bindings: the catalogue audit book-pipeline had its own copy of

bibclean is "catalogue records audited and repaired, with a reason for every
change", and book-pipeline's metadata module was a second implementation of
the same thing — ported from it in the first place. Twelve functions bound:
the audit, its severity, the two commonest faults, the three repairs that
need no lookup, ISBNs checked and found, and whether two titles name the same
work.

Checked against that Python across all 5,385 books in the library — every
title, every author, every ISBN, every filename, and four thousand title
pairs. Identical on all of it but one: `The Soul After Death: Contemporary
'After-Death' Experiences`, where the Python lowercased a word inside the
quotation marks and bibclean leaves it alone.

crates/bindings/README.md

@@ -84,6 +84,12 @@ except ValueError as why:
 | `canonical_subject` | what a closed subject scheme calls a heading |
 | `compose_subjects` | the subjects a book should carry under one |
 | `needs_subject` | whether it carries a heading the scheme knows |
+| `clean_record` | a whole catalogue record audited and repaired |
+| `record_problems`, `record_severity` | what is wrong with one, and how much |
+| `title_in_author`, `looks_like_person` | the two commonest catalogue faults |
+| `is_shouting`, `title_case`, `clean_underscores` | the repairs that need no lookup |
+| `valid_isbn`, `isbn_from_text`, `isbn_from_filename` | ISBNs, checked and found |
+| `same_work` | whether two titles name the same book |
 | `citation_prompt` | the question `citefind --prompt` writes |
 | `merge_citation_reply` | what `citefind --merge` does with the answer |