Keep the verse of the day when IQ Bible is down

- Fall back to a built-in verse (one a day, same for everyone) in the reader's own translation
- No translation picker in fallback mode; card shows even with no IQ Bible key

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src/hooks/useIq.js

@@ -3,7 +3,12 @@ import { iqAvailable, iqGet } from '../utils/iqbible.js';
 
 // Whether the server has an IQ Bible key. false until known, so IQ-only UI never flashes up.
 export function useIqAvailable() {
-  const [on, setOn] = useState(false);
+  return useIqStatus() === true;
+}
+
+// Same, but null until the server has answered.
+export function useIqStatus() {
+  const [on, setOn] = useState(null);
   useEffect(() => {
     let live = true;
     iqAvailable().then((v) => { if (live) setOn(v); });