Make fewer IQ Bible calls

- Load the narrator list only when the audio dropdown is opened
- Keep today's verse and devotional in memory for an hour (not saved)
- Back off for a minute after 'allowance used up' or unreachable; keep 'nothing here' answers
- Server shares one upstream call between identical simultaneous requests (nothing stored)

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

src/pages/HomePage.jsx

@@ -3,7 +3,7 @@ import { useApp } from '../context/AppContext.js';
 import { filterStudies, groupBySeries, isTagQuery, seriesList, tagCounts } from '../utils/studyFilter.js';
 import BookCover from '../components/BookCover.jsx';
 import IqDailyCard from '../components/iq/IqDailyCard.jsx';
-import IqNarratorOptions from '../components/iq/IqNarratorOptions.jsx';
+import IqNarratorOptions, { useLazyNarrators } from '../components/iq/IqNarratorOptions.jsx';
 import PageShell from '../components/study/PageShell.jsx';
 import AudioPlayer from '../components/AudioPlayer.jsx';
 import {
@@ -49,6 +49,7 @@ export default function HomePage() {
     handleSeekAudio,
     handleSeekAudioTo,
   } = useApp();
+  const narrators = useLazyNarrators(audioNarrator);
   const [homeSearch, setHomeSearch] = useState('');
   const [homeSort, setHomeSort] = useState(() => {
     try { return localStorage.getItem('homeSort') || 'recent'; } catch { return 'recent'; }
@@ -343,11 +344,11 @@ export default function HomePage() {
                 <select value={audioBook} onChange={(e) => setAudioBook(e.target.value)} disabled={audioState.status === 'playing' || audioState.status === 'paused'} className={fieldCls}>
                   {bookOptions.map((book) => <option key={book.abbrev} value={book.abbrev}>{book.name}</option>)}
                 </select>
-                <select value={audioNarrator} onChange={(e) => setAudioNarrator(e.target.value)} disabled={audioState.status === 'playing' || audioState.status === 'paused'} className={fieldCls}>
+                <select value={audioNarrator} onChange={(e) => setAudioNarrator(e.target.value)} disabled={audioState.status === 'playing' || audioState.status === 'paused'} className={fieldCls} {...narrators.selectProps}>
                   <option value="david">David</option>
                   <option value="hays">Hays</option>
                   <option value="souer">Souer</option>
-                  <IqNarratorOptions />
+                  <IqNarratorOptions enabled={narrators.enabled} />
                 </select>
               </>
             )}