kernel+ef: resolve readings, chain steps 1 and 2

Liturgical_day.citations has read "always empty until Plan 4" since Plan 3;
it is now filled. Rite.t gains a readings function, rite-supplied for the
same reason transfer_target is: what a day with no proper falls back to is a
rubric, not a universal. Calendar calls it and passes its own temporal
function as the callback the rite needs to reach another date.

Steps 1 and 2 only: the observed celebration's own proper, else the day's own
temporal slug. Nothing encodes "Lent has daily propers" -- the presence of an
entry is the discriminator.

4 files changed, 80 insertions, 3 deletions

diff --git a/test/test_calendar.ml b/test/test_calendar.ml
index 22f5f04..2f6df6d 100644
--- a/test/test_calendar.ml
+++ b/test/test_calendar.ml
@@ -99,9 +99,13 @@ module Fixture = struct
     let rec search d = if (occupant d).Cel.rank = Lo then d else search (D.add_days d 1) in
     search (D.add_days origin 1)
 
+  (* No fixture here exercises citations -- readings is a harmless constant
+     [], the same role [empty_layer] plays for the sanctoral side. *)
+  let readings ~observed:_ ~temporal:_ ~date:_ ~temporal_at:_ = []
+
   let rite : (season, rank) Rite.t =
     { Rite.id = "synthetic-calendar"; vocab; year_start; temporal; anchors = (fun _ -> []);
-      rules; season_runs = [ A; B ]; transfer_target }
+      rules; season_runs = [ A; B ]; transfer_target; readings }
 
   let entry ~month ~day ~slug ~rank =
     { Layer.date = (match Date_spec.fixed ~month ~day with Ok d -> d | Error e -> failwith e);
diff --git a/test/test_colitur.ml b/test/test_colitur.ml
index 66aec59..db2d41c 100644
--- a/test/test_colitur.ml
+++ b/test/test_colitur.ml
@@ -5,4 +5,5 @@ let () =
       Test_overlay.suite; Test_temporal_ef.suite; Test_validate.suite; Test_precedence.suite;
       Test_calendar.suite; Test_precedence_ef.suite; Test_sanctoral_ef.suite; Test_rite_ef.suite;
       Test_differential.suite; Test_oracle.suite; Test_golden.suite;
-      ("lectionary", Test_lectionary.suite) ]
+      ("lectionary", Test_lectionary.suite);
+      ("lectionary-ef", Test_lectionary_ef.suite) ]
diff --git a/test/test_lectionary_ef.ml b/test/test_lectionary_ef.ml
new file mode 100644
index 0000000..a1a324f
--- /dev/null
+++ b/test/test_lectionary_ef.ml
@@ -0,0 +1,68 @@
+open Colitur_kernel
+open Rite_ef
+
+(* Same pattern test_rite_ef.ml already uses: both [Calendar.year] and
+   [Calendar.day] take the rite AND the sanctoral layer (Rite.t carries no
+   layer of its own -- see rite_ef.mli's own note on why), so step 1's
+   sanctoral-proper case needs the REAL data/ef/sanctoral.sexp +
+   data/ef/adjustments.sexp loaded, not a bare [Rite_ef.context]. Relative
+   to this test's own build directory (_build/default/test/); test/dune
+   declares both as deps. *)
+let sanctoral_path = "../data/ef/sanctoral.sexp"
+let adjustments_path = "../data/ef/adjustments.sexp"
+
+let real_layer () =
+  let layer =
+    match Layer.load Vocab_ef.rank_of_sexp sanctoral_path with
+    | Ok l -> l
+    | Error e -> Alcotest.failf "%s: failed to load: %s" sanctoral_path e
+  in
+  let overlay =
+    match Overlay.load Vocab_ef.rank_of_sexp adjustments_path with
+    | Ok o -> o
+    | Error e -> Alcotest.failf "%s: failed to load: %s" adjustments_path e
+  in
+  let layer, diagnostics = Overlay.apply layer overlay in
+  Alcotest.(check (list string)) "the committed overlay applies cleanly, no diagnostics" []
+    (List.map Overlay.diagnostic_to_string diagnostics);
+  layer
+
+(* [Calendar.day] (not [year]): the liturgical year "opening in civil year y"
+   is Advent-anchored (RG 61), so [Calendar.year _ _ 2030] covers Advent 2030
+   through November 2031 -- it would never contain 13 January 2030, which
+   belongs to the liturgical year that opened in Advent 2029. [Calendar.day]
+   finds the containing liturgical year itself; see calendar.mli. *)
+let day y m d =
+  let date = match Date.make ~year:y ~month:m ~day:d with
+    | Ok x -> x | Error e -> Alcotest.fail e in
+  Calendar.day Rite_ef.context (real_layer ()) date
+
+let refs (ld : _ Liturgical_day.t) =
+  List.map (fun c -> c.Citation.reference) ld.citations
+
+(* Chain step 1: the observed celebration's own proper wins.
+
+   NOT 2030: that is the one pinned collision year (test_golden.ml,
+   [test_holy_family_excludes_baptism_2030]) where 13 January is itself the
+   Holy Family Sunday and RG 112(a) excludes the Baptism commemoration
+   entirely -- [observed] there is [ef-time-after-epiphany-sunday-1], not
+   this slug, so it is the wrong year to exercise step 1 against. 2026 is an
+   ordinary year (13 January a Tuesday, no Sunday collision), where the
+   fixed Commemoration of the Baptism of the Lord (Class2, subject Lord,
+   data/ef/sanctoral.sexp) is observed outright. *)
+let test_step1_sanctoral_proper () =
+  Alcotest.(check (list string))
+    "13 January 2026, Commemoration of the Baptism of the Lord"
+    [ "Isa 60:1-6"; "John 1:29-34" ]
+    (refs (day 2026 1 13))
+
+(* Chain step 2: the day's own temporal slug has a proper (Lent has one daily). *)
+let test_step2_lenten_feria_has_its_own () =
+  Alcotest.(check (list string))
+    "Monday of the 1st week of Lent is not the Sunday's Mass"
+    [ "Ezech 34:11-16"; "Matt 25:31-46" ]
+    (refs (day 2026 2 23))
+
+let suite =
+  [ ("step 1: sanctoral proper", `Quick, test_step1_sanctoral_proper);
+    ("step 2: own temporal proper", `Quick, test_step2_lenten_feria_has_its_own) ]
diff --git a/test/test_validate.ml b/test/test_validate.ml
index 501dd2e..9fa3c5c 100644
--- a/test/test_validate.ml
+++ b/test/test_validate.ml
@@ -276,10 +276,14 @@ module Synthetic = struct
      defaults against the default empty [layer], since nothing ever contests
      the temporal office there) so the resolution fixtures further down can
      override them without duplicating every other field. *)
+  (* No fixture here exercises citations -- readings is a harmless constant
+     [], the same role the other placeholder defaults above play. *)
+  let readings ~observed:_ ~temporal:_ ~date:_ ~temporal_at:_ = []
+
   let rite ?(vocab = vocab) ?(anchors = fun _ -> []) ?(season_runs = [ A; B ]) ?(rules = rules)
       ?(transfer_target = fun _ origin _ -> origin) temporal : (season, rank) Rite.t =
     { Rite.id = "synthetic"; vocab; year_start; temporal; anchors; rules; season_runs;
-      transfer_target }
+      transfer_target; readings }
 
   (* Empty by default: every check built before Task 12 exercises the
      TEMPORAL-only pass, where an empty layer is exactly the fixture that