Expand PDF diff with P 22-2 variants

[praseodym]

What & why

Expand PDF diff with P 22-2 variants as noted in #3461 (comment). All variants are configured in backend/src/bin/gen-pdf.rs, which now also writes a manifest file that pdf-diff.js uses to link PDF files to the Typst templates.

How to test

See CI. Because the manifest doesn't exist for main, all PDF files will probably get reported as new.

Reviewer notes

None.

[codecov]

Codecov Report

❌ Patch coverage is 59.25926% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.10%. Comparing base (2c4eef8) to head (5565961).
⚠️ Report is 2 commits behind head on main.

[Lionqueen94]

Amazing that we can add the variants now! 😄
It seems like the artifact upload goes wrong though:
No files were found with the provided path: backend/tmp-pdf-gen/diffs/. No artifacts will be uploaded.
The zip download results in a 404 right now.

[praseodym]

See CI. Because the manifest doesn't exist for main, all PDF files will probably get reported as new.

All files get reported as 'New'

It seems like the artifact upload goes wrong though:
No files were found with the provided path: backend/tmp-pdf-gen/diffs/. No artifacts will be uploaded.
The zip download results in a 404 right now.

Because all files are new, there is nothing to diff in this branch

[Lionqueen94]

See CI. Because the manifest doesn't exist for main, all PDF files will probably get reported as new.

All files get reported as 'New'

It seems like the artifact upload goes wrong though:
No files were found with the provided path: backend/tmp-pdf-gen/diffs/. No artifacts will be uploaded.
The zip download results in a 404 right now.

Because all files are new, there is nothing to diff in this branch

Ah I expected to have files with fully new text, but I guess nothing to diff against and then not showing the file at all makes sense.