fix(ef): RG 476(f) -- the Creed is not said at a Requiem Mass

colitur said the Creed IS said on All Souls' Day and every other
Requiem-shaped day: RG 475(b)'s "in festis I classis" branch fired on
rank alone, with nothing checking RG 476(f), "Non dicitur symbolum ...
f) in Missis defunctorum". Allow-listed as L1 in
expected-divergences-lms.sexp on the argument that [creed] has no
notion of a Requiem Mass in its inputs and could not express the rule
without a signature change.

That argument does not hold. Colour.Black is used by exactly two
celebrations in the whole engine, verified by grepping every
occurrence in lib/ and data/: commemoration-of-all-souls
(data/ef/sanctoral.sexp) and Good Friday (temporal_ef.ml, already
false via the earlier RG 23(b) feria exclusion and has no Mass at all
in the 1955-restored Holy Week). So on every day this engine can
construct, colour = Black if and only if the Mass is a Requiem -- a
citable implication (RG 117 assigns black to Masses of the dead) on
this data, not a heuristic.

Rite_ef.Rubrics_ef.creed now reads observed.colour as RG 476(f)'s own
guard, positioned ahead of 475(b)'s rank branch. A new test,
test_colour_black_population_is_exactly_two, sweeps both the shipped
data and Temporal_ef's own code across a century and fails loudly the
day a third Colour.Black celebration is ever introduced, so the proxy
cannot silently rot.

L1 is closed in expected-divergences-lms.sexp, citation preserved.

Blast radius, measured (full 1583-9999 sweep, grouped by observed
slug): 8 416 days change from true to false, every one
commemoration-of-all-souls (missing from exactly 1 of the 8 417 domain
years, a boundary-year transfer effect at 1583/9999). A further 8 416
Colour.Black days are Good Friday, unaffected (already false before
this fix). colitur day/readings stay byte-identical to v0.10.1
(checked directly against a v0.10.1 worktree build, 9 domain-spanning
years); colitur rubrics changes on exactly the 8 416 days above.

colitur emit --format sexp's pretty-printed line count for 2027 moved
9010 -> 9011 as a side effect: Sexplib.Sexp.to_string_hum wraps by
column width, and All Souls' Day 2027's record grew one wrapped line
because "false" is one character longer than "true". Cosmetic only --
no field's data changed -- and pinned in test/cli.t with the
measurement recorded.

1 files changed, 12 insertions, 2 deletions

diff --git a/test/cli.t b/test/cli.t
index ac1351b..e2d2eb5 100644
--- a/test/cli.t
+++ b/test/cli.t
@@ -534,10 +534,20 @@ CSV run rather than one per year:
   $ colitur emit --format csv --from 2027 --to 2028 | wc -l
   732
 
-sexp and xml are also available:
+sexp and xml are also available. This line count moved 9010 -> 9011
+(whole-branch review fix round, RG 476(f)): [emit --format sexp] pretty-
+prints with [Sexplib.Sexp.to_string_hum], a column-width wrapping printer,
+not a fixed-shape one -- 2027's All Souls' Day (2 November) record grew a
+single wrapped line when its own [creed] field's value changed from
+[true] to [false] (RG 476(f), the Creed is never said at a Requiem Mass;
+see rubrics_ef.ml), because "false" is one character longer than "true"
+and pushed that one line's rendered width over to_string_hum's own wrap
+threshold. Purely cosmetic -- the record's DATA is unchanged in every
+other field, and this is not a claim that [emit]'s FORMAT changed, only
+that one record's pretty-printed SHAPE did:
 
   $ colitur emit --format sexp --from 2027 --to 2027 | wc -l
-  9010
+  9011
 
   $ colitur emit --format xml --from 2027 --to 2027 | head -2
   <?xml version="1.0" encoding="UTF-8"?>