**#63** — Replaced emoji placeholders with actual book covers:
- book-cover-soil.webp (The Soil Beneath the Code)
- book-cover-walk.webp (A Walk in Mentoring)
- book-cover-dark-provenance.svg (placeholder for Dark Provenance)
- Updated books.astro with img tags, alt text, lazy loading
- Added CSS styling for book cover images with subtle shadow
**#64** — Waitlist form already functional via Formspree