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/layers/flights/rendering.js

@@ -58,23 +58,23 @@ export function createRendering({
 
   /** True while this contact's latest poll broadcast an emergency code. */
 
-  function _isEmergency(icao24) {
-    return isEmergency(flightState.records.data.get(icao24)?.emergency);
+  function _isEmergency(icao24, info = flightState.records.data.get(icao24)) {
+    return isEmergency(info?.emergency);
   }
 
   /** Fleet (untracked) billboard tint: red while broadcasting an emergency,
    *  amber for known-military, white otherwise.
    *  Ground traffic gets NO special tint (owner verdict 2026-07-03 field test). */
 
-  function _fleetBillboardColor(icao24) {
-    if (_isEmergency(icao24)) return EMERGENCY_TINT;
+  function _fleetBillboardColor(icao24, info) {
+    if (_isEmergency(icao24, info)) return EMERGENCY_TINT;
     return isMilitaryIcao(icao24) ? MIL_TINT : Cesium.Color.WHITE;
   }
 
   /** Cockpit far-contact dot tint: the emergency red outranks the category tint. */
 
-  function _cockpitContactColor(icao24) {
-    if (_isEmergency(icao24)) return EMERGENCY_TINT;
+  function _cockpitContactColor(icao24, info) {
+    if (_isEmergency(icao24, info)) return EMERGENCY_TINT;
     return isMilitaryIcao(icao24) ? MIL_TINT : COCKPIT_CIVILIAN_COLOR;
   }
 
@@ -1024,8 +1024,8 @@ export function createRendering({
         flightState._cockpitNearContacts.has(icao24);
       const layerBaseColor =
         flightState._cockpitContactMode && !isCockpitNear
-          ? _cockpitContactColor(icao24)
-          : _fleetBillboardColor(icao24);
+          ? _cockpitContactColor(icao24, info)
+          : _fleetBillboardColor(icao24, info);
       const baseColor = layerBaseColor;
       const treatment = applyAircraftBillboardTreatment({
         billboard: bb,