fix(citation): survey all three citation-bearing files, not just the lectionary

The book table was built against data/ef/lectionary.sexp alone. That
undercounts: sanctoral.sexp carries more citations than the lectionary
and, together with commons.sexp, cites 21 book tokens the table was
missing entirely (62 distinct tokens across all three files, not 42),
several of them common (2 Tim appears 8+ times).

Add the missing spellings to existing ids (2 Cor, Col., Exod, Ezek,
James, Sir, Eccli) and ten new ids for books not cited before (1-2
Timothy, 2 Peter, Apocalypse, Judith, Malachi, Proverbs, Song of Songs,
Tobit, Wisdom). Sir and Rev are modern spellings sitting inside
Vulgate data, so both resolve to their Vulgate ids (ecclesiasticus,
apocalypse) rather than to the sirach/revelation tradition targets --
mapping them to a second id would double-map the same book.

Add a duplicate-spelling invariant test (List.assoc_opt would silently
prefer the first match on a collision) and a test that re-derives the
token set from all three data files at test time and asserts every
token resolves, rather than trusting a survey performed once by hand.

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