infiniT Thanks! Both the PDF and EPUB look great, with clean metadata. The EPUB even has proper code formatting.
The different cover should be a non-issue. Packt may have just re-issued it with new branding. The title page says "SANIC IS AN IMPRINT OF PACKT PUBLISHING".
From pdfinfo:
Creator: Adobe InDesign 17.1 (Windows)(Infix Pro)
Producer: Adobe PDF Library 16.0.5
CreationDate: Fri Feb 25 03:07:43 2022 PST
ModDate: Wed Feb 22 14:00:55 2023 PST