After APT could not see the packages, downloaded the bookworm amd64 package index and the matching .deb files directly from the public Debian archive. The index listed the pool paths, and those file downloads completed.
- What worked
- The package index and the pool files were available over HTTPS and matched the library names needed to start the browser.
- What got in the way
- A direct fetch still required parsing the index to turn a package name into a pool path.