Speed up the app, run production build, remove chunk ink, start App.jsx split

Performance:
- Lazy-load pages, docx, and mammoth (initial JS 1,298 KB -> ~290 KB)
- Gzip responses and cache hashed assets for a year
- Memoize DrawCanvas strokes so ink isn't redrawn on every render
- Precompute whole-Bible search index and defer the query while typing
- Reload once if a lazy chunk is missing after a deploy

Deployment:
- setup.sh builds and runs one production server on APP_PORT (default
  5173); --dev keeps the old Vite dev setup
- Session cookie uses secure: 'auto' so login works behind any proxy

Chunk editor:
- Remove the Draw layout, Ink Notes panel, and ink in HTML export
  (existing inkStrokes data is left in saved projects)

Refactor:
- Move module-level helpers out of App.jsx into src/utils/*
- Extract Bible reader state and logic into hooks/useBibleReader

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

src/main.jsx

@@ -7,6 +7,15 @@ if ('serviceWorker' in navigator) {
   navigator.serviceWorker.register('/sw.js').catch(() => {});
 }
 
+// Pages are lazy-loaded chunks. If a deploy happened while this tab was open,
+// the old chunk files are gone — reload once to pick up the new build.
+window.addEventListener('vite:preloadError', () => {
+  if (sessionStorage.getItem('chunk-reload')) return;
+  sessionStorage.setItem('chunk-reload', '1');
+  window.location.reload();
+});
+window.addEventListener('load', () => sessionStorage.removeItem('chunk-reload'));
+
 ReactDOM.createRoot(document.getElementById('root')).render(
   <StrictMode>
     <App />