fix(flights): address review — quotable squawk only, all military tint sites, no test churn

- aircraftEmergency: `source` is 'squawk' only when the Mode A code itself
  names the status; the Cockpit HUD no longer quotes an unrelated squawk
  (e.g. SQUAWK 1200 on an ADS-B `downed` status).
- military: new billboards and the untrack restore use the fleet tint, so an
  emergency stays red instead of snapping back to amber; tint helpers take the
  record already in hand instead of a second lookup.
- cockpit/cyber CSS: emergency colour via a custom property / theme token,
  meta line bolded so the status does not rely on colour alone in the HUD.
- tests: revert Prettier churn in unscoped test files; only semantic edits.
- docs/CURRENT-STATE.md: transponder emergency highlighting section.
- qa-emergency-squawk: (iv) RELEASE check; new files added to format scope.

Co-Authored-By: Claude <[email protected]>

src/data/aircraftEmergency.test.mjs

@@ -39,6 +39,15 @@ test('the ADS-B emergency field wins, and `none` defers to the squawk', () => {
     aircraftEmergency({ squawk: '7700', emergency: 'none' }).source,
     'squawk',
   );
+  assert.equal(
+    aircraftEmergency({ squawk: '7700', emergency: 'general' }).source,
+    'squawk',
+    'a code that names the status stays quotable',
+  );
+  assert.equal(
+    aircraftEmergency({ squawk: '1200', emergency: 'general' }).source,
+    'ads-b',
+  );
   assert.equal(aircraftEmergency({ emergency: 'downed' }).kind, 'downed');
   assert.equal(aircraftEmergency({ emergency: 'none' }), null);
   assert.equal(aircraftEmergency({ emergency: 'reserved' }), null);