diff --git a/src/contextTabKeyboard.test.mjs b/src/contextTabKeyboard.test.mjs
index f50b30469..9ebd0e384 100644
--- a/src/contextTabKeyboard.test.mjs
+++ b/src/contextTabKeyboard.test.mjs
@@ -4,18 +4,31 @@ import { _selectContextMode } from './ui/contextTransactions.js';
 import { _initGlobalContextPanel } from './ui/contextBindings.js';
 import { clearSelectedLayers } from './ui/contextActions.js';
 import { readFileSync as readRadioSource } from 'node:fs';
-const radioBindings = readRadioSource(new URL('./ui/radioBindings.js', import.meta.url), 'utf8');
-const contextView = readRadioSource(new URL('./ui/views/ContextView.vue', import.meta.url), 'utf8');
+const radioBindings = readRadioSource(
+  new URL('./ui/radioBindings.js', import.meta.url),
+  'utf8',
+);
+const contextView = readRadioSource(
+  new URL('./ui/views/ContextView.vue', import.meta.url),
+  'utf8',
+);
 import { readFileSync } from 'node:fs';
 import { test } from 'node:test';
 import assert from 'node:assert/strict';
 
-const html = await renderApplicationHtml(readFileSync(new URL('../index.html', import.meta.url), 'utf8'));
+const html = await renderApplicationHtml(
+  readFileSync(new URL('../index.html', import.meta.url), 'utf8'),
+);
 const css = readStylesheet(new URL('../style.css', import.meta.url));
 
 test('Contacts and Space Missions both participate in the ordinary Tab sequence', () => {
-  for (const id of ['global-context-flights-btn', 'global-context-missions-btn']) {
-    const button = html.match(new RegExp(`<button id="${id}"[\\s\\S]*?</button>`));
+  for (const id of [
+    'global-context-flights-btn',
+    'global-context-missions-btn',
+  ]) {
+    const button = html.match(
+      new RegExp(`<button id="${id}"[\\s\\S]*?</button>`),
+    );
     assert.ok(button, `${id} is missing`);
     assert.match(button[0], /role="tab"/);
     assert.match(button[0], /tabindex="0"/);
@@ -23,7 +36,10 @@ test('Contacts and Space Missions both participate in the ordinary Tab sequence'
 
   // The view keeps both tabs' tabindex static and never disables them; the
   // transition itself is covered over happy-dom in ui/contextPanel.test.mjs.
-  for (const id of ['global-context-flights-btn', 'global-context-missions-btn']) {
+  for (const id of [
+    'global-context-flights-btn',
+    'global-context-missions-btn',
+  ]) {
     const tag = contextView.match(new RegExp(`<button id="${id}"[^>]*>`))?.[0];
     assert.ok(tag, `${id} is missing from the view`);
     assert.doesNotMatch(tag, /:tabindex|:disabled|\sdisabled/);
@@ -34,9 +50,22 @@ test('Context activation and Clear All never native-disable tabs and guard repea
   const init = _initGlobalContextPanel.toString();
   const select = _selectContextMode.toString();
   const clear = clearSelectedLayers.toString();
-  assert.equal((init.match(/if \(\s*this\.destroyed\s*\|\|\s*this\._contextModeChanging\s*\|\|\s*this\._clearSelectedLayersPromise\s*\)\s*return;/g) || []).length, 2);
-  assert.doesNotMatch(select, /_globalContext(?:Flights|Missions)Btn\.disabled\s*=\s*true/);
-  assert.doesNotMatch(clear, /_globalContext(?:Flights|Missions)Btn\.disabled\s*=\s*true/);
+  assert.equal(
+    (
+      init.match(
+        /if \(\s*this\.destroyed\s*\|\|\s*this\._contextModeChanging\s*\|\|\s*this\._clearSelectedLayersPromise\s*\)\s*return;/g,
+      ) || []
+    ).length,
+    2,
+  );
+  assert.doesNotMatch(
+    select,
+    /_globalContext(?:Flights|Missions)Btn\.disabled\s*=\s*true/,
+  );
+  assert.doesNotMatch(
+    clear,
+    /_globalContext(?:Flights|Missions)Btn\.disabled\s*=\s*true/,
+  );
 });
 
 test('Context tablist retains Left, Right, Home, and End keyboard navigation', () => {
@@ -45,40 +74,62 @@ test('Context tablist retains Left, Right, Home, and End keyboard navigation', (
   assert.match(initSource, /event\.key === 'ArrowLeft'/);
   assert.match(initSource, /event\.key === 'Home'/);
   assert.match(initSource, /event\.key === 'End'/);
-  assert.match(initSource, /contextTabs\[nextIndex\]\.focus\(\{ preventScroll: true \}\)/);
+  assert.match(
+    initSource,
+    /contextTabs\[nextIndex\]\.focus\(\{ preventScroll: true \}\)/,
+  );
   assert.match(initSource, /contextTabs\[nextIndex\]\.click\(\)/);
 });
 
 test('Context tabs draw a visible keyboard-focus outline including active tabs', () => {
   const rules = [...css.matchAll(/([^{}]+)\{([^{}]*)\}/g)];
-  const focusRule = rules.find(([, selector, body]) => (
-    selector.trim().endsWith('.context-mode-button:focus-visible')
-      && /outline:\s*2px solid var\(--text-primary\)/.test(body)
-  ));
-  assert.ok(focusRule, 'Context focus-visible rule must draw a two-pixel outline');
+  const focusRule = rules.find(
+    ([, selector, body]) =>
+      selector.trim().endsWith('.context-mode-button:focus-visible') &&
+      /outline:\s*2px solid var\(--text-primary\)/.test(body),
+  );
+  assert.ok(
+    focusRule,
+    'Context focus-visible rule must draw a two-pixel outline',
+  );
   assert.match(focusRule[2], /outline-offset:\s*-3px/);
 
-  const activeRule = rules.find(([, selector]) => selector.trim().endsWith('.context-mode-button.active'));
+  const activeRule = rules.find(([, selector]) =>
+    selector.trim().endsWith('.context-mode-button.active'),
+  );
   assert.ok(activeRule, 'Context active-state rule is missing');
   assert.doesNotMatch(activeRule[2], /outline:\s*none/);
 });
 
 test('Context async action buttons remain focused while busy', () => {
   const init = _initGlobalContextPanel.toString();
-  const radio = radioBindings.slice(radioBindings.indexOf('const toggleRadio = async (trigger) => {'), radioBindings.indexOf('this._storeToken = this.store?.connect?.('));
-  const radioPanel = readFileSync(new URL('./ui/views/panels/RadioPanel.vue', import.meta.url), 'utf8');
+  const radio = radioBindings.slice(
+    radioBindings.indexOf('const toggleRadio = async (trigger) => {'),
+    radioBindings.indexOf('this._storeToken = this.store?.connect?.('),
+  );
+  const radioPanel = readFileSync(
+    new URL('./ui/views/panels/RadioPanel.vue', import.meta.url),
+    'utf8',
+  );
   const clear = clearSelectedLayers.toString();
 
   assert.match(init, /if \(this\._installationsSearchBusy\) return;/);
   assert.doesNotMatch(init, /\.disabled\s*=\s*true/);
-  const search = contextView.match(/<button id="installations-search-btn"[^>]*>/)?.[0];
+  const search = contextView.match(
+    /<button id="installations-search-btn"[^>]*>/,
+  )?.[0];
   assert.ok(search, 'nearby sites search is missing');
   assert.doesNotMatch(search, /:disabled|\sdisabled/);
   assert.match(search, /:aria-busy=/);
   assert.match(radio, /trigger\.getAttribute\('aria-busy'\) === 'true'/);
   assert.doesNotMatch(radio, /trigger\.disabled\s*=\s*true/);
-  const cockpitRadio = readFileSync(new URL('./ui/views/panels/CockpitUtilityControls.vue', import.meta.url), 'utf8');
-  const cockpitEnable = cockpitRadio.match(/<UiButton id="cockpit-radio-enable-btn"[^>]*>/)?.[0];
+  const cockpitRadio = readFileSync(
+    new URL('./ui/views/panels/CockpitUtilityControls.vue', import.meta.url),
+    'utf8',
+  );
+  const cockpitEnable = cockpitRadio.match(
+    /<UiButton id="cockpit-radio-enable-btn"[^>]*>/,
+  )?.[0];
   assert.ok(cockpitEnable, 'Cockpit Radio Enable button is missing');
   assert.doesNotMatch(cockpitEnable, /disabled(?!=")|:disabled/);
   assert.match(cockpitEnable, /:aria-busy=/);
@@ -89,44 +140,84 @@ test('Context async action buttons remain focused while busy', () => {
   assert.match(enable, /:aria-busy=/);
   assert.match(clear, /this\.setClearBusy\(true\)/);
   // The globe actions view marks the clear button busy, never disabled.
-  const globeActions = readFileSync(new URL('./ui/views/panels/GlobeActions.vue', import.meta.url), 'utf8');
-  const clearButton = globeActions.match(/<button id="clear-selected-layers"[^>]*>/)?.[0];
+  const globeActions = readFileSync(
+    new URL('./ui/views/panels/GlobeActions.vue', import.meta.url),
+    'utf8',
+  );
+  const clearButton = globeActions.match(
+    /<button id="clear-selected-layers"[^>]*>/,
+  )?.[0];
   assert.ok(clearButton, 'Clear selected layers button is missing');
   assert.doesNotMatch(clearButton, /disabled(?!=")|:disabled=/);
   assert.match(clearButton, /:aria-busy=/);
 });
 
-test('Context header holds only its title and collapse control', () => {
-  const panel = html.match(/<div id="global-context-panel"[\s\S]*?<div class="cyber-panel-body[ "]/);
+test('Context header holds only its title, edge switch and collapse control', () => {
+  const panel = html.match(
+    /<div id="global-context-panel"[\s\S]*?<div class="cyber-panel-body[ "]/,
+  );
   assert.ok(panel, 'Global Context panel is missing');
-  const header = panel[0].match(/<div class="ui-panel__head panel-header">([\s\S]*?)<\/div>\s*<div class="cyber-panel-body[ "]/);
+  const header = panel[0].match(
+    /<div class="ui-panel__head panel-header">([\s\S]*?)<\/div>\s*<div class="cyber-panel-body[ "]/,
+  );
   assert.ok(header, 'Global Context header is missing');
   // The kit's own ui-* classes carry no Core styles.
-  const tags = [...header[1].matchAll(/<(\w+)\s+(?:type="button"\s+)?class="([^"]+)"/g)].map(([, tag, cls]) =>
-    `${tag}.${cls.split(' ').filter((name) => !/^ui-/.test(name)).join(' ')}`);
-  assert.deepEqual(tags, ['span.panel-title', 'span.panel-divider', 'button.panel-collapse-btn']);
+  const tags = [
+    ...header[1].matchAll(/<(\w+)\s+(?:type="button"\s+)?class="([^"]+)"/g),
+  ].map(
+    ([, tag, cls]) =>
+      `${tag}.${cls
+        .split(' ')
+        .filter((name) => !/^ui-/.test(name))
+        .join(' ')}`,
+  );
+  assert.deepEqual(tags, [
+    'span.panel-title',
+    'span.panel-divider',
+    'button.panel-edge-btn',
+    'span.material-symbols-outlined',
+    'button.panel-collapse-btn',
+  ]);
 });
 
 test('Context reads as one segmented control with legible type and no halo', () => {
   const rules = [...css.matchAll(/([^{}]+)\{([^{}]*)\}/g)];
-  const clean = (selector) => selector.replace(/\/\*[\s\S]*?\*\//g, '').replace(/\s+/g, ' ').trim();
-  const rule = (selector) => rules.find(([, s]) => clean(s) === selector)?.[2] || '';
-  const px = (body, prop) => Number(body.match(new RegExp(`${prop}:[^;]*?(\\d+(?:\\.\\d+)?)px`))?.[1] || 0);
+  const clean = (selector) =>
+    selector
+      .replace(/\/\*[\s\S]*?\*\//g, '')
+      .replace(/\s+/g, ' ')
+      .trim();
+  const rule = (selector) =>
+    rules.find(([, s]) => clean(s) === selector)?.[2] || '';
+  const px = (body, prop) =>
+    Number(
+      body.match(new RegExp(`${prop}:[^;]*?(\\d+(?:\\.\\d+)?)px`))?.[1] || 0,
+    );
 
   assert.match(rule('#global-context-panel .panel-glow'), /display:\s*none/);
   const modes = rule('.global-context-modes');
   assert.match(modes, /border:\s*1px solid/);
   assert.match(modes, /padding:\s*2px/);
-  assert.ok(px(rule('.context-mode-button'), 'font') >= 10, 'mode labels must stay at least 10px');
+  assert.ok(
+    px(rule('.context-mode-button'), 'font') >= 10,
+    'mode labels must stay at least 10px',
+  );
   assert.doesNotMatch(rule('.context-mode-button.active'), /box-shadow/);
   const standby = rule('.context-mode-standby');
-  assert.ok(px(standby, 'font') >= 10, 'standby guidance must stay at least 10px');
+  assert.ok(
+    px(standby, 'font') >= 10,
+    'standby guidance must stay at least 10px',
+  );
   assert.doesNotMatch(standby, /dashed/);
-  assert.ok(px(rule('.global-context-actions .panel-layer-toggle'), 'font-size') >= 10);
+  assert.ok(
+    px(rule('.global-context-actions .panel-layer-toggle'), 'font-size') >= 10,
+  );
   // The shared rail title colour (brighter than --text-secondary) keeps the
   // open Context title legible; no Context-only rule dims it again.
   assert.equal(
-    rule(":root:not([data-ui-theme='cyber']) #global-context-panel:not(.collapsed) .panel-title"),
+    rule(
+      ":root:not([data-ui-theme='cyber']) #global-context-panel:not(.collapsed) .panel-title",
+    ),
     '',
   );
 });
diff --git a/src/i18n/locales/ar.json b/src/i18n/locales/ar.json
index ebdc0ef99..e882d6f29 100644
--- a/src/i18n/locales/ar.json
+++ b/src/i18n/locales/ar.json
@@ -3967,5 +3967,7 @@
   "Cable car": "ترام كابلي",
   "Monorail": "قطار أحادي السكة",
   "Funicular": "قطار جبلي مائل",
-  "Gondola": "تلفريك"
+  "Gondola": "تلفريك",
+  "Move panels back beside the rail": "إعادة اللوحات إلى جانب الشريط",
+  "Move panels over the rail, to the edge": "نقل اللوحات فوق الشريط إلى الحافة"
 }
diff --git a/src/i18n/locales/de.json b/src/i18n/locales/de.json
index c1bf7dd2a..4dbecb4d1 100644
--- a/src/i18n/locales/de.json
+++ b/src/i18n/locales/de.json
@@ -3619,5 +3619,7 @@
   "Cable car": "Kabelstraßenbahn",
   "Monorail": "Einschienenbahn",
   "Funicular": "Standseilbahn",
-  "Gondola": "Gondelbahn"
+  "Gondola": "Gondelbahn",
+  "Move panels back beside the rail": "Bedienfelder zurück neben die Leiste",
+  "Move panels over the rail, to the edge": "Bedienfelder über die Leiste an den Rand verschieben"
 }
diff --git a/src/i18n/locales/es.json b/src/i18n/locales/es.json
index 1ba3bc810..f63dae030 100644
--- a/src/i18n/locales/es.json
+++ b/src/i18n/locales/es.json
@@ -3706,5 +3706,7 @@
   "Cable car": "Tranvía de cable",
   "Monorail": "Monorraíl",
   "Funicular": "Funicular",
-  "Gondola": "Góndola"
+  "Gondola": "Góndola",
+  "Move panels back beside the rail": "Devolver los paneles junto a la barra",
+  "Move panels over the rail, to the edge": "Mover los paneles sobre la barra, hasta el borde"
 }
diff --git a/src/i18n/locales/fr.json b/src/i18n/locales/fr.json
index cb82ee62b..8f1996cde 100644
--- a/src/i18n/locales/fr.json
+++ b/src/i18n/locales/fr.json
@@ -3706,5 +3706,7 @@
   "Cable car": "Tramway à câble",
   "Monorail": "Monorail",
   "Funicular": "Funiculaire",
-  "Gondola": "Télécabine"
+  "Gondola": "Télécabine",
+  "Move panels back beside the rail": "Remettre les panneaux à côté de la barre",
+  "Move panels over the rail, to the edge": "Déplacer les panneaux par-dessus la barre, jusqu’au bord"
 }
diff --git a/src/i18n/locales/he.json b/src/i18n/locales/he.json
index 80943335a..c848be0bd 100644
--- a/src/i18n/locales/he.json
+++ b/src/i18n/locales/he.json
@@ -3706,5 +3706,7 @@
   "Cable car": "חשמלית כבלים",
   "Monorail": "מונורייל",
   "Funicular": "פוניקולר",
-  "Gondola": "רכבל"
+  "Gondola": "רכבל",
+  "Move panels back beside the rail": "החזרת הלוחות לצד הסרגל",
+  "Move panels over the rail, to the edge": "הזזת הלוחות מעל הסרגל, אל הקצה"
 }
diff --git a/src/i18n/locales/it.json b/src/i18n/locales/it.json
index d68693f31..d93a963a5 100644
--- a/src/i18n/locales/it.json
+++ b/src/i18n/locales/it.json
@@ -3706,5 +3706,7 @@
   "Cable car": "Tram a fune",
   "Monorail": "Monorotaia",
   "Funicular": "Funicolare",
-  "Gondola": "Cabinovia"
+  "Gondola": "Cabinovia",
+  "Move panels back beside the rail": "Riporta i pannelli accanto alla barra",
+  "Move panels over the rail, to the edge": "Sposta i pannelli sopra la barra, fino al bordo"
 }
diff --git a/src/i18n/locales/ja.json b/src/i18n/locales/ja.json
index 6c36c71ce..3fb7ad023 100644
--- a/src/i18n/locales/ja.json
+++ b/src/i18n/locales/ja.json
@@ -3532,5 +3532,7 @@
   "Cable car": "ケーブルトラム",
   "Monorail": "モノレール",
   "Funicular": "ケーブルカー",
-  "Gondola": "ゴンドラ"
+  "Gondola": "ゴンドラ",
+  "Move panels back beside the rail": "パネルをレールの横に戻す",
+  "Move panels over the rail, to the edge": "パネルをレールの上、画面端へ移動"
 }
diff --git a/src/i18n/locales/pt.json b/src/i18n/locales/pt.json
index 8864f6d22..a42bf0448 100644
--- a/src/i18n/locales/pt.json
+++ b/src/i18n/locales/pt.json
@@ -3706,5 +3706,7 @@
   "Cable car": "Bonde a cabo",
   "Monorail": "Monotrilho",
   "Funicular": "Funicular",
-  "Gondola": "Teleférico"
+  "Gondola": "Teleférico",
+  "Move panels back beside the rail": "Voltar os painéis para junto da barra",
+  "Move panels over the rail, to the edge": "Mover os painéis sobre a barra, até a borda"
 }
diff --git a/src/i18n/locales/ru.json b/src/i18n/locales/ru.json
index 37c6db315..96efc6e5e 100644
--- a/src/i18n/locales/ru.json
+++ b/src/i18n/locales/ru.json
@@ -3793,5 +3793,7 @@
   "Cable car": "Канатный трамвай",
   "Monorail": "Монорельс",
   "Funicular": "Фуникулёр",
-  "Gondola": "Канатная дорога"
+  "Gondola": "Канатная дорога",
+  "Move panels back beside the rail": "Вернуть панели к боковой панели",
+  "Move panels over the rail, to the edge": "Переместить панели поверх боковой панели к краю"
 }
diff --git a/src/i18n/locales/sv.json b/src/i18n/locales/sv.json
index b1c9887e3..63304ba65 100644
--- a/src/i18n/locales/sv.json
+++ b/src/i18n/locales/sv.json
@@ -3619,5 +3619,7 @@
   "Cable car": "Kabelspårvagn",
   "Monorail": "Enskensbana",
   "Funicular": "Bergbana",
-  "Gondola": "Kabinbana"
+  "Gondola": "Kabinbana",
+  "Move panels back beside the rail": "Flytta tillbaka panelerna bredvid listen",
+  "Move panels over the rail, to the edge": "Flytta panelerna över listen, till kanten"
 }
diff --git a/src/i18n/locales/uk.json b/src/i18n/locales/uk.json
index f59df5624..47db81c3e 100644
--- a/src/i18n/locales/uk.json
+++ b/src/i18n/locales/uk.json
@@ -3793,5 +3793,7 @@
   "Cable car": "Канатний трамвай",
   "Monorail": "Монорейка",
   "Funicular": "Фунікулер",
-  "Gondola": "Канатна дорога"
+  "Gondola": "Канатна дорога",
+  "Move panels back beside the rail": "Повернути панелі до бічної смуги",
+  "Move panels over the rail, to the edge": "Перемістити панелі поверх бічної смуги до краю"
 }
diff --git a/src/i18n/locales/zh-CN.json b/src/i18n/locales/zh-CN.json
index 2c4b5e9df..511b2f4ae 100644
--- a/src/i18n/locales/zh-CN.json
+++ b/src/i18n/locales/zh-CN.json
@@ -3532,5 +3532,7 @@
   "Cable car": "缆索电车",
   "Monorail": "单轨列车",
   "Funicular": "缆索铁路",
-  "Gondola": "缆车"
+  "Gondola": "缆车",
+  "Move panels back beside the rail": "将面板移回侧栏旁",
+  "Move panels over the rail, to the edge": "将面板移到侧栏上方，贴靠边缘"
 }
diff --git a/src/i18n/locales/zh-Hant.json b/src/i18n/locales/zh-Hant.json
index c9f352964..385b18064 100644
--- a/src/i18n/locales/zh-Hant.json
+++ b/src/i18n/locales/zh-Hant.json
@@ -3532,5 +3532,7 @@
   "Cable car": "纜索電車",
   "Monorail": "單軌列車",
   "Funicular": "纜索鐵路",
-  "Gondola": "纜車"
+  "Gondola": "纜車",
+  "Move panels back beside the rail": "將面板移回側欄旁",
+  "Move panels over the rail, to the edge": "將面板移到側欄上方，貼齊邊緣"
 }
diff --git a/src/ui/panelChromeButtons.test.mjs b/src/ui/panelChromeButtons.test.mjs
index 543a77730..ae3a212c0 100644
--- a/src/ui/panelChromeButtons.test.mjs
+++ b/src/ui/panelChromeButtons.test.mjs
@@ -141,6 +141,7 @@ test("UiPanel draws Core's panel markup and asks for the other state", async (t)
       'demo-badge',
       'panel-divider',
       'demo-action',
+      'panel-edge-btn',
       'panel-collapse-btn',
     ],
   );
diff --git a/src/ui/panelRails.test.mjs b/src/ui/panelRails.test.mjs
index 7edbc854a..ce1c82446 100644
--- a/src/ui/panelRails.test.mjs
+++ b/src/ui/panelRails.test.mjs
@@ -456,13 +456,17 @@ test('natural height includes visible content, margins and wrapper chrome, exclu
 // Outside measurement, CCTV is 391 px in focus and 629 px in normal mode;
 // Removing only the allocation leaves focus CSS active: its next reading is
 // 422 px, so the old decision exits focus and then re-enters on the 629 px read.
-function thrashingRightRail({ focused = false, weatherOpen = false } = {}) {
+function thrashingRightRail({
+  focused = false,
+  weatherOpen = false,
+  tallId = 'cctv-panel',
+} = {}) {
   const f = fixture('right');
   f.options.windowRef.innerHeight = 920;
   f.options.leftStack.rect.top = 439.6;
   f.stack.computed.rowGap = '8px';
   const display = element('pp-toggles', { collapsed: true });
-  const cctv = element('cctv-panel', { height: 629 });
+  const cctv = element(tallId, { height: 629 });
   const weather = element('weather-panel', {
     height: 444,
     collapsed: !weatherOpen,
@@ -533,8 +537,10 @@ for (const focused of [false, true]) {
   });
 }
 
+// The hysteresis applies to panels that size to their content; CCTV and
+// Context take the column's full height whenever they are open.
 test('right rail keeps focus through 30 px content growth inside the hysteresis band', () => {
-  const f = thrashingRightRail();
+  const f = thrashingRightRail({ tallId: 'news-panel' });
   f.run();
   // Header + gap contribute 52 px: need moves 420 -> 450 -> 420.
   for (const height of [368, 398, 368, 398, 368]) {
@@ -551,7 +557,7 @@ test('right rail keeps focus through 30 px content growth inside the hysteresis
 });
 
 test('right rail enters focus only above available height and leaves below the full deadband', () => {
-  const f = thrashingRightRail();
+  const f = thrashingRightRail({ tallId: 'news-panel' });
   f.options.windowRef.innerHeight = 1000;
   f.options.leftStack.rect.top = 500;
   f.cctv.intrinsicHeight = 408; // Need equals available (460 px).
@@ -568,6 +574,16 @@ test('right rail enters focus only above available height and leaves below the f
   assert.equal(f.stack.classList.contains('layout-focus'), false);
 });
 
+test('an open CCTV panel takes the full column however short its content', () => {
+  const f = thrashingRightRail();
+  f.cctv.intrinsicHeight = 200;
+  f.run();
+  assert.equal(f.stack.classList.contains('layout-focus'), true);
+  f.cctv.classList.add('collapsed');
+  f.run();
+  assert.equal(f.stack.classList.contains('layout-focus'), false);
+});
+
 test('right rail settles a second tall panel through the accordion in one pass', () => {
   const f = thrashingRightRail({ weatherOpen: true });
   const modes = [];