fix(cli): render the Second reading on colitur readings

The OF lectionary (data/of/lectionary.sexp) carries 183 Second readings,
146 of them on Sunday keys, and the kernel resolves them correctly -- but
readings_line (EF) and readings_line_of (OF) in bin/main.ml only ever
printed Citation.First and Citation.Gospel, so `colitur readings --rite of`
silently dropped every Second reading it computed.

Both functions gain a second_suffix lookup, spliced between the existing
First and Gospel fields, present only when the day carries a Second
citation. No rite check: EF's citation_shapes is [[First; Gospel]] alone,
so EF rows are unaffected by construction, not by special-casing.

EF byte-identity verified two ways: `git diff --stat v1.0.0..HEAD --
data/ef/` is empty, and `colitur day`/`colitur readings --rite ef` for
2026, 1583 and 9999 cmp identical against a build of the prior commit.

test/cli.t: fixed the one now-stale assertion and added coverage for the
three-citation OF Sunday shape alongside the unchanged two-citation OF
weekday and EF shapes.

1 files changed, 19 insertions, 1 deletions

diff --git a/test/cli.t b/test/cli.t
index 86291a6..588616c 100644
--- a/test/cli.t
+++ b/test/cli.t
@@ -230,7 +230,25 @@ The OF rite resolves too, same two commands, its own vocabulary:
   $ colitur readings --rite of 2026 | wc -l
   365
   $ colitur readings --rite of 2026 | head -1
-  2026-01-01 of-mary-mother-of-god | Num 6:22-27 | Luc 2:16-21
+  2026-01-01 of-mary-mother-of-god | Num 6:22-27 | Gal 4:4-7 | Luc 2:16-21
+
+fix-render-second-report (2026-08-26): the Second reading (OLM n. 67) now
+renders between First and Gospel on the days that carry one -- a Sunday or
+solemnity, [Rite.t.citation_shapes] on the OF side -- and is simply absent
+(not printed as "-") on every other day, so an OF weekday's row keeps the
+same two-citation shape it always had:
+
+  $ colitur readings --rite of 2026 | grep '^2026-11-29 '
+  2026-11-29 of-advent-sunday-1 | Isai 63:16b-17, 19b; 64:2-7 | 1 Cor 1:3-9 | Marc 13:33-37
+  $ colitur readings --rite of 2026 | grep '^2026-01-05 '
+  2026-01-05 of-christmas-1-monday | 1 Ioann 3:11-21 | Ioann 1:43-51
+
+EF's own `citation_shapes` is `[First; Gospel]` alone -- no EF day ever
+carries a Second reading, so EF's `readings` row is unaffected, still
+exactly two citation fields:
+
+  $ colitur readings --rite ef 2026 | grep '^2026-01-01 '
+  2026-01-01 ef-circumcision | Tit 2:11-15 | Luc 2:21 | In Octava Nativitatis Domini
 
 Fix wave I1 (final-review.md): a sanctoral-origin OF day names through its
 OWN transcribed title (calendar-2002.sexp, amended by 011's own rename),