Fix Pronunciation page Speak buttons; tidy App.jsx

PronunciationPage still read speakOriginalWord from context after it
moved to utils/wordStudy, so Speak would have thrown. Import it directly.
App.jsx: consolidate imports, update comments, list all pages.

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

src/pages/PronunciationPage.jsx

@@ -1,9 +1,10 @@
 import { useState } from 'react';
 import { useApp } from '../context/AppContext.js';
 import { buildPronunciationGuide } from '../utils/bibleUtils.jsx';
+import { speakOriginalWord } from '../utils/wordStudy.js';
 
 export default function PronunciationPage() {
-  const { project, speakOriginalWord, setCurrentPage } = useApp();
+  const { project, setCurrentPage } = useApp();
   const [search, setSearch] = useState('');
   const [copied, setCopied] = useState(false);