fix(i18n): keep English pixel-identical and stored data English

From the English-parity and breakage review against main:
- English wording back to main: "Configured Source", the "SHARED SUBJECT"
  fallback, CCTV calibration "RANGE 120m".
- Voice header and CCTV calibration chip/select tweaks for long labels now
  apply to non-English only (html:not([lang='en'])); English matches main.
  The scene select font change is scoped the same way.
- New scenes and shots store their default title in English ("Scene 3",
  "Shot 2") and translate it when shown, so a title captured in one language
  does not leak into projects, storage or shared JSON.
- Choosing a language with storage blocked keeps it in ?lang instead of
  silently doing nothing.
- One picked import file shows its name again.
- qa-l9-matrix reads the voice state from data-status, not the label.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/scenes/recipes.js

@@ -1045,8 +1045,10 @@ const BUILTIN_SHOT_TITLES = new Set([
  */
 export function displaySceneTitle(scene) {
   const builtin = SCENE_RECIPES.find((recipe) => recipe.id === scene?.id);
-  if (!builtin?.title) return scene?.title || '';
-  return scene.title === builtin.title ? t(builtin.title) : scene.title;
+  if (builtin?.title && scene.title === builtin.title) return t(builtin.title);
+  const title = scene?.title || '';
+  const numbered = /^Scene (\d+)$/.exec(title);
+  return numbered ? t('Scene {n}', { n: Number(numbered[1]) }) : title;
 }
 
 /**