feat(render): citations render through Sigla at both call sites

View.citation_ref and readings' part_ref are the only two places a
citation reaches output; every emitter goes through View.

--raw passes Sigla.verbatim rather than a style built over Lang.raw:
an identity name table would still reformat punctuation and renumber.

Loosen reject_sigla_for: --sigla-style/--sigla-book/--sigla-tradition
now actually render on readings/table/render/emit/publish (each
builds its own Sigla.t via the new load_sigla), and stay refused only
on commands that render no citation (day, easter, temporal, ...).

names_of degrades a Lang.bible miss to Book.default_spelling rather
than printing the lookup key itself ("luke.abbr"); pinned in cli.t
against a language file with no [bible] section at all, independent
of la.ini/en.ini's own eventual [bible] section.

Regenerate the 11 golden templates for 2027: every changed line is
one canonical citation replacing a stored variant, verified against
the full readings 2027 diff (raw vs default) cell by cell -- 86
distinct (raw, rendered) pairs account for the entire diff across all
11 files, with zero unexplained residue. Two families: the seven
duplicate book spellings collapsing onto one canonical form (Isa./Isa,
3 Kgs./3 Kings, ...), and citations reconstructed from parsed
structure dropping stray punctuation the parser already treats as
noise (a trailing period or semicolon, a comma chapter/verse
separator, an elided inherited chapter) -- each of the latter already
named and tested in test_citation.ml's parse_suite before this task.

1 files changed, 11 insertions, 3 deletions

diff --git a/lib/render/view.mli b/lib/render/view.mli
index 81bfc26..d271641 100644
--- a/lib/render/view.mli
+++ b/lib/render/view.mli
@@ -16,13 +16,14 @@
 
 val of_days :
   lang:Colitur_naming.Lang.t ->
+  sigla:Colitur_citation.Sigla.t ->
   vocab:('s, 'r) Colitur_kernel.Vocab.t ->
   rite:string ->
   year:int ->
   ('s, 'r) Colitur_kernel.Liturgical_day.t list ->
   Template.value
-(** [of_days ~lang ~vocab ~rite ~year days] where [days] is one civil year,
-    1 January to 31 December, in order. Pure and total.
+(** [of_days ~lang ~sigla ~vocab ~rite ~year days] where [days] is one civil
+    year, 1 January to 31 December, in order. Pure and total.
 
     [lang] resolves every display string -- a day's [name], its localised
     [weekday]/[rank_name]/[colour_name]/[season_name], each month's [name],
@@ -35,4 +36,11 @@ val of_days :
     [slug] is untouched by [lang] -- it stays the stable machine key,
     identical between any two calls that differ only in [lang]. Pass
     {!Colitur_naming.Lang.raw} for the pre-naming behaviour, under which
-    [name] equals [slug] exactly (this is what CLI [--raw] uses). *)
+    [name] equals [slug] exactly (this is what CLI [--raw] uses).
+
+    [sigla] resolves the [first]/[gospel] citation fields (Task 9): each
+    stored reference is passed through {!Colitur_citation.Sigla.format}
+    rather than emitted verbatim. Pass {!Colitur_citation.Sigla.verbatim}
+    alongside {!Colitur_naming.Lang.raw} for [--raw] -- a styled [Sigla.t]
+    built over [Lang.raw] would still parse and reformat every citation,
+    which defeats the byte-exact diffing [--raw] exists for. *)