- Replace bare ← back-to-book link with ☰ (hamburger) icon to eliminate
the visual double-arrow confusion with the ← Prev chapter button
- Export SplitChapterTitle in writer package and call it in handleChapter
to split the raw heading into (title, date) — fixes concatenated title+date bug
- Display ChapterDate as a smaller muted line below the chapter title
in the center nav button
- Bump nav bar height from h-12 to h-14 to accommodate two-line center button