Build fixes: offline-safe fonts, Next.js API route type updates, TS strict errors resolved, MUI import cleanup, chat markdown wrapper, Azure OpenAI typing, caching key + chapter API id types, and misc error-logging typings.

app/[locale]/bible/reader.tsx

@@ -532,7 +532,7 @@ export default function BibleReaderNew() {
     return (
       <Box
         key={verse.id}
-        ref={el => { if (el) verseRefs.current[verse.verseNum] = el }}
+        ref={(el: HTMLDivElement | null) => { if (el) verseRefs.current[verse.verseNum] = el }}
         sx={{
           mb: 1,
           display: 'flex',
@@ -1024,4 +1024,4 @@ export default function BibleReaderNew() {
       </Snackbar>
     </Box>
   )
-}
+}