Pin the retired Operator code and test the live HUD fallback

qa-radio cycles Minimal, off, on, then Tactical, so the HUD toggle must
restore a non-default layout, and expects that sequence instead of the
removed Operator step.

The share-link test pins the exact hudVariant codes, so dropping or
moving operator's reserved code fails it. A live IntelHUD test checks
that a retired Operator layout falls back to Tactical, and the Cyber
test stub themes from the normalized value.

The share-link table marks operator as retired, and the zh-CN glossary
drops the removed string.

src/ui/cyberTheme.test.mjs

@@ -56,7 +56,7 @@ function styleOwner(t, initialVariant = 'cyber') {
     setVariant: (value) => {
       // Normalize like the real HUD so retired layouts fall back.
       variant = normalizeHudLayout(value);
-      applyHudUiTheme(root, value);
+      applyHudUiTheme(root, variant);
     },
     setMode: (value) => calls.push(['mode', value]),
     onStyleChange: (value) => calls.push(['style', value]),