feat(ef): the Gloria in excelsis, RG 431-432, deferring to Breviary 237-238

Phase 2 of celebrant-rubrics-phase1: colitur rubrics gains a fifth
column, whether the Gloria is said. Follows the Creed's own seam
exactly -- Rite.t.gloria, Liturgical_day.t.gloria, wired through
calendar.ml the same way.

RG 431(a)/432(a) defer the Gloria to the Breviary's own Te Deum rule
(nn. 237-238), so te_deum is implemented as its own named predicate,
cited clause by clause, not collapsed into a colour heuristic. 431(c)
(Holy Thursday, the Easter Vigil Mass) and 432(b)/(d) (violet; a
Requiem) are independent overrides checked ahead of the Te Deum-derived
answer. Every clause this engine has no dimension to model
(votive Mass classes, the wider n.302 "Missa festiva" categories) is
stated as N/A with its own reasoning, not silently dropped.

Validated against the FIUV universal Ordo (Gloria and Te Deum) and all
three LMS editions (Gloria). A first pass over-trusted a clean-looking
15-for-15 FIUV contradiction of 237(b)'s own Septuagesima exception and
replaced it with a blanket "every Sunday" rule; the evidence was itself
corrupted -- the FIUV extractor recognised only one of the source's two
Te Deum negations ("non dicitur", not "sine"), so every "sine Te Deum"
Sunday read wrongly true. Fixed in tools/extract_fiuv_ordo.ml, fixture
re-extracted, and the literal 237(b) reading restored once the
corrected data confirmed it. A second bug surfaced alongside it (Palm/
Passion Sunday wrongly reading true via Temporal_ef.named's own table
membership, then Christ the King wrongly reading false from an
over-broad fix) is closed with an explicit two-slug exclusion.

Domain-wide 1583-9999: every violet or Rose day is gloria=false except
the Easter Vigil (RG 431(c) lex specialis), every Requiem is
gloria=false, both measured exhaustively, zero exceptions. Mutation-
proved: disabling 431(c) reddens 8 tests including all four oracle
comparisons; disabling 238(c)'s feria-I-classis exclusion reddens
exactly the dedicated Ash Wednesday unit test, a genuine blind spot in
both oracle layers, reported rather than hidden.

Two open, cited findings, neither fixed here (out of this task's
"follow creed's exact seam" scope): a privileged Lenten/Passiontide
feria carrying one commemoration reads Gloria=true in the LMS Ordo but
Te-Deum=true/Gloria=false in FIUV -- the two oracles disagree with each
other, not merely with colitur (data/ef/expected-divergences-lms.sexp
L5, expected-divergences-fiuv.sexp F3); and a pre-existing, uncited
Colour.Violet bug on Rogation Monday/Tuesday in Temporal_ef.temporal,
surfaced by this comparison but root-caused as a separate defect (L6).

day/readings verified byte-identical against a build from the branch
tip before this task (v0.10.1's own tag predates an already-landed
bissextile fix that legitimately changed both, so it is not the right
baseline).

671 tests green (dune test); 678 with the exhaustive sweep
(COLITUR_EXHAUSTIVE_SWEEP=1 dune test --force, ~104s).

1 files changed, 5 insertions, 4 deletions

diff --git a/test/test_calendar.ml b/test/test_calendar.ml
index 0d402e6..157841b 100644
--- a/test/test_calendar.ml
+++ b/test/test_calendar.ml
@@ -104,10 +104,11 @@ module Fixture = struct
      the sanctoral side. *)
   let readings ~observed:_ ~temporal:_ ~date:_ ~temporal_at:_ = (None, [])
 
-  (* No fixture here exercises the Creed rubric either -- a rite that has
-     not implemented it returns [false] explicitly, {!Rite.t.creed}'s own
-     documented default. *)
+  (* No fixture here exercises the Creed or Gloria rubrics either -- a rite
+     that has not implemented them returns [false] explicitly,
+     {!Rite.t.creed}/{!Rite.t.gloria}'s own documented default. *)
   let creed ~temporal:_ ~observed:_ ~date:_ = false
+  let gloria ~temporal:_ ~observed:_ ~date:_ = false
 
   let rite : (season, rank) Rite.t =
     { Rite.id = "synthetic-calendar"; vocab; year_start; temporal; anchors = (fun _ -> []);
@@ -119,7 +120,7 @@ module Fixture = struct
       (* Not a Roman rite either, so no bissextile-doubling convention:
          identity, {!Rite.t.fixed_key}'s own documented default. *)
       fixed_key = (fun d -> Some (D.month d, D.day d));
-      rules; season_runs = [ A; B ]; transfer_target; readings; creed }
+      rules; season_runs = [ A; B ]; transfer_target; readings; creed; gloria }
 
   let entry ~month ~day ~slug ~rank =
     { Layer.date = (match Date_spec.fixed ~month ~day with Ok d -> d | Error e -> failwith e);