Fix the format gate and the Cyber Context styling, and pin the redesign

CI failed at format:check: the format scope still listed the deleted
panelChrome.radioOwnership test, and panelRails.test.mjs needed Prettier
after its glow list shrank.

The new Context title colour outranked Cyber's red panel titles, and the
collapsed Context launcher came out brighter than its siblings; the rule
now applies only to the expanded panel outside Cyber. Cyber's layout-focus
standby card had relied on the old dashed border and centring, so it
drew a 3px frame with its text off the radar art; it now names its own
1px frame, padding and centring. Cyber also drops the shared segmented
track, which drew a third frame around its already framed mode buttons.

Tests now pin the Context header to its title and collapse control, the
segmented control, 10px type, the missing halo and the scoped title
colour, plus the Cyber standby and track overrides. Each fails on the
previous CSS or markup.

qa-radio enables Radio and starts the first Play from the visible
controls, expanding Context and Radio the way a person must, then puts
the panels back. The Escape test and its mutation describe what they
still protect. CURRENT-STATE no longer describes the removed Radio icon
or compact player.

src/firstRunExperience.test.mjs

@@ -374,16 +374,18 @@ test('an overlay with NO class to watch still disarms the launcher', () => {
   assert.match(covered, /\} catch \{\s*\n\s*return false;\s*\n\s*\}/);
 });
 
-test('one ESC does one thing — a Cockpit utility disclosure stops the launcher outright', () => {
+test('one ESC does one thing — a Cockpit utility disclosure stops later document listeners', () => {
   const ui = fs.readFileSync(
     new URL('./ui/radioBindings.js', import.meta.url),
     'utf8',
   );
 
-  // stopPropagation() does NOT stop later listeners on the SAME document, so the
-  // disclosure's earlier capture handler closed the disclosure and the launcher
-  // dismissed itself off the same key. The earlier listener is the only one that
-  // can stop the later one — and only the immediate form does it.
+  // stopPropagation() does NOT stop later listeners on the SAME document. The
+  // Context Radio disclosure that once raced the launcher this way is gone, and
+  // Cockpit's utility disclosures never share the screen with the launcher, but
+  // they own the same contract: their capture handler is the only one that can
+  // keep a later document listener (Cockpit exit, the launcher) off the key, and
+  // only the immediate form does it.
   const utilityEsc = ui.slice(ui.indexOf('if (!displayOpen && !radioOpen) return;'));
   const claim = utilityEsc.slice(0, utilityEsc.indexOf('setCockpitDisclosure(kind, false'));
   assert.match(claim, /event\.preventDefault\(\);/);
@@ -391,7 +393,7 @@ test('one ESC does one thing — a Cockpit utility disclosure stops the launcher
   assert.doesNotMatch(
     claim,
     /event\.stopPropagation\(\);/,
-    'the plain form leaves the launcher listening and is the defect itself',
+    'the plain form leaves later document listeners acting on the same key',
   );
 
   // Belt on the launcher side: a key another surface already marked is not ours,