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/ui/styles/scenes.css

@@ -158,9 +158,8 @@
   border-radius: 7px;
   color: var(--text-primary);
   padding: 6px 8px;
-  font-family: var(--font-mono);
-  font-size: 10px;
-  letter-spacing: 0.04em;
+  font-family: var(--font-sans);
+  font-size: 12px;
   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;
@@ -466,3 +465,9 @@
 .director-sharing-dialog::backdrop {
   background: rgba(0, 8, 14, 0.65);
 }
+
+html:not([lang='en']) #scene-select {
+  font-family: var(--font-mono);
+  font-size: 10px;
+  letter-spacing: 0.04em;
+}