero() {
   const name = useRoomName(space);
   const topic = useRoomTopic(space);
   const avatarMxc = useRoomAvatar(space);
-  const avatarUrl = avatarMxc ? mxcUrlToHttp(mx, avatarMxc, useAuthentication, 96, 96, 'crop') ?? undefined : undefined;
+  const avatarUrl = avatarMxc
+    ? mxcUrlToHttp(mx, avatarMxc, useAuthentication, 96, 96, 'crop') ?? undefined
+    : undefined;
 
   return (
     <PageHero
diff --git a/src/app/features/room/RoomTrainingLine.tsx b/src/app/features/room/RoomTrainingLine.tsx
index fd410979..4cddfc75 100644
--- a/src/app/features/room/RoomTrainingLine.tsx
+++ b/src/app/features/room/RoomTrainingLine.tsx
@@ -4,7 +4,7 @@ import React from 'react';
 import { useStateEvent } from '../../hooks/useStateEvent';
 import { useClientConfig } from '../../hooks/useClientConfig';
 import { useSkyInk } from '../../hooks/useTheme';
-import { noticeInk } from '../scene/skyInk';
+import { scrimStyle } from '../scene/skyInk';
 import {
   ROOM_NOTICE_EVENT_TYPE,
   parseRoomNotice,
@@ -24,7 +24,8 @@ export function RoomTrainingLine({ room }: { room: Room }) {
       size="T200"
       style={{
         padding: `${config.space.S100} 0`,
-        color: (skyInk && noticeInk(skyInk)) ?? color.SurfaceVariant.OnContainer,
+        color: color.SurfaceVariant.OnContainer,
+        ...scrimStyle(skyInk),
       }}
     >
       {line}
diff --git a/src/app/features/room/RoomViewHeader.css.ts b/src/app/features/room/RoomViewHeader.css.ts
index cff21a99..e342c80c 100644
--- a/src/app/features/room/RoomViewHeader.css.ts
+++ b/src/app/features/room/RoomViewHeader.css.ts
@@ -2,15 +2,14 @@ import { style } from '@vanilla-extract/css';
 import { config } from 'folds';
 import { MOBILE_BREAKPOINT } from '../../hooks/useScreenSize';
 
-// Phone tap target: the topic is an 18 px line under the room name; its button grows 9 px up and 17 px down
-// (44 px to tap; more below because the name is above) and the negative margin keeps the layout where it was.
+// Phone tap target: the topic is an 18 px line directly under the room name (no gap), so its button grows only
+// downward, 26 px (44 px to tap) and the negative margin keeps the layout where it was: growing up would take taps
+// from the name line.
 export const HeaderTopic = style({
   '@media': {
     [`screen and (max-width: ${MOBILE_BREAKPOINT}px)`]: {
-      paddingTop: 9,
-      paddingBottom: 17,
-      marginTop: -9,
-      marginBottom: -17,
+      paddingBottom: 26,
+      marginBottom: -26,
     },
   },
   ':hover': {
diff --git a/src/app/features/scene/SkyStateControl.tsx b/src/app/features/scene/SkyStateControl.tsx
index 30efaa1c..a4313a8f 100644
--- a/src/app/features/scene/SkyStateControl.tsx
+++ b/src/app/features/scene/SkyStateControl.tsx
@@ -15,7 +15,12 @@ import FocusTrap from 'focus-trap-react';
 import { stopPropagation } from '../../utils/keyboard';
 import { useSkyState } from '../../hooks/useSkyState';
 import { SKY_STATES, setSkyState, type SkyState } from './skyState';
-import { HORIZON_CREDIT, WEATHER_CREDIT, WEATHER_CREDIT_URL, WEATHER_DATASET } from './ridge/credits';
+import {
+  HORIZON_CREDIT,
+  WEATHER_CREDIT,
+  WEATHER_CREDIT_URL,
+  WEATHER_DATASET,
+} from './ridge/credits';
 import { useClientConfig } from '../../hooks/useClientConfig';
 import {
   getSceneStyleOverride,
@@ -118,7 +123,11 @@ export function SkyStateControl() {
                 </>
               )}
               {backgroundScene && sceneStyle === 'ridge' && (
-                <Box direction="Column" gap="100" style={{ padding: `${config.space.S200}`, maxWidth: '20rem' }}>
+                <Box
+                  direction="Column"
+                  gap="100"
+                  style={{ padding: `${config.space.S200}`, maxWidth: '20rem' }}
+                >
                   <Text size="L400" priority="300">
                     Data
                   </Text>
diff --git a/src/app/features/scene/creatures.test.ts b/src/app/features/scene/creatures.test.ts
index 938c217f..00dd48ef 100644
--- a/src/app/features/scene/creatures.test.ts
+++ b/src/app/features/scene/creatures.test.ts
@@ -12,7 +12,9 @@ describe('creature scale', () => {
 
   it('draws nothing for a neutral creature, whatever sizeBucket it was sent', () => {
     expect(creatureScale({ neutral: true })).toBeNull();
-    buckets.forEach((sizeBucket) => expect(creatureScale({ sizeBucket, neutral: true })).toBeNull());
+    buckets.forEach((sizeBucket) =>
+      expect(creatureScale({ sizeBucket, neutral: true })).toBeNull()
+    );
   });
 
   it('does not crash or default to medium when a non-neutral creature has no sizeBucket', () => {
diff --git a/src/app/features/scene/creatures.ts b/src/app/features/scene/creatures.ts
index a0b2bd29..d88ce4b5 100644
--- a/src/app/features/scene/creatures.ts
+++ b/src/app/features/scene/creatures.ts
@@ -33,5 +33,7 @@ export const BUCKET_SCALE: Readonly<Record<SizeBucket, number>> = {
 /** The draw scale, or null when nothing is drawn: a neutral creature, or a bucket that is absent or unknown. */
 export function creatureScale(c: Pick<Creature, 'sizeBucket' | 'neutral'>): number | null {
   if (c.neutral || c.sizeBucket === undefined) return null;
-  return Object.prototype.hasOwnProperty.call(BUCKET_SCALE, c.sizeBucket) ? BUCKET_SCALE[c.sizeBucket] : null;
+  return Object.prototype.hasOwnProperty.call(BUCKET_SCALE, c.sizeBucket)
+    ? BUCKET_SCALE[c.sizeBucket]
+    : null;
 }
diff --git a/src/app/features/scene/cssModules.test.ts b/src/app/features/scene/cssModules.test.ts
index 27fd4d4d..7205b822 100644
--- a/src/app/features/scene/cssModules.test.ts
+++ b/src/app/features/scene/cssModules.test.ts
@@ -13,6 +13,8 @@ describe('scene .css.ts files, compiled as the production build compiles them',
   it.each(FILES)('%s compiles with exports vanilla-extract accepts', async (file) => {
     const filePath = `${process.cwd()}/${file}`;
     const { source } = await compile({ filePath, cwd: process.cwd(), identOption: 'debug' });
-    await expect(processVanillaFile({ source, filePath, identOption: 'debug' })).resolves.toBeTypeOf('string');
+    await expect(
+      processVanillaFile({ source, filePath, identOption: 'debug' })
+    ).resolves.toBeTypeOf('string');
   });
 });
diff --git a/src/app/features/scene/ridge/Ridge.test.ts b/src/app/features/scene/ridge/Ridge.test.ts
index 0234e558..cb24f04b 100644
--- a/src/app/features/scene/ridge/Ridge.test.ts
+++ b/src/app/features/scene/ridge/Ridge.test.ts
@@ -818,8 +818,12 @@ describe('endless drift: chunks baked on demand and recycled', () => {
 });
 
 describe('rain in the scene', () => {
-  const rainy = (w: number): SkyColours => ({ ...DAY, physical: makePhysicalSky('day', new Date('2026-06-21T10:40:00Z'), w) });
-  const rainEls = (parent: any) => parent.children.filter((c: any) => c.tag === 'div' && c !== rigOf(parent));
+  const rainy = (w: number): SkyColours => ({
+    ...DAY,
+    physical: makePhysicalSky('day', new Date('2026-06-21T10:40:00Z'), w),
+  });
+  const rainEls = (parent: any) =>
+    parent.children.filter((c: any) => c.tag === 'div' && c !== rigOf(parent));
 
   it('lays one falling tile per rain layer over the ridges when it rains, each slid by its own height on the compositor', () => {
     const { parent, canvas } = host();
diff --git a/src/app/features/scene/ridge/Ridge.ts b/src/app/features/scene/ridge/Ridge.ts
index 8590a833..b0320b1b 100644
--- a/src/app/features/scene/ridge/Ridge.ts
+++ b/src/app/features/scene/ridge/Ridge.ts
@@ -6,7 +6,15 @@ import { skyColours, SkyColours, Srgb } from './skyColour';
 import { paintSky as paintPhysicalSky } from './physicalSky';
 import { activeAt, drawStars, drawTwinkle as paintTwinkle, makeStars, Star } from './stars';
 import { bakeSlice, BakeParams, layerPaint } from './ridgeBake';
-import { LAYERS, LayerSpec, edgeBlur, HORIZON_TRACK_SHIFT, layerSize, scatterAlpha, transmittance } from './ridgeWorld';
+import {
+  LAYERS,
+  LayerSpec,
+  edgeBlur,
+  HORIZON_TRACK_SHIFT,
+  layerSize,
+  scatterAlpha,
+  transmittance,
+} from './ridgeWorld';
 import { hfovDeg } from './horizon';
 import { viewFor, VFOV_DEG } from './skyDome';
 import { drawRainTile, RAIN_TILES } from './rain';
@@ -471,7 +479,13 @@ export function createRidgeScene(opts: RidgeOptions): Scene | null {
    * The rain over everything: per tile, a div of the tile's texture (drawn once) taller than the viewport by one tile, slid down one
    * tile height per loop on the compositor. 'still' draws none (a settled still has no animation to carry it).
    */
-  const startRain = (rain: number, colour: Srgb, w: number, h: number, scale: number): NonNullable<Built['rain']> => {
+  const startRain = (
+    rain: number,
+    colour: Srgb,
+    w: number,
+    h: number,
+    scale: number
+  ): NonNullable<Built['rain']> => {
     const els: HTMLElement[] = [];
     const anims: (Animation | undefined)[] = [];
     RAIN_TILES.forEach((t, k) => {
@@ -498,11 +512,14 @@ export function createRidgeScene(opts: RidgeOptions): Scene | null {
       parent.appendChild(el);
       els.push(el);
       anims.push(
-        el.animate?.([{ transform: 'translate3d(0,0,0)' }, { transform: `translate3d(0,${px}px,0)` }], {
-          duration: t.seconds * 1000,
-          iterations: Infinity,
-          easing: 'linear',
-        })
+        el.animate?.(
+          [{ transform: 'translate3d(0,0,0)' }, { transform: `translate3d(0,${px}px,0)` }],
+          {
+            duration: t.seconds * 1000,
+            iterations: Infinity,
+            easing: 'linear',
+          }
+        )
       );
     });
     return { els, anims };
@@ -606,7 +623,8 @@ export function createRidgeScene(opts: RidgeOptions): Scene | null {
     parent.appendChild(rig);
     layers.forEach((l) => startDrift(l, rotate));
     built.sway = startSway(rig, w, h);
-    if (tier !== 'still' && sky.physical && sky.physical.weather.rain > 0) built.rain = startRain(sky.physical.weather.rain, sky.horizon, w, h, scale);
+    if (tier !== 'still' && sky.physical && sky.physical.weather.rain > 0)
+      built.rain = startRain(sky.physical.weather.rain, sky.horizon, w, h, scale);
     pump();
     syncPlayState();
     return true;
@@ -640,7 +658,9 @@ export function createRidgeScene(opts: RidgeOptions): Scene | null {
   };
 
   function syncPlayState() {
-    const anims = built ? [built.sway, ...built.layers.map((l) => l.anim), ...(built.rain?.anims ?? [])] : [];
+    const anims = built
+      ? [built.sway, ...built.layers.map((l) => l.anim), ...(built.rain?.anims ?? [])]
+      : [];
     anims.forEach((a) => (moving() ? a?.play() : a?.pause()));
     if (!built?.twinkle) return;
     if (moving()) {
diff --git a/src/app/features/scene/ridge/credits.test.ts b/src/app/features/scene/ridge/credits.test.ts
index 633a1b33..887cc2d4 100644
--- a/src/app/features/scene/ridge/credits.test.ts
+++ b/src/app/features/scene/ridge/credits.test.ts
@@ -4,7 +4,7 @@ import { HORIZON_ATTRIBUTION } from './horizon';
 import { WEATHER_ATTRIBUTION } from './weatherFeed';
 
 describe('the credits the Sky menu shows', () => {
-  it('are the sources\' own', () => {
+  it("are the sources' own", () => {
     expect(HORIZON_CREDIT).toBe(HORIZON_ATTRIBUTION);
     expect(WEATHER_CREDIT).toBe(WEATHER_ATTRIBUTION);
   });
diff --git a/src/app/features/scene/ridge/earthAtmosphere.ts b/src/app/features/scene/ridge/earthAtmosphere.ts
index f5350244..cadddbc5 100644
--- a/src/app/features/scene/ridge/earthAtmosphere.ts
+++ b/src/app/features/scene/ridge/earthAtmosphere.ts
@@ -362,7 +362,8 @@ function bakeMultiScatter(mieScale: number, trLut: Lut2): Lut2 {
       const sx = Math.sqrt(Math.max(0, 1 - cosSun * cosSun));
       const sz = cosSun;
       // Hillaire's PLANET_RADIUS_OFFSET: a ray that starts exactly on the ground is degenerate.
-      const height = PLANET_KM + RADIUS_OFFSET_KM + clamp(v, 0, 1) * (TOP_KM - PLANET_KM - RADIUS_OFFSET_KM);
+      const height =
+        PLANET_KM + RADIUS_OFFSET_KM + clamp(v, 0, 1) * (TOP_KM - PLANET_KM - RADIUS_OFFSET_KM);
       const sumMs = [0, 0, 0];
       const sumL = [0, 0, 0];
       for (let a = 0; a < dirs; a++) {
@@ -410,7 +411,11 @@ function bakeMultiScatter(mieScale: number, trLut: Lut2): Lut2 {
  * Sky-view LUT axes (Hillaire's non-linear mapping, upper hemisphere only: nothing below the horizon is drawn). y: view zenith angle
  * from 0 to the horizon's, squared toward it; x: the azimuth from the sun, the cosine mapped `-(2 c^2 - 1)`.
  */
-function skyViewParamsToUv(viewCos: number, cosFromSun: number, horizonZenith: number): [number, number] {
+function skyViewParamsToUv(
+  viewCos: number,
+  cosFromSun: number,
+  horizonZenith: number
+): [number, number] {
   const zen = Math.acos(clamp(viewCos, -1, 1));
   let coord = 1 - clamp(zen / horizonZenith, 0, 1);
   coord = Math.sqrt(coord);
@@ -494,7 +499,14 @@ export function bakeAtmosphere(opts: AtmosphereOptions): Atmosphere {
   const horizonZenith = PI - beta;
   const transmittance = bakeTransmittance(mieScale);
   const multiScatter = bakeMultiScatter(mieScale, transmittance);
-  const skyView = bakeSkyView(sunCos, observerKm, mieScale, transmittance, multiScatter, horizonZenith);
+  const skyView = bakeSkyView(
+    sunCos,
+    observerKm,
+    mieScale,
+    transmittance,
+    multiScatter,
+    horizonZenith
+  );
   const tmp = [0, 0, 0];
   const trv = [0, 0, 0];
   const atm: Atmosphere = {
@@ -514,7 +526,11 @@ export function bakeAtmosphere(opts: AtmosphereOptions): Atmosphere {
       out[2] = trv[2];
     },
     radiance(viewCos, cosFromSun, out) {
-      const [x, y] = skyViewParamsToUv(Math.max(viewCos, Math.cos(horizonZenith)), cosFromSun, horizonZenith);
+      const [x, y] = skyViewParamsToUv(
+        Math.max(viewCos, Math.cos(horizonZenith)),
+        cosFromSun,
+        horizonZenith
+      );
       sampleTexel(skyView, x * (skyView.w - 1), y * (skyView.h - 1), tmp);
       out[0] = tmp[0];
       out[1] = tmp[1];
diff --git a/src/app/features/scene/ridge/horizon.test.ts b/src/app/features/scene/ridge/horizon.test.ts
index 092d5835..0061bab1 100644
--- a/src/app/features/scene/ridge/horizon.test.ts
+++ b/src/app/features/scene/ridge/horizon.test.ts
@@ -21,7 +21,10 @@ describe('the baked horizon', () => {
     expect(horizonDistanceKm(305)).toBeGreaterThan(1);
   });
   it('interpolates between samples and returns unit normals', () => {
-    expect(horizonElevation(100.25)).toBeCloseTo((bake.elevationDeg[200] + bake.elevationDeg[201]) / 2, 6);
+    expect(horizonElevation(100.25)).toBeCloseTo(
+      (bake.elevationDeg[200] + bake.elevationDeg[201]) / 2,
+      6
+    );
     expect(Math.hypot(...horizonNormal(250))).toBeCloseTo(1, 6);
   });
 });
diff --git a/src/app/features/scene/ridge/horizon.ts b/src/app/features/scene/ridge/horizon.ts
index 82265a77..89d896bc 100644
--- a/src/app/features/scene/ridge/horizon.ts
+++ b/src/app/features/scene/ridge/horizon.ts
@@ -8,7 +8,7 @@ const N = bake.elevationDeg.length;
 
 /** Index pair and weight of an azimuth (degrees clockwise from north) on the baked ring. */
 function at(azimuth: number): [number, number, number] {
-  const f = ((((azimuth / bake.stepDeg) % N) + N) % N);
+  const f = (((azimuth / bake.stepDeg) % N) + N) % N;
   const i = Math.floor(f);
   return [i, (i + 1) % N, f - i];
 }
diff --git a/src/app/features/scene/ridge/horizonLayer.test.ts b/src/app/features/scene/ridge/horizonLayer.test.ts
index 8ed27e4c..b034d03c 100644
--- a/src/app/features/scene/ridge/horizonLayer.test.ts
+++ b/src/app/features/scene/ridge/horizonLayer.test.ts
@@ -25,7 +25,9 @@ describe('the horizon layer', () => {
   });
 
   it('stays in 0..1 and covers a real range of shape, not a line', () => {
-    const v = Array.from({ length: 200 }, (_, i) => layerProfile(far, -0.06 + (i / 200) * 1.2, { azimuthDeg: 305, hfovDeg: view.hfovDeg }));
+    const v = Array.from({ length: 200 }, (_, i) =>
+      layerProfile(far, -0.06 + (i / 200) * 1.2, { azimuthDeg: 305, hfovDeg: view.hfovDeg })
+    );
     expect(Math.min(...v)).toBeGreaterThanOrEqual(0);
     expect(Math.max(...v)).toBeLessThanOrEqual(1);
     expect(Math.max(...v) - Math.min(...v)).toBeGreaterThan(0.2);
@@ -43,7 +45,7 @@ describe('the horizon layer', () => {
 });
 
 describe('weather in the layers', () => {
-  it('mist multiplies the layers\' own, and clear air leaves it alone', () => {
+  it("mist multiplies the layers' own, and clear air leaves it alone", () => {
     const base = skyColours();
     const day = new Date('2026-06-21T10:40:00Z');
     const clear = layerPaint(LAYERS[1], { ...base, physical: makePhysicalSky('day', day, 0) });
diff --git a/src/app/features/scene/ridge/physicalSky.test.ts b/src/app/features/scene/ridge/physicalSky.test.ts
index bb8c75a2..be12945e 100644
--- a/src/app/features/scene/ridge/physicalSky.test.ts
+++ b/src/app/features/scene/ridge/physicalSky.test.ts
@@ -10,7 +10,8 @@ const lin = (v: number): number => {
   const c = v / 255;
   return c <= 0.04045 ? c / 12.92 : ((c + 0.055) / 1.055) ** 2.4;
 };
-const luma = (d: Uint8ClampedArray, i: number): number => 0.2126 * lin(d[i]) + 0.7152 * lin(d[i + 1]) + 0.0722 * lin(d[i + 2]);
+const luma = (d: Uint8ClampedArray, i: number): number =>
+  0.2126 * lin(d[i]) + 0.7152 * lin(d[i + 1]) + 0.0722 * lin(d[i + 2]);
 
 const DAYS = ['2026-03-20', '2026-06-21', '2026-09-23', '2026-12-21'];
 const WEATHER = [0, 0.3, 0.55, 0.75, 1];
@@ -21,28 +22,31 @@ const VIEWPORTS: [number, number][] = [
   [390, 844],
 ];
 
-describe.each(['day', 'dusk', 'night'] as FixedSkyState[])('the %s sky stays inside its backdrop bounds', (state) => {
-  it('over weather, season and viewport shape', () => {
-    const b = skyBackdrop(state);
-    let lo = 2;
-    let hi = -1;
-    for (const day of DAYS) {
-      for (const w of WEATHER) {
-        const sky = makePhysicalSky(state, new Date(`${day}T10:40:00Z`), w);
-        for (const [vw, vh] of VIEWPORTS) {
-          const px = paintSky(sky, vw, vh);
-          for (let i = 0; i < px.w * px.h * 4; i += 4) {
-            const l = luma(px.data, i);
-            lo = Math.min(lo, l);
-            hi = Math.max(hi, l);
+describe.each(['day', 'dusk', 'night'] as FixedSkyState[])(
+  'the %s sky stays inside its backdrop bounds',
+  (state) => {
+    it('over weather, season and viewport shape', () => {
+      const b = skyBackdrop(state);
+      let lo = 2;
+      let hi = -1;
+      for (const day of DAYS) {
+        for (const w of WEATHER) {
+          const sky = makePhysicalSky(state, new Date(`${day}T10:40:00Z`), w);
+          for (const [vw, vh] of VIEWPORTS) {
+            const px = paintSky(sky, vw, vh);
+            for (let i = 0; i < px.w * px.h * 4; i += 4) {
+              const l = luma(px.data, i);
+              lo = Math.min(lo, l);
+              hi = Math.max(hi, l);
+            }
           }
         }
       }
-    }
-    expect(lo).toBeGreaterThanOrEqual(b.darkest);
-    expect(hi).toBeLessThanOrEqual(b.lightest);
-  });
-});
+      expect(lo).toBeGreaterThanOrEqual(b.darkest);
+      expect(hi).toBeLessThanOrEqual(b.lightest);
+    });
+  }
+);
 
 describe('weather in the sky', () => {
   it('overcast is cloud: less blue and less contrast than clear air at the same sun', () => {
@@ -70,14 +74,21 @@ describe('weather in the sky', () => {
 
 describe('the sun disc', () => {
   it('keeps the display floor the dark link was fitted to, at every hour it is drawn', () => {
-    const lin = (c: number) => (c / 255 <= 0.04045 ? c / 255 / 12.92 : ((c / 255 + 0.055) / 1.055) ** 2.4);
+    const lin = (c: number) =>
+      c / 255 <= 0.04045 ? c / 255 / 12.92 : ((c / 255 + 0.055) / 1.055) ** 2.4;
     let drawn = 0;
     for (const state of ['day', 'dusk'] as FixedSkyState[]) {
       for (let m = 0; m < 24 * 60; m += 10) {
-        const d = paintSky(makePhysicalSky(state, new Date(Date.UTC(2026, 10, 11, 0, m)), 0), 1280, 720).sunDisc;
+        const d = paintSky(
+          makePhysicalSky(state, new Date(Date.UTC(2026, 10, 11, 0, m)), 0),
+          1280,
+          720
+        ).sunDisc;
         if (!d) continue;
         drawn += 1;
-        expect(0.2126 * lin(d.rgb[0]) + 0.7152 * lin(d.rgb[1]) + 0.0722 * lin(d.rgb[2])).toBeGreaterThanOrEqual(0.4744);
+        expect(
+          0.2126 * lin(d.rgb[0]) + 0.7152 * lin(d.rgb[1]) + 0.0722 * lin(d.rgb[2])
+        ).toBeGreaterThanOrEqual(0.4744);
       }
     }
     expect(drawn).toBeGreaterThan(0);
diff --git a/src/app/features/scene/ridge/physicalSky.ts b/src/app/features/scene/ridge/physicalSky.ts
index 48a10a16..0e034416 100644
--- a/src/app/features/scene/ridge/physicalSky.ts
+++ b/src/app/features/scene/ridge/physicalSky.ts
@@ -4,7 +4,15 @@
 import type { FixedSkyState } from '../skyBand';
 import { bakeAtmosphere } from './earthAtmosphere';
 import type { Atmosphere } from './earthAtmosphere';
-import { domeSize, HORIZON_AT, renderDome, SUN_RADIUS, sunOnScreen, viewFor, VFOV_DEG } from './skyDome';
+import {
+  domeSize,
+  HORIZON_AT,
+  renderDome,
+  SUN_RADIUS,
+  sunOnScreen,
+  viewFor,
+  VFOV_DEG,
+} from './skyDome';
 import type { Dome, DomeView } from './skyDome';
 import type { Srgb } from './skyColour';
 import { display8, fitDisplay, holdBudget, MARGIN } from './toneMap';
@@ -45,7 +53,11 @@ export function rowMean(dome: Dome, display: Display, row: number): Srgb {
   return [Math.round(acc[0] / dome.w), Math.round(acc[1] / dome.w), Math.round(acc[2] / dome.w)];
 }
 
-export function makePhysicalSky(state: FixedSkyState, now: Date, weatherValue: number): PhysicalSky {
+export function makePhysicalSky(
+  state: FixedSkyState,
+  now: Date,
+  weatherValue: number
+): PhysicalSky {
   const t0 = clock();
   const sun = sunForState(state, now);
   const weather = weatherOf(weatherValue);
@@ -117,8 +129,16 @@ function sunDisc(p: PhysicalSky, view: DomeView): SkyPixels['sunDisc'] {
   const top = Math.max(...trans, 1e-9);
   const rgb = trans.map((t) => Math.round(255 * (t / top) ** 0.6));
   // The disc sits on the sky, so it keeps the display floor the dark link was fitted to: mix toward white until it does.
-  const lin = (c: number): number => (c / 255 <= 0.04045 ? c / 255 / 12.92 : ((c / 255 + 0.055) / 1.055) ** 2.4);
-  const luma = (c: number[]): number => 0.2126 * lin(c[0]) + 0.7152 * lin(c[1]) + 0.0722 * lin(c[2]);
-  for (let m = 0; luma(rgb) < DISC_FLOOR && m < 40; m += 1) for (let i = 0; i < 3; i += 1) rgb[i] = Math.round(rgb[i] + (255 - rgb[i]) * 0.1);
-  return { ...at, rgb: rgb as unknown as Srgb, radius: (SUN_RADIUS * 180) / Math.PI / VFOV_DEG, alpha };
+  const lin = (c: number): number =>
+    c / 255 <= 0.04045 ? c / 255 / 12.92 : ((c / 255 + 0.055) / 1.055) ** 2.4;
+  const luma = (c: number[]): number =>
+    0.2126 * lin(c[0]) + 0.7152 * lin(c[1]) + 0.0722 * lin(c[2]);
+  for (let m = 0; luma(rgb) < DISC_FLOOR && m < 40; m += 1)
+    for (let i = 0; i < 3; i += 1) rgb[i] = Math.round(rgb[i] + (255 - rgb[i]) * 0.1);
+  return {
+    ...at,
+    rgb: rgb as unknown as Srgb,
+    radius: (SUN_RADIUS * 180) / Math.PI / VFOV_DEG,
+    alpha,
+  };
 }
diff --git a/src/app/features/scene/ridge/rain.test.ts b/src/app/features/scene/ridge/rain.test.ts
index 6575ea20..80ce2289 100644
--- a/src/app/features/scene/ridge/rain.test.ts
+++ b/src/app/features/scene/ridge/rain.test.ts
@@ -4,7 +4,8 @@ import { drawRainTile, RAIN_TILES, streakCount } from './rain';
 const recorder = () => {
   const calls: string[] = [];
   const ctx = new Proxy({} as Record<string, unknown>, {
-    get: (t, k: string) => (k in t ? t[k] : (...a: unknown[]) => calls.push(`${k}(${a.join(',')})`)),
+    get: (t, k: string) =>
+      k in t ? t[k] : (...a: unknown[]) => calls.push(`${k}(${a.join(',')})`),
     set: (t, k: string, v) => {
       t[k] = v;
       return true;
@@ -27,6 +28,8 @@ describe('rain', () => {
     drawRainTile(a.ctx, RAIN_TILES[1], 1, [200, 210, 220], 1);
     drawRainTile(b.ctx, RAIN_TILES[1], 1, [200, 210, 220], 1);
     expect(a.calls).toEqual(b.calls);
-    expect(a.calls.filter((c) => c.startsWith('stroke'))).toHaveLength(streakCount(RAIN_TILES[1], 1) * 9);
+    expect(a.calls.filter((c) => c.startsWith('stroke'))).toHaveLength(
+      streakCount(RAIN_TILES[1], 1) * 9
+    );
   });
 });
diff --git a/src/app/features/scene/ridge/rain.ts b/src/app/features/scene/ridge/rain.ts
index 699130cf..2644ed96 100644
--- a/src/app/features/scene/ridge/rain.ts
+++ b/src/app/features/scene/ridge/rain.ts
@@ -27,10 +27,18 @@ export const RAIN_TILES: readonly RainTile[] = [
 export const RAIN_SLANT = 0.18;
 
 /** Streaks to draw at a rain amount 0..1 (none at 0). */
-export const streakCount = (t: RainTile, rain: number): number => (rain <= 0 ? 0 : Math.max(4, Math.round(t.streaks * rain)));
+export const streakCount = (t: RainTile, rain: number): number =>
+  rain <= 0 ? 0 : Math.max(4, Math.round(t.streaks * rain));
 
 /** Draw one tile. The streaks wrap across the tile's edges so the tile repeats without a seam. */
-export function drawRainTile(ctx: CanvasRenderingContext2D, t: RainTile, rain: number, colour: Srgb, scale: number, seed = 0): void {
+export function drawRainTile(
+  ctx: CanvasRenderingContext2D,
+  t: RainTile,
+  rain: number,
+  colour: Srgb,
+  scale: number,
+  seed = 0
+): void {
   const n = streakCount(t, rain);
   ctx.clearRect(0, 0, t.size, t.size);
   ctx.lineCap = 'round';
diff --git a/src/app/features/scene/ridge/ridgeBake.ts b/src/app/features/scene/ridge/ridgeBake.ts
index 72736d85..063c4e3e 100644
--- a/src/app/features/scene/ridge/ridgeBake.ts
+++ b/src/app/features/scene/ridge/ridgeBake.ts
@@ -3,7 +3,15 @@
 // slope of the heightfield's crest line against the sun; the face under it takes a light-to-haze
 // gradient, erosion streaks and a lit rim on the crest. The depth treatment (colour, haze, contrast
 // by distance) is ridgeWorld's `layerColour`, `hazeColour` and `transmittance`, used here and not redone.
-import { gullyAt, HorizonView, LayerSpec, layerProfile, hazeColour, layerColour, transmittance } from './ridgeWorld';
+import {
+  gullyAt,
+  HorizonView,
+  LayerSpec,
+  layerProfile,
+  hazeColour,
+  layerColour,
+  transmittance,
+} from './ridgeWorld';
 import type { SkyBand } from '../skyBand';
 import { LUMA, SKY_BAND } from '../skyBand';
 import type { SkyColours, Srgb } from './skyColour';
@@ -137,7 +145,10 @@ function crestRows(p: BakeParams, c0: number, c1: number): Float64Array {
   const amp = p.spec.relief * p.viewH;
   const lift = p.spec.base * p.viewH;
   for (let c = c0 - 1; c <= c1; c += 1) {
-    const top = Math.min(p.bandH, lift + amp * layerProfile(p.spec, (p.px0 + c) / p.period, p.horizonView));
+    const top = Math.min(
+      p.bandH,
+      lift + amp * layerProfile(p.spec, (p.px0 + c) / p.period, p.horizonView)
+    );
     out[c - c0 + 1] = p.bandH - top;
   }
   return out;
diff --git a/src/app/features/scene/ridge/ridgeWorld.ts b/src/app/features/scene/ridge/ridgeWorld.ts
index 6bd8e3b1..c6c745c3 100644
--- a/src/app/features/scene/ridge/ridgeWorld.ts
+++ b/src/app/features/scene/ridge/ridgeWorld.ts
@@ -47,7 +47,6 @@ export interface HorizonView {
 /** The static horizon layer's track sits this many viewport widths left of the screen, so the camera's sway never shows its edge. */
 export const HORIZON_TRACK_SHIFT = 0.06;
 
-
 /** Four layers: one function, four parameter rows. */
 export const LAYERS: readonly LayerSpec[] = [
   {
@@ -225,7 +224,13 @@ export function layerSize(cssW: number, cssH: number, scale: number) {
 }
 
 /** Ridge-top y (canvas pixels, from the top of the layer's band) at world-x `t` (viewport widths). */
-export function ridgeY(spec: LayerSpec, t: number, bandH: number, viewH: number, view?: HorizonView): number {
+export function ridgeY(
+  spec: LayerSpec,
+  t: number,
+  bandH: number,
+  viewH: number,
+  view?: HorizonView
+): number {
   const topFromBottom = spec.base * viewH + spec.relief * viewH * layerProfile(spec, t, view);
   return bandH - Math.min(bandH, topFromBottom);
 }
diff --git a/src/app/features/scene/ridge/toneMap.ts b/src/app/features/scene/ridge/toneMap.ts
index b91a4d6d..44bc9dbe 100644
--- a/src/app/features/scene/ridge/toneMap.ts
+++ b/src/app/features/scene/ridge/toneMap.ts
@@ -20,7 +20,8 @@ const OUT: readonly Rgb[] = [
   [-0.10208, 1.10813, -0.00605],
   [-0.00327, -0.07276, 1.07602],
 ];
-const fit = (v: number): number => (v * (v + 0.0245786) - 0.000090537) / (v * (0.983729 * v + 0.432951) + 0.238081);
+const fit = (v: number): number =>
+  (v * (v + 0.0245786) - 0.000090537) / (v * (0.983729 * v + 0.432951) + 0.238081);
 const encode = (l: number): number => {
   const c = Math.min(1, Math.max(0, l));
   return 255 * (c <= 0.0031308 ? 12.92 * c : 1.055 * c ** (1 / 2.4) - 0.055);
@@ -32,7 +33,8 @@ export function acesLinear(r: number, g: number, b: number, exposure: number, ou
   const y = g * exposure;
   const z = b * exposure;
   const p = [0, 1, 2].map((i) => fit(Math.max(0, IN[i][0] * x + IN[i][1] * y + IN[i][2] * z)));
-  for (let i = 0; i < 3; i += 1) out[i] = Math.min(1, Math.max(0, OUT[i][0] * p[0] + OUT[i][1] * p[1] + OUT[i][2] * p[2]));
+  for (let i = 0; i < 3; i += 1)
+    out[i] = Math.min(1, Math.max(0, OUT[i][0] * p[0] + OUT[i][1] * p[1] + OUT[i][2] * p[2]));
 }
 
 /** The 8-bit sRGB of linear radiance, exposed and tone-mapped. */
@@ -44,7 +46,8 @@ export function toneMap8(r: number, g: number, b: number, exposure: number, out:
 }
 
 /** WCAG relative luminance of linear display RGB. */
-export const displayLuma = (c: ArrayLike<number>): number => 0.2126 * c[0] + 0.7152 * c[1] + 0.0722 * c[2];
+export const displayLuma = (c: ArrayLike<number>): number =>
+  0.2126 * c[0] + 0.7152 * c[1] + 0.0722 * c[2];
 
 /** What a sky state needs of its backdrop's display luminance, from the ink it wears (skyBand.ts, skyInk.ts). */
 export interface Budget {
@@ -90,7 +93,13 @@ const decode = (v: number): number => {
   return c <= 0.04045 ? c / 12.92 : ((c + 0.055) / 1.055) ** 2.4;
 };
 /** Display luminance (WCAG relative, from the encoded bytes) of a radiance through a display. */
-export function displayLumaOf(r: number, g: number, b: number, d: Display, tmp: number[] = [0, 0, 0]): number {
+export function displayLumaOf(
+  r: number,
+  g: number,
+  b: number,
+  d: Display,
+  tmp: number[] = [0, 0, 0]
+): number {
   display8(r, g, b, d, tmp);
   return displayLuma([decode(tmp[0]), decode(tmp[1]), decode(tmp[2])]);
 }
@@ -113,7 +122,9 @@ export interface Fit {
 export function fitDisplay(state: FixedSkyState, hdr: Float32Array, meanLuma: number): Fit {
   const b = BUDGET[state];
   const keyExposure =
-    b.key === undefined ? b.min : Math.min(b.max, Math.max(b.min, (b.key * 1.6) / Math.max(meanLuma, 1e-9)));
+    b.key === undefined
+      ? b.min
+      : Math.min(b.max, Math.max(b.min, (b.key * 1.6) / Math.max(meanLuma, 1e-9)));
   const n = hdr.length / 3;
   const stride = Math.max(1, Math.floor(n / 4000));
   const tmp = [0, 0, 0];
@@ -187,7 +198,10 @@ export function holdBudget(state: FixedSkyState, hdr: Float32Array, d: Display):
     r = range(cur);
   }
   for (let k = 0; k < 8 && r.lo < b.floor; k += 1) {
-    cur = { exposure: cur.exposure, lift: cur.lift + ((b.floor - r.lo) / (1 - r.lo)) * 1.05 + 1e-4 };
+    cur = {
+      exposure: cur.exposure,
+      lift: cur.lift + ((b.floor - r.lo) / (1 - r.lo)) * 1.05 + 1e-4,
+    };
     r = range(cur);
   }
   return cur;
diff --git a/src/app/features/scene/ridge/vienna.test.ts b/src/app/features/scene/ridge/vienna.test.ts
index e0d4a4c7..4f26303c 100644
--- a/src/app/features/scene/ridge/vienna.test.ts
+++ b/src/app/features/scene/ridge/vienna.test.ts
@@ -31,7 +31,8 @@ describe('the sun over Vienna', () => {
   it('has a short day in December and a long one in June: published 8 h 4 min and 16 h 0 min with refraction, which adds about 6 minutes each end the ephemeris leaves out', () => {
     const daylight = (day: string) => {
       let n = 0;
-      for (let m = 0; m < 24 * 60; m += 1) if (viennaSun(new Date(Date.parse(day) + m * 60_000)).elevation > 0) n += 1;
+      for (let m = 0; m < 24 * 60; m += 1)
+        if (viennaSun(new Date(Date.parse(day) + m * 60_000)).elevation > 0) n += 1;
       return n;
     };
     expect(Math.abs(daylight('2026-12-21T00:00:00Z') - (8 * 60 + 4))).toBeLessThan(15);
diff --git a/src/app/features/scene/ridge/vienna.ts b/src/app/features/scene/ridge/vienna.ts
index 56188226..f21082e5 100644
--- a/src/app/features/scene/ridge/vienna.ts
+++ b/src/app/features/scene/ridge/vienna.ts
@@ -33,7 +33,8 @@ export const STATE_ELEVATION: Record<FixedSkyState, readonly [number, number]> =
   night: [-90, -DAY_FROM],
 };
 
-const startOfUtcDay = (t: Date): number => Math.floor(t.getTime() / (24 * 60 * MIN)) * 24 * 60 * MIN;
+const startOfUtcDay = (t: Date): number =>
+  Math.floor(t.getTime() / (24 * 60 * MIN)) * 24 * 60 * MIN;
 
 /** The moment of the day (UTC day of `t`, every 5 minutes) the sun is highest over Vienna: solar noon to the step. */
 export function solarNoon(t: Date): Date {
diff --git a/src/app/features/scene/ridge/viennaHorizon.json b/src/app/features/scene/ridge/viennaHorizon.json
index 62a4a126..adbc289a 100644
--- a/src/app/features/scene/ridge/viennaHorizon.json
+++ b/src/app/features/scene/ridge/viennaHorizon.json
@@ -1 +1,306 @@
-{"viewpoint":{"lat":48.1929826,"lon":16.3534237,"groundM":183.3},"stepDeg":0.5,"radiusKm":60.0,"minKm":1.0,"curvature":"drop d^2/2R*(1-0.13), R=6371000 m","source":{"dataset":"Copernicus DEM GLO-30 (COP-DEM_GLO-30-DGED), a DSM, EGM2008 heights, 1 arc-second grid","tiles":["N47_00_E015_00","N47_00_E016_00","N47_00_E017_00","N48_00_E015_00","N48_00_E016_00","N48_00_E017_00","N49_00_E015_00","N49_00_E016_00","N49_00_E017_00"],"tileBytesEach":"about 42-44 MB (Cloud Optimized GeoTIFF); nine tiles, about 380 MB, read once, not committed","url":"https://copernicus-dem-30m.s3.amazonaws.com/ (AWS Open Data, eu-central-1, no account)","licence":"Copernicus DEM licence: free of charge for any use incl. commercial, attribution required, no warranty (https://spacedata.copernicus.eu/collections/copernicus-digital-elevation-model, Licencing)","attribution":"Contains modified Copernicus data: DEM \u00a9 DLR e.V. 2010-2014 and \u00a9 Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights 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+  "stepDeg": 0.5,
+  "radiusKm": 60.0,
+  "minKm": 1.0,
+  "curvature": "drop d^2/2R*(1-0.13), R=6371000 m",
+  "source": {
+    "dataset": "Copernicus DEM GLO-30 (COP-DEM_GLO-30-DGED), a DSM, EGM2008 heights, 1 arc-second grid",
+    "tiles": [
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+      "N47_00_E016_00",
+      "N47_00_E017_00",
+      "N48_00_E015_00",
+      "N48_00_E016_00",
+      "N48_00_E017_00",
+      "N49_00_E015_00",
+      "N49_00_E016_00",
+      "N49_00_E017_00"
+    ],
+    "tileBytesEach": "about 42-44 MB (Cloud Optimized GeoTIFF); nine tiles, about 380 MB, read once, not committed",
+    "url": "https://copernicus-dem-30m.s3.amazonaws.com/ (AWS Open Data, eu-central-1, no account)",
+    "licence": "Copernicus DEM licence: free of charge for any use incl. commercial, attribution required, no warranty (https://spacedata.copernicus.eu/collections/copernicus-digital-elevation-model, Licencing)",
+    "attribution": "Contains modified Copernicus data: DEM \u00a9 DLR e.V. 2010-2014 and \u00a9 Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved.",
+    "bakedBy": "scripts/bake-horizon.py"
+  },
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+  ]
+}
diff --git a/src/app/features/scene/ridge/weather.ts b/src/app/features/scene/ridge/weather.ts
index 68ea88ea..edcb2ae3 100644
--- a/src/app/features/scene/ridge/weather.ts
+++ b/src/app/features/scene/ridge/weather.ts
@@ -43,7 +43,9 @@ export function weatherOf(value: number): Weather {
 }
 
 /** The page URL's `?weather=<0..1>`, when it is a number. */
-export function urlWeather(search: string = typeof location === 'undefined' ? '' : location.search): number | undefined {
+export function urlWeather(
+  search: string = typeof location === 'undefined' ? '' : location.search
+): number | undefined {
   const v = new URLSearchParams(search).get('weather');
   if (v === null || v.trim() === '') return undefined;
   const n = Number(v);
diff --git a/src/app/features/scene/ridge/weatherFeed.test.ts b/src/app/features/scene/ridge/weatherFeed.test.ts
index e12bbefc..0f490cad 100644
--- a/src/app/features/scene/ridge/weatherFeed.test.ts
+++ b/src/app/features/scene/ridge/weatherFeed.test.ts
@@ -30,7 +30,9 @@ const NOW = new Date('2026-11-11T10:50:00Z');
 
 describe('weather from the file', () => {
   it('credits GeoSphere as its legal page asks, and claims no licence', () => {
-    expect(WEATHER_ATTRIBUTION).toBe('Datenquelle: GeoSphere Austria - https://data.hub.geosphere.at');
+    expect(WEATHER_ATTRIBUTION).toBe(
+      'Datenquelle: GeoSphere Austria - https://data.hub.geosphere.at'
+    );
     expect(WEATHER_ATTRIBUTION).not.toMatch(/CC/);
   });
   it('rain is 0.8..1, by rate', () => {
@@ -42,21 +44,41 @@ describe('weather from the file', () => {
     expect(clearSkyGhi(-5)).toBe(0);
   });
   it('noon clear: radiation at the clear-sky value is no cloud', () => {
-    expect(weatherFromFile(file({ glow_wm2: clearSkyGhi(21), sunshine_s_10min: 600, humidity_pct: 95 }), 21)).toBe(0);
+    expect(
+      weatherFromFile(
+        file({ glow_wm2: clearSkyGhi(21), sunshine_s_10min: 600, humidity_pct: 95 }),
+        21
+      )
+    ).toBe(0);
     expect(cloudFromGlow(300, 21)).toBeCloseTo(0.56, 1); // k = 0.9 is still a few oktas
   });
   it('noon overcast: a fifth of the clear-sky radiation is nearly full cloud, and with saturated air, mist', () => {
     expect(cloudFromGlow(0.2 * clearSkyGhi(21), 21)).toBeGreaterThan(0.9);
-    expect(weatherFromFile(file({ glow_wm2: 0.2 * clearSkyGhi(21), humidity_pct: 80 }), 21)).toBeGreaterThan(0.6);
-    expect(weatherFromFile(file({ glow_wm2: 0.2 * clearSkyGhi(21), humidity_pct: 100 }), 21)).toBe(0.75);
+    expect(
+      weatherFromFile(file({ glow_wm2: 0.2 * clearSkyGhi(21), humidity_pct: 80 }), 21)
+    ).toBeGreaterThan(0.6);
+    expect(weatherFromFile(file({ glow_wm2: 0.2 * clearSkyGhi(21), humidity_pct: 100 }), 21)).toBe(
+      0.75
+    );
   });
   it('the radiation, not the humidity, decides by day: humid air under a bright sky is clear', () => {
-    expect(weatherFromFile(file({ glow_wm2: clearSkyGhi(30), sunshine_s_10min: 600, humidity_pct: 98 }), 30)).toBe(0);
+    expect(
+      weatherFromFile(
+        file({ glow_wm2: clearSkyGhi(30), sunshine_s_10min: 600, humidity_pct: 98 }),
+        30
+      )
+    ).toBe(0);
   });
   it('dusk: with the sun at 3 degrees the humidity ramp speaks, cloud 0 at 60% and 1 at 95%', () => {
-    expect(weatherFromFile(file({ glow_wm2: 5, sunshine_s_10min: 0, humidity_pct: 60 }), 3)).toBe(0);
-    expect(weatherFromFile(file({ glow_wm2: 5, sunshine_s_10min: 0, humidity_pct: 77.5 }), 3)).toBeCloseTo(0.35, 2);
-    expect(weatherFromFile(file({ glow_wm2: 5, sunshine_s_10min: 0, humidity_pct: 95 }), 3)).toBeCloseTo(0.7, 2);
+    expect(weatherFromFile(file({ glow_wm2: 5, sunshine_s_10min: 0, humidity_pct: 60 }), 3)).toBe(
+      0
+    );
+    expect(
+      weatherFromFile(file({ glow_wm2: 5, sunshine_s_10min: 0, humidity_pct: 77.5 }), 3)
+    ).toBeCloseTo(0.35, 2);
+    expect(
+      weatherFromFile(file({ glow_wm2: 5, sunshine_s_10min: 0, humidity_pct: 95 }), 3)
+    ).toBeCloseTo(0.7, 2);
   });
   it('night: the radiation and sunshine are 0.0 and the humidity speaks; saturated air is mist, 0.75', () => {
     expect(weatherFromFile(file({ glow_wm2: 0, humidity_pct: 40 }), -20)).toBe(0);
@@ -68,21 +90,30 @@ describe('weather from the file', () => {
     for (const g of [56, 72, 89]) expect(cloudFromGlow(g, nov)).toBeGreaterThan(0.95);
     for (const g of [546, 569]) expect(cloudFromGlow(g, oct)).toBe(0);
     expect(weatherFromFile(file({ glow_wm2: 72, sunshine_s_10min: 0 }), nov)).toBeGreaterThan(0.65);
-    expect(weatherFromFile(file({ glow_wm2: 560, sunshine_s_10min: 600, humidity_pct: 70 }), oct)).toBe(0);
+    expect(
+      weatherFromFile(file({ glow_wm2: 560, sunshine_s_10min: 600, humidity_pct: 70 }), oct)
+    ).toBe(0);
   });
   it('the sunshine cross-checks the radiation: agreement keeps the radiation, a half-sky disagreement splits it', () => {
-    expect(cloudEstimate(file({ glow_wm2: 0.2 * clearSkyGhi(21), sunshine_s_10min: 0 }), 21)).toBeGreaterThan(0.9);
+    expect(
+      cloudEstimate(file({ glow_wm2: 0.2 * clearSkyGhi(21), sunshine_s_10min: 0 }), 21)
+    ).toBeGreaterThan(0.9);
     // Radiation says clear, the sunshine says none: each is half trusted.
     expect(cloudEstimate(file({ glow_wm2: clearSkyGhi(21), sunshine_s_10min: 0 }), 21)).toBe(0.5);
     // No radiation reading by day: the sunshine speaks alone.
     expect(cloudEstimate(file({ glow_wm2: null, sunshine_s_10min: 300 }), 21)).toBe(0.5);
     expect(cloudEstimate(file({ glow_wm2: 0, sunshine_s_10min: 600 }), 21)).toBe(0);
   });
-  it('with the sun below the instruments\' reach there is no estimate: the humidity speaks', () => {
+  it("with the sun below the instruments' reach there is no estimate: the humidity speaks", () => {
     expect(cloudEstimate(file({ glow_wm2: 3, sunshine_s_10min: 0 }), 3)).toBeNull();
   });
   it('null: unknown measurements are not zero, and nothing known is a clear sky', () => {
-    expect(weatherFromFile(file({ glow_wm2: null, humidity_pct: null, precip_mm_10min: null, sunshine_s_10min: null }), 21)).toBe(CLEAR_SKY);
+    expect(
+      weatherFromFile(
+        file({ glow_wm2: null, humidity_pct: null, precip_mm_10min: null, sunshine_s_10min: null }),
+        21
+      )
+    ).toBe(CLEAR_SKY);
     expect(weatherFromFile(file({ glow_wm2: null, humidity_pct: 95 }), 21)).toBeCloseTo(0.7, 2);
   });
 });
@@ -97,17 +128,26 @@ describe('the weather now', () => {
     expect(currentWeather(f, NOW)).toBe(CLEAR_SKY);
   });
   it('the 30 minute mark itself is still fresh', () => {
-    expect(currentWeather(file({ glow_wm2: 0, humidity_pct: 100, fetched_at: '2026-11-11T10:20:00Z' }), NOW)).toBe(0.75);
+    expect(
+      currentWeather(
+        file({ glow_wm2: 0, humidity_pct: 100, fetched_at: '2026-11-11T10:20:00Z' }),
+        NOW
+      )
+    ).toBe(0.75);
   });
   it('falls back to a clear sky when the observation is more than 40 minutes old, though the file is fresh', () => {
     const f = file({ precip_mm_10min: 2, observed_at: '2026-11-11T10:09:00Z' });
     expect(NOW.getTime() - Date.parse(f.observed_at)).toBeGreaterThan(OBSERVATION_STALE_MS);
     expect(currentWeather(f, NOW)).toBe(CLEAR_SKY);
-    expect(currentWeather(file({ precip_mm_10min: 2, observed_at: '2026-11-11T10:11:00Z' }), NOW)).toBeGreaterThan(0.8);
+    expect(
+      currentWeather(file({ precip_mm_10min: 2, observed_at: '2026-11-11T10:11:00Z' }), NOW)
+    ).toBeGreaterThan(0.8);
   });
   it('falls back to a clear sky with no file, and with a fetch time from the future', () => {
     expect(currentWeather(null, NOW)).toBe(CLEAR_SKY);
-    expect(currentWeather(file({ precip_mm_10min: 2, fetched_at: '2026-11-12T10:40:00Z' }), NOW)).toBe(CLEAR_SKY);
+    expect(
+      currentWeather(file({ precip_mm_10min: 2, fetched_at: '2026-11-12T10:40:00Z' }), NOW)
+    ).toBe(CLEAR_SKY);
   });
 });
 
@@ -117,23 +157,45 @@ describe('bad instrument values', () => {
   });
   it('the radiation is set against the sun of the ten minutes it averaged, not the sun now', () => {
     // Sun rising: 07:45Z observation (mean of 07:35-07:45), read 35 minutes later at the stale limit.
-    const f = file({ observed_at: '2026-11-11T07:45:00Z', fetched_at: '2026-11-11T07:46:00Z', glow_wm2: 100, sunshine_s_10min: null, humidity_pct: 50 });
+    const f = file({
+      observed_at: '2026-11-11T07:45:00Z',
+      fetched_at: '2026-11-11T07:46:00Z',
+      glow_wm2: 100,
+      sunshine_s_10min: null,
+      humidity_pct: 50,
+    });
     const at = (m: number) => currentWeather(f, new Date(Date.parse(f.observed_at) + m * 60_000));
     expect(at(0)).toBe(at(29));
   });
 });
 
 describe('reading weather.json', () => {
-  it('reads Eureka\'s file as the host writes it: Z times, a whole-station gap as nulls, 0.0 at night', () => {
+  it("reads Eureka's file as the host writes it: Z times, a whole-station gap as nulls, 0.0 at night", () => {
     const night = JSON.parse(
       '{"fetched_at":"2026-11-11T22:48:22Z","observed_at":"2026-11-11T22:40:00Z","station":11035,"precip_mm_10min":0.1,"humidity_pct":100.0,"sunshine_s_10min":0.0,"glow_wm2":0.0,"attribution":"Datenquelle: GeoSphere Austria - https://data.hub.geosphere.at"}'
     );
-    expect(parseWeatherFile(night)).toMatchObject({ precip_mm_10min: 0.1, humidity_pct: 100, glow_wm2: 0, sunshine_s_10min: 0 });
-    const gap = parseWeatherFile({ ...night, precip_mm_10min: null, humidity_pct: null, sunshine_s_10min: null, glow_wm2: null });
-    expect(gap).toMatchObject({ precip_mm_10min: null, humidity_pct: null, sunshine_s_10min: null, glow_wm2: null });
+    expect(parseWeatherFile(night)).toMatchObject({
+      precip_mm_10min: 0.1,
+      humidity_pct: 100,
+      glow_wm2: 0,
+      sunshine_s_10min: 0,
+    });
+    const gap = parseWeatherFile({
+      ...night,
+      precip_mm_10min: null,
+      humidity_pct: null,
+      sunshine_s_10min: null,
+      glow_wm2: null,
+    });
+    expect(gap).toMatchObject({
+      precip_mm_10min: null,
+      humidity_pct: null,
+      sunshine_s_10min: null,
+      glow_wm2: null,
+    });
     expect(currentWeather(gap, new Date('2026-11-11T22:50:00Z'))).toBe(CLEAR_SKY);
   });
-  it('is not another station\'s file', () => {
+  it("is not another station's file", () => {
     expect(parseWeatherFile({ ...file(), station: 11036 })).toBeNull();
   });
   it('parses the agreed shape, keeping nulls and the sunshine it never reads', () => {
@@ -146,15 +208,30 @@ describe('reading weather.json', () => {
     expect(parseWeatherFile(null)).toBeNull();
     expect(parseWeatherFile('x')).toBeNull();
   });
-  it('rejects a time with no zone: it would be read in the client\'s local time', () => {
+  it("rejects a time with no zone: it would be read in the client's local time", () => {
     expect(parseWeatherFile({ ...file(), observed_at: '2026-11-10T10:40:00' })).toBeNull();
-    expect(parseWeatherFile({ ...file(), observed_at: '2026-11-10T11:40:00+01:00' })).not.toBeNull();
+    expect(
+      parseWeatherFile({ ...file(), observed_at: '2026-11-10T11:40:00+01:00' })
+    ).not.toBeNull();
   });
   it('is no observation when the file is missing, fails, or is not JSON', async () => {
-    expect(await fetchWeatherFile('/weather.json', (async () => ({ ok: false })) as unknown as typeof fetch)).toBeNull();
-    expect(await fetchWeatherFile('/weather.json', (async () => { throw new Error('offline'); }) as unknown as typeof fetch)).toBeNull();
     expect(
-      await fetchWeatherFile('/weather.json', (async () => ({ ok: true, json: async () => { throw new Error('bad'); } })) as unknown as typeof fetch)
+      await fetchWeatherFile('/weather.json', (async () => ({
+        ok: false,
+      })) as unknown as typeof fetch)
+    ).toBeNull();
+    expect(
+      await fetchWeatherFile('/weather.json', (async () => {
+        throw new Error('offline');
+      }) as unknown as typeof fetch)
+    ).toBeNull();
+    expect(
+      await fetchWeatherFile('/weather.json', (async () => ({
+        ok: true,
+        json: async () => {
+          throw new Error('bad');
+        },
+      })) as unknown as typeof fetch)
     ).toBeNull();
   });
   it('reads a good file', async () => {
diff --git a/src/app/features/scene/ridge/weatherFeed.ts b/src/app/features/scene/ridge/weatherFeed.ts
index 39379fd5..b2b4a7b0 100644
--- a/src/app/features/scene/ridge/weatherFeed.ts
+++ b/src/app/features/scene/ridge/weatherFeed.ts
@@ -34,7 +34,8 @@ const clamp01 = (v: number): number => Math.min(1, Math.max(0, v));
 const num = (v: unknown): number | null => (typeof v === 'number' && Number.isFinite(v) ? v : null);
 
 /** An ISO time that names its zone (`Z` or an offset); `Date.parse` would read a bare one in the client's local time. */
-const isZonedTime = (v: unknown): v is string => typeof v === 'string' && /(Z|[+-]\d\d:?\d\d)$/.test(v) && !Number.isNaN(Date.parse(v));
+const isZonedTime = (v: unknown): v is string =>
+  typeof v === 'string' && /(Z|[+-]\d\d:?\d\d)$/.test(v) && !Number.isNaN(Date.parse(v));
 
 /** A `WeatherFile` from parsed JSON, or null when it does not have the shape (times missing or unparseable). */
 export function parseWeatherFile(json: unknown): WeatherFile | null {
@@ -96,8 +97,10 @@ export function cloudEstimate(f: WeatherFile, sunEl: number): number | null {
 export function weatherFromFile(f: WeatherFile, sunEl: number): number {
   const rain = f.precip_mm_10min ?? 0;
   if (rain > 0) return clamp01(0.8 + 0.2 * Math.min(1, rain / 1.5));
-  const cloud = cloudEstimate(f, sunEl) ?? (f.humidity_pct === null ? 0 : clamp01((f.humidity_pct - 60) / 35));
-  const mist = f.humidity_pct === null || cloud < 0.5 ? 0 : clamp01((f.humidity_pct - 92) / 8) * 0.75;
+  const cloud =
+    cloudEstimate(f, sunEl) ?? (f.humidity_pct === null ? 0 : clamp01((f.humidity_pct - 60) / 35));
+  const mist =
+    f.humidity_pct === null || cloud < 0.5 ? 0 : clamp01((f.humidity_pct - 92) / 8) * 0.75;
   return Math.max(0.7 * cloud, mist);
 }
 
@@ -106,13 +109,24 @@ export function currentWeather(f: WeatherFile | null, now: Date = new Date()): n
   if (!f) return CLEAR_SKY;
   const fetched = now.getTime() - Date.parse(f.fetched_at);
   const observed = now.getTime() - Date.parse(f.observed_at);
-  if (!(fetched <= STALE_MS && fetched >= -SKEW_MS && observed <= OBSERVATION_STALE_MS && observed >= -SKEW_MS)) return CLEAR_SKY;
+  if (
+    !(
+      fetched <= STALE_MS &&
+      fetched >= -SKEW_MS &&
+      observed <= OBSERVATION_STALE_MS &&
+      observed >= -SKEW_MS
+    )
+  )
+    return CLEAR_SKY;
   // GLOW and SO are means of the ten minutes ending at observed_at: the sun of their midpoint is the one to set them against.
   return weatherFromFile(f, viennaSun(new Date(Date.parse(f.observed_at) - 5 * 60_000)).elevation);
 }
 
 /** Fetch and parse `weather.json`; null on any failure. */
-export async function fetchWeatherFile(url: string, fetcher: typeof fetch = fetch): Promise<WeatherFile | null> {
+export async function fetchWeatherFile(
+  url: string,
+  fetcher: typeof fetch = fetch
+): Promise<WeatherFile | null> {
   try {
     const res = await fetcher(url, { cache: 'no-store' });
     return res.ok ? parseWeatherFile(await res.json()) : null;
diff --git a/src/app/features/scene/shaderSource.ts b/src/app/features/scene/shaderSource.ts
index 42631d57..6c7d7efd 100644
--- a/src/app/features/scene/shaderSource.ts
+++ b/src/app/features/scene/shaderSource.ts
@@ -37,5 +37,7 @@ export function fragmentSource(stage: Stage, defines = ''): string {
   const erosion = solid && WORLD.phacelleGradBound > 0 ? phacelle : '';
   const world = solid ? sdf : '';
   const math = trimGlsl(cultmath, [erosion, common, world, stages[stage]]);
-  return `${HEADER}${defines}${worldDefines()}\n${math}\n${erosion}\n${common}\n${world}\n${stages[stage]}`;
+  return `${HEADER}${defines}${worldDefines()}\n${math}\n${erosion}\n${common}\n${world}\n${
+    stages[stage]
+  }`;
 }
diff --git a/src/app/features/scene/skyForState.test.ts b/src/app/features/scene/skyForState.test.ts
index 7c8e14b1..a04ac173 100644
--- a/src/app/features/scene/skyForState.test.ts
+++ b/src/app/features/scene/skyForState.test.ts
@@ -88,7 +88,13 @@ describe('ridgeSkyFor', () => {
   });
 
   it('draws the sky auto resolves to, never nothing', () => {
-    const key = (s: ReturnType<typeof ridgeSkyFor>) => [s.top, s.mid, s.horizon, s.band, s.physical?.sun];
+    const key = (s: ReturnType<typeof ridgeSkyFor>) => [
+      s.top,
+      s.mid,
+      s.horizon,
+      s.band,
+      s.physical?.sun,
+    ];
     setSkyClock(() => atStandardTime(12, 0));
     expect(key(ridgeSkyFor('auto', 0.3))).toEqual(key(ridgeSkyFor('day', 0.3)));
     setSkyClock(() => atStandardTime(0, 0));
diff --git a/src/app/features/scene/skyInk.test.ts b/src/app/features/scene/skyInk.test.ts
index 888744b3..c92892f6 100644
--- a/src/app/features/scene/skyInk.test.ts
+++ b/src/app/features/scene/skyInk.test.ts
@@ -7,10 +7,11 @@ import type { FixedSkyState } from './skyBand';
 import {
   LIGHTEST_PATCH,
   NIGHT_INK_MAX_L,
-  NOTICE_GROUND,
+  SCRIM_INK,
+  SCRIM_GROUND,
   inkForState,
   labelInk,
-  noticeInk,
+  scrimStyle,
   sceneInk,
   userColorInk,
 } from './skyInk';
@@ -182,27 +183,24 @@ describe('labelInk', () => {
   });
 });
 
-describe('noticeInk', () => {
-  const ratio = (a: number, b: number) => (Math.max(a, b) + 0.05) / (Math.min(a, b) + 0.05);
+describe('scrimStyle', () => {
+  // The scrim over the lightest possible ground (white) is the worst case the ink can meet.
+  const [r, g, b, a] = (SCRIM_GROUND.match(/[\d.]+/g) ?? []).map(Number);
+  const worst = chroma.rgb(
+    ...([r, g, b].map((c) => c * a + 255 * (1 - a)) as [number, number, number])
+  );
+  const ratio = (x: number, y: number) => (Math.max(x, y) + 0.05) / (Math.min(x, y) + 0.05);
 
-  it('is light enough to clear AA on the dark ridge wherever the theme ink does not', () => {
-    (['day', 'dusk'] as FixedSkyState[]).forEach((state) => {
-      const ink = noticeInk({ state, phone: true }) as string;
-      expect(ratio(luminance(ink), NOTICE_GROUND)).toBeGreaterThanOrEqual(AA);
-      // the dark theme ink it replaces does not
-      expect(
-        ratio(luminance(baked.noonday.tokens.SurfaceVariant.OnContainer), NOTICE_GROUND)
-      ).toBeLessThan(AA);
-    });
+  it('clears AA for its ink over its scrim even on a white ground', () => {
+    expect(ratio(luminance(SCRIM_INK), luminance(worst.hex()))).toBeGreaterThanOrEqual(AA);
   });
 
-  it('leaves night (already light) and every desktop state to the theme', () => {
-    expect(noticeInk({ state: 'night', phone: true })).toBeUndefined();
-    (['day', 'dusk', 'night'] as FixedSkyState[]).forEach((state) =>
-      expect(noticeInk({ state, phone: false })).toBeUndefined()
+  it('is the same in every sky state and viewport while a scene runs, and absent without one', () => {
+    const styles = (['day', 'dusk', 'night'] as FixedSkyState[]).flatMap((state) =>
+      [true, false].map((phone) => scrimStyle({ state, phone }))
     );
-    expect(
-      ratio(luminance(baked.midnight.tokens.SurfaceVariant.OnContainer), NOTICE_GROUND)
-    ).toBeGreaterThanOrEqual(AA);
+    styles.forEach((x) => expect(x).toEqual(styles[0]));
+    expect(styles[0]).toMatchObject({ color: SCRIM_INK, backgroundColor: SCRIM_GROUND });
+    expect(scrimStyle(undefined)).toBeUndefined();
   });
 });
diff --git a/src/app/features/scene/skyInk.ts b/src/app/features/scene/skyInk.ts
index b7a3667f..b8e38f31 100644
--- a/src/app/features/scene/skyInk.ts
+++ b/src/app/features/scene/skyInk.ts
@@ -95,18 +95,22 @@ export const labelInk = ({ state, phone }: SkyInk): string | undefined =>
   state === 'dusk' && phone ? '#29221a' : undefined;
 
 /**
- * WCAG relative luminance of the lightest pixel under the notice line above the composer on a phone: the dark
- * foreground ridge, the same in every state (measured 2026-11-10 from the Starfire phone shots at 390x844,
- * ratatoskr-dev-preview/phone-room-{day,dusk,night}.png, text region x 15-355 CSS px: median 0.0052, 90th percentile
- * 0.0089, rounded up to 0.01). The labelInk patches above are the lightest terrain behind the timeline; here the
- * ground is dark, so the ink must be light.
+ * The training-notice line above the composer sits on whatever the scene draws there: the dark ridge on a phone in
+ * the Starfire shots, but a mid-tone ridge at other widths and the near-black foreground ridge on a desktop, so no
+ * ink chosen for one ground holds on the others (measured 2026-11-10 on the pretend-server line, ratatoskr-dev-preview/
+ * taps2-REPORT.md: phone day 3.08, dusk 3.97 with light ink; desktop day 1.01, dusk 1.22 with the theme's dark ink).
+ * So the line carries its own ground: light ink on a dark scrim, in every sky state, on every viewport, whatever
+ * the scene is behind it. The scrim is composited over the lightest ground there is (white); the ink over that
+ * worst case clears AA (skyInk.test.ts).
  */
-export const NOTICE_GROUND = 0.01;
+export const SCRIM_INK = baked.midnight.tokens.SurfaceVariant.OnContainer;
+export const SCRIM_GROUND = 'rgba(10, 14, 24, 0.82)';
 
 /**
- * The ink of the training-notice line above the composer where the theme's own does not clear AA there. On a phone the
- * line sits on the dark ridge in every state, but Noonday (day, dusk) wears dark ink, 1.2:1 at dusk by the numbers
- * above; Midnight's (night) is already light and stays (undefined). Desktop is unmeasured and stays.
+ * The style of a line of text that must be read whatever the scene draws behind it (the training notice, the desk's
+ * recorded rulings): its own ground and ink while a scene runs, or undefined without one.
  */
-export const noticeInk = ({ state, phone }: SkyInk): string | undefined =>
-  phone && state !== 'night' ? baked.midnight.tokens.SurfaceVariant.OnContainer : undefined;
+export const scrimStyle = (ink: SkyInk | undefined) =>
+  ink
+    ? { color: SCRIM_INK, backgroundColor: SCRIM_GROUND, borderRadius: 4, paddingInline: 6 }
+    : undefined;
diff --git a/src/app/features/scene/terrain/terrainAlbedo.ts b/src/app/features/scene/terrain/terrainAlbedo.ts
index 48dc2b42..fdbd9360 100644
--- a/src/app/features/scene/terrain/terrainAlbedo.ts
+++ b/src/app/features/scene/terrain/terrainAlbedo.ts
@@ -157,10 +157,8 @@ export function grainAt(
   distance: number
 ): number {
   const w = triWeights(n);
-  const over = (
-    k: ReadonlyArray<readonly [number, number]>,
-    f: typeof waves
-  ) => w[0] * f(k, z, y) + w[1] * f(k, x, z) + w[2] * f(k, x, y);
+  const over = (k: ReadonlyArray<readonly [number, number]>, f: typeof waves) =>
+    w[0] * f(k, z, y) + w[1] * f(k, x, z) + w[2] * f(k, x, y);
   const coarse = over(COARSE, waves);
   const fine = over(FINE, wavesWarped) * (1 - smooth(ALBEDO.fineNear, ALBEDO.fineFar, distance));
   const layers = Math.sin(y * 0.9 + wobbleAt(x, y, z, n) * 3);
diff --git a/src/app/pages/auth/AuthFooter.tsx b/src/app/pages/auth/AuthFooter.tsx
index 2b888f55..305df247 100644
--- a/src/app/pages/auth/AuthFooter.tsx
+++ b/src/app/pages/auth/AuthFooter.tsx
@@ -4,7 +4,7 @@ import * as css from './styles.css';
 
 export function AuthFooter() {
   return (
-    <Box className={css.AuthFooter} justifyContent="Center" gap="400" wrap="Wrap">
+    <Box className={`${css.AuthFooter} ${css.AuthFooterLinks}`} justifyContent="Center" wrap="Wrap">
       <Text as="a" size="T300" href="https://gamecult.org" target="_blank" rel="noreferrer">
         About
       </Text>
diff --git a/src/app/pages/auth/login/PasswordLoginForm.tsx b/src/app/pages/auth/login/PasswordLoginForm.tsx
index 7934bc9f..57a82daa 100644
--- a/src/app/pages/auth/login/PasswordLoginForm.tsx
+++ b/src/app/pages/auth/login/PasswordLoginForm.tsx
@@ -36,6 +36,7 @@ import {
 import { PasswordInput } from '../../../components/password-input';
 import { FieldError } from '../FiledError';
 import { loginErrorMessage } from '../authMessages';
+import { ForgotLink } from '../styles.css';
 import { getResetPasswordPath } from '../../pathUtils';
 import { stopPropagation } from '../../../utils/keyboard';
 
@@ -251,7 +252,9 @@ export function PasswordLoginForm({ defaultUsername, defaultEmail }: PasswordLog
           )}
           <Box grow="Yes" shrink="No" justifyContent="End">
             <Text as="span" size="T200" priority="400" align="Right">
-              <Link to={getResetPasswordPath(server)}>Forget Password?</Link>
+              <Link className={ForgotLink} to={getResetPasswordPath(server)}>
+                Forget Password?
+              </Link>
             </Text>
           </Box>
         </Box>
diff --git a/src/app/pages/auth/styles.css.ts b/src/app/pages/auth/styles.css.ts
index e762207b..f8a7a95b 100644
--- a/src/app/pages/auth/styles.css.ts
+++ b/src/app/pages/auth/styles.css.ts
@@ -54,6 +54,17 @@ export const AuthFooter = style({
   padding: config.space.S200,
 });
 
+// The footer's links: 16 px apart, and on a phone 22 px between rows, so each link's 11 px of hit area above and
+// below meets its neighbour's and does not cross it (see the tap-target rules at the foot of this file).
+export const AuthFooterLinks = style({
+  gap: config.space.S400,
+  '@media': { [`screen and (max-width: ${MOBILE_BREAKPOINT}px)`]: { rowGap: 22 } },
+});
+
+// Forget Password? sits 5 px under the password field and 16 px above Login: on a phone its hit area takes the 5 and
+// grows 7 px of real layout so the 44 reach neither.
+export const ForgotLink = style({});
+
 // While the background scene runs (html[data-scene], set by features/scene/BackgroundScene), the
 // signed-out ground is clear and the card is a pane shaped like a message bubble (BubbleContent:
 // radius R500, no border), filled with the sky's bubble colour. The scene is one fixed dusk for
@@ -134,6 +145,17 @@ globalStyle(`${scene} ${AuthFooter} a`, {
 // back out of the layout, so nothing moves and nothing is drawn. An inline link ignores the margin and its padding
 // never moves a line, which is the same result.
 const SCREEN_PHONE = `screen and (max-width: ${MOBILE_BREAKPOINT}px)`;
+globalStyle(`${AuthCard} a.${ForgotLink}`, {
+  '@media': {
+    [SCREEN_PHONE]: {
+      display: 'inline-block',
+      paddingTop: 5,
+      paddingBottom: 23,
+      marginTop: -5,
+      marginBottom: -16,
+    },
+  },
+});
 globalStyle(`${AuthCard} a`, {
   '@media': { [SCREEN_PHONE]: { paddingBlock: 14, marginBlock: -14 } },
 });
diff --git a/src/app/phoneTapTargets.test.ts b/src/app/phoneTapTargets.test.ts
index 57a40bfc..996a7556 100644
--- a/src/app/phoneTapTargets.test.ts
+++ b/src/app/phoneTapTargets.test.ts
@@ -9,11 +9,13 @@ const emitted = async (file: string) => {
   const filePath = `${process.cwd()}/src/app/${file}`;
   const { source } = await compile({ filePath, cwd: process.cwd(), identOption: 'debug' });
   const code = await processVanillaFile({ source, filePath, identOption: 'debug' });
-  const bytes = Buffer.from(
-    (code.match(/source=#?([A-Za-z0-9+/=]+)/) as RegExpMatchArray)[1],
-    'base64'
-  );
-  return (bytes[0] === 0x1f && bytes[1] === 0x8b ? zlib.gunzipSync(bytes) : bytes).toString();
+  // A file with recipes inlines one source per rule group; read them all.
+  return [...code.matchAll(/source=#?([A-Za-z0-9+/=]+)/g)]
+    .map((m) => {
+      const bytes = Buffer.from(m[1], 'base64');
+      return (bytes[0] === 0x1f && bytes[1] === 0x8b ? zlib.gunzipSync(bytes) : bytes).toString();
+    })
+    .join('\n');
 };
 
 type Decls = Record<string, number>;
@@ -42,37 +44,55 @@ const rulesFor = (css: string, selector: RegExp, media: string | undefined): Dec
 const PHONE = `screen and (max-width: ${MOBILE_BREAKPOINT}px)`;
 const TAP = 44;
 
-// [target, css file, selector, measured height in CSS px on the Starfire phone run (390x844)].
-const targets: [string, string, RegExp, number][] = [
+// [target, css file, selector, measured height in CSS px on the Starfire phone run (390x844), free space measured
+// above and below the target before its neighbour's box (taps2-REPORT.md): the hit area may reach out of the layout
+// box (negative margin) by no more than that, or it takes taps from its neighbour. Space it needs beyond that is
+// real layout growth, which the rules above take from the padding the margin does not give back.
+const targets: [string, string, RegExp, number, number, number][] = [
   [
     'sender-name button',
     'components/message/layout/layout.css.ts',
     /^button\.layout_Username__/,
     23,
+    11,
+    11,
   ],
   [
     'room-topic button',
     'features/room/RoomViewHeader.css.ts',
     /RoomViewHeader_HeaderTopic__\w+$/,
     18,
+    0,
+    26,
   ],
-  ['sign-in card links', 'pages/auth/styles.css.ts', /styles_AuthCard__\w+ a$/, 16],
-  ['sign-in footer links', 'pages/auth/styles.css.ts', /styles_AuthFooter__\w+ a$/, 22],
+  ['sign-in card links', 'pages/auth/styles.css.ts', /styles_AuthCard__\w+ a$/, 16, 14, 14],
+  [
+    'forget-password link',
+    'pages/auth/styles.css.ts',
+    /styles_AuthCard__\w+ a\.styles_ForgotLink__\w+$/,
+    16,
+    5,
+    16,
+  ],
+  // The footer's rows are 22 px apart on a phone (AuthFooterLinks), 11 px for each side of the gap.
+  ['sign-in footer links', 'pages/auth/styles.css.ts', /styles_AuthFooter__\w+ a$/, 22, 11, 11],
 ];
 
-describe.each(targets)('phone tap target: %s', (_name, file, selector, height) => {
+describe.each(targets)('phone tap target: %s', (_name, file, selector, height, above, below) => {
   it(`grows its hit area to ${TAP} px without moving layout`, async () => {
     const css = await emitted(file);
     const [phone] = rulesFor(css, selector, PHONE);
     expect(phone, 'a phone rule exists').toBeDefined();
-    const top = phone['padding-top'] ?? phone['padding-block'];
-    const bottom = phone['padding-bottom'] ?? phone['padding-block'];
-    const marginTop = phone['margin-top'] ?? phone['margin-block'];
-    const marginBottom = phone['margin-bottom'] ?? phone['margin-block'];
+    const top = phone['padding-top'] ?? phone['padding-block'] ?? 0;
+    const bottom = phone['padding-bottom'] ?? phone['padding-block'] ?? 0;
+    const marginTop = phone['margin-top'] ?? phone['margin-block'] ?? 0;
+    const marginBottom = phone['margin-bottom'] ?? phone['margin-block'] ?? 0;
     expect(height + top + bottom).toBeGreaterThanOrEqual(TAP);
-    // the margin takes back exactly what the padding added, so the target does not move or push its neighbours
-    expect(marginTop).toBe(-top);
-    expect(marginBottom).toBe(-bottom);
+    // the hit area reaches out of the layout box by no more than the free space on that side
+    expect(-marginTop).toBeLessThanOrEqual(above);
+    expect(-marginBottom).toBeLessThanOrEqual(below);
+    expect(marginTop).toBeLessThanOrEqual(0);
+    expect(marginBottom).toBeLessThanOrEqual(0);
   });
 
   it('leaves every other screen as it was: no padding or margin outside the phone query', async () => {
@@ -82,3 +102,17 @@ describe.each(targets)('phone tap target: %s', (_name, file, selector, height) =
     );
   });
 });
+
+describe('phone navigator rows', () => {
+  // The links and buttons inside a row are 44 px (EstateNavigator.css.ts); a row shorter than that lets them spill
+  // onto the next row (the 38 px pitch of taps2-REPORT.md), so the row and the section header are 44 too.
+  it('are as tall as their tap targets', async () => {
+    const css = await emitted('components/nav/styles.css.ts');
+    const phone = [
+      ...css.matchAll(/@media screen and \(max-width: 750px\) \{\n([\s\S]*?\n)\}(?:\n|$)/g),
+    ]
+      .map((m) => m[1])
+      .join('\n');
+    expect(phone.match(/min-height: 2\.75rem/g)?.length).toBeGreaterThanOrEqual(2);
+  });
+});