feat(templates): wall calendar grid in LaTeX, groff and HTML

Three flavours, not six: a month grid in Markdown or plain text is a
worse artefact than the booklet already is, and shipping a template we
would not use ourselves is maintenance with no reader.

These are the first templates to use weeks and in_month, so this is
where the view model earns its keep -- the booklet and the grid come
from one model with no second code path.

Every cell carries a per-cell 'last' boolean (already in the view). A
table row needs a separator BETWEEN cells and the engine deliberately
has no 'unless last' construct; the rule is shape the data, not the
template. Without it the LaTeX grid emits eight columns for seven
cells and pdflatex rejects the file.

Day cells resolve their label as {{#name}}{{la}}{{^la}}{{slug}}{{/la}}
{{/name}}, never a bare {{name.la}}: the enclosing month object has
its own name.la, and the engine's scope lookup falls back outward, so
a bare dotted lookup would render the month's own Latin name on every
day lacking one -- a wall calendar where every day reads "January".
Verified on the goldens: Ianuarius appears exactly once per file, the
month heading, never as a day label.

1 files changed, 186 insertions, 0 deletions

diff --git a/test/golden/grid-2027.ms b/test/golden/grid-2027.ms
new file mode 100644
index 0000000..785d59a
--- /dev/null
+++ b/test/golden/grid-2027.ms
@@ -0,0 +1,186 @@
+.\" colitur wall calendar -- groff ms with tbl. flavour: groff
+.\" Build: colitur table --year 2027 --template grid.ms | groff -ms -t -Tpdf > grid.pdf
+.\"
+.\" Day label falls back to the slug when the day carries no Latin name (most
+.\" temporal days, and most sanctoral entries, which are Latin-less in the
+.\" shipped data) -- see ordo.tex's own comment for why the fallback is
+.\" written as a name-section wrapping a plain var and its inverse, rather
+.\" than a single dotted lookup and its inverse.
+.\"
+.\" Every cell also carries a last flag, true on the seventh of its row: tbl
+.\" needs the tab separator BETWEEN columns, not after the last one, and the
+.\" engine has no unless-last construct, so the flag comes from data.
+.TL
+Calendarium 2027 \(bu ef
+
+.SH
+Ianuarius
+.TS
+allbox;
+c c c c c c c
+l l l l l l l.
+Dom	Lun	Mar	Mer	Iov	Ven	Sab
+					1 ef-circumcision	2 Officium sanctae Mariae in sabbato
+3 Sanctissimi Nominis Iesu	4 ef-christmas-1-monday	5 ef-christmas-1-tuesday	6 ef-epiphany	7 ef-christmas-2-thursday	8 ef-christmas-2-friday	9 Officium sanctae Mariae in sabbato
+10 Sanctae Familiae Iesu, Mariae, Ioseph	11 ef-time-after-epiphany-1-monday	12 ef-time-after-epiphany-1-tuesday	13 commemoration-of-the-baptism-of-the-lord	14 hilary	15 paul-the-first-hermit	16 marcellus-i
+17 ef-time-after-epiphany-sunday-2	18 ef-time-after-epiphany-2-monday	19 ef-time-after-epiphany-2-tuesday	20 sts-fabian-sebastian	21 agnes	22 sts-vincent-anastasius	23 raymond-of-pe-afort
+24 ef-septuagesima-sunday-1	25 conversion-of-st-paul	26 polycarp	27 john-chrysostom	28 peter-nolasco	29 francis-de-sales	30 martina
+31 ef-septuagesima-sunday-2						
+.TE
+
+.SH
+Februarius
+.TS
+allbox;
+c c c c c c c
+l l l l l l l.
+Dom	Lun	Mar	Mer	Iov	Ven	Sab
+	1 ignatius-of-antioch	2 purification-of-the-blessed-virgin-mary	3 ef-septuagesima-2-wednesday	4 andrew-corsini	5 agatha	6 titus
+7 ef-septuagesima-sunday-3	8 john-of-matha	9 cyril-of-alexandria	10 ef-ash-wednesday	11 ef-lent-after-ashes-thursday	12 ef-lent-after-ashes-friday	13 ef-lent-after-ashes-saturday
+14 ef-lent-sunday-1	15 ef-lent-1-monday	16 ef-lent-1-tuesday	17 ef-lent-ember-wed	18 ef-lent-1-thursday	19 ef-lent-ember-fri	20 ef-lent-ember-sat
+21 ef-lent-sunday-2	22 chair-of-st-peter	23 ef-lent-2-tuesday	24 matthias	25 ef-lent-2-thursday	26 ef-lent-2-friday	27 ef-lent-2-saturday
+28 ef-lent-sunday-3						
+.TE
+
+.SH
+Martius
+.TS
+allbox;
+c c c c c c c
+l l l l l l l.
+Dom	Lun	Mar	Mer	Iov	Ven	Sab
+	1 ef-lent-3-monday	2 ef-lent-3-tuesday	3 ef-lent-3-wednesday	4 ef-lent-3-thursday	5 ef-lent-3-friday	6 ef-lent-3-saturday
+7 ef-lent-sunday-4	8 ef-lent-4-monday	9 ef-lent-4-tuesday	10 ef-lent-4-wednesday	11 ef-lent-4-thursday	12 ef-lent-4-friday	13 ef-lent-4-saturday
+14 ef-passion-sunday	15 ef-passiontide-1-monday	16 ef-passiontide-1-tuesday	17 ef-passiontide-1-wednesday	18 ef-passiontide-1-thursday	19 joseph-spouse-of-the-bl-virgin-mary	20 ef-passiontide-1-saturday
+21 ef-palm-sunday	22 ef-passiontide-2-monday	23 ef-passiontide-2-tuesday	24 ef-passiontide-2-wednesday	25 Feria V in Cena Domini	26 Feria VI in Passione et Morte Domini	27 Sabbato sancto
+28 ef-easter-sunday	29 ef-easter-1-monday	30 ef-easter-1-tuesday	31 ef-easter-1-wednesday			
+.TE
+
+.SH
+Aprilis
+.TS
+allbox;
+c c c c c c c
+l l l l l l l.
+Dom	Lun	Mar	Mer	Iov	Ven	Sab
+				1 ef-easter-1-thursday	2 ef-easter-1-friday	3 ef-easter-1-saturday
+4 ef-low-sunday	5 annunciation-of-the-blessed-virgin-mary	6 ef-easter-2-tuesday	7 ef-easter-2-wednesday	8 ef-easter-2-thursday	9 ef-easter-2-friday	10 Officium sanctae Mariae in sabbato
+11 ef-easter-sunday-3	12 ef-easter-3-monday	13 hermenegild	14 justin	15 ef-easter-3-thursday	16 ef-easter-3-friday	17 Officium sanctae Mariae in sabbato
+18 ef-easter-sunday-4	19 ef-easter-4-monday	20 ef-easter-4-tuesday	21 anselm	22 sts-soter-caius	23 ef-easter-4-friday	24 fidelis-of-sigmaringen
+25 ef-easter-sunday-5	26 sts-cletus-marcellinus	27 peter-canisius	28 paul-of-the-cross	29 peter-of-verona	30 catherine-of-siena	
+.TE
+
+.SH
+Maius
+.TS
+allbox;
+c c c c c c c
+l l l l l l l.
+Dom	Lun	Mar	Mer	Iov	Ven	Sab
+						1 joseph-the-workman
+2 ef-easter-sunday-6	3 ef-rogation-monday	4 monica	5 ef-ascension-vigil	6 ef-ascension	7 stanislaus	8 Officium sanctae Mariae in sabbato
+9 ef-easter-sunday-7	10 antoninus	11 sts-philip-james	12 sts-nereus-achilleus-domitilla-pancras	13 robert-bellarmine	14 ef-easter-7-friday	15 ef-pentecost-vigil
+16 ef-pentecost	17 ef-easter-8-monday	18 ef-easter-8-tuesday	19 ef-pentecost-ember-wed	20 ef-easter-8-thursday	21 ef-pentecost-ember-fri	22 ef-pentecost-ember-sat
+23 ef-trinity	24 ef-time-after-pentecost-1-monday	25 gregory-vii	26 philip-neri	27 ef-corpus-christi	28 augustine-of-canterbury	29 mary-magdalene-de-pazzi
+30 ef-time-after-pentecost-sunday-2	31 queenship-of-the-blessed-virgin-mary					
+.TE
+
+.SH
+Iunius
+.TS
+allbox;
+c c c c c c c
+l l l l l l l.
+Dom	Lun	Mar	Mer	Iov	Ven	Sab
+		1 angela-merici	2 ef-time-after-pentecost-2-wednesday	3 ef-time-after-pentecost-2-thursday	4 ef-sacred-heart	5 boniface
+6 ef-time-after-pentecost-sunday-3	7 ef-time-after-pentecost-3-monday	8 ef-time-after-pentecost-3-tuesday	9 ef-time-after-pentecost-3-wednesday	10 margaret-of-scotland	11 barnabas	12 john-of-san-fecundo
+13 ef-time-after-pentecost-sunday-4	14 basil-the-great	15 ef-time-after-pentecost-4-tuesday	16 ef-time-after-pentecost-4-wednesday	17 gregory-barbarigo	18 ephrem-of-syria	19 julia-of-falconieri
+20 ef-time-after-pentecost-sunday-5	21 aloysius-gongzaga	22 paulinus-of-nola	23 vigil-of-the-nativity-of-st-john-the-baptist	24 nativity-of-st-john-the-baptist	25 william	26 sts-john-paul
+27 ef-time-after-pentecost-sunday-6	28 vigil-of-sts-peter-paul	29 sts-peter-paul	30 in-commemoratione-sancti-pauli-apostoli			
+.TE
+
+.SH
+Iulius
+.TS
+allbox;
+c c c c c c c
+l l l l l l l.
+Dom	Lun	Mar	Mer	Iov	Ven	Sab
+				1 precious-blood-of-our-lord-jesus-christ	2 visitation-of-the-blessed-virgin-mary	3 irenaeus
+4 ef-time-after-pentecost-sunday-7	5 anthony-mary-zaccariah	6 ef-time-after-pentecost-7-tuesday	7 sts-cyril-methodius	8 elizabeth-of-portugal	9 ef-time-after-pentecost-7-friday	10 seven-holy-brothers-and-sts-rufina-secunda
+11 ef-time-after-pentecost-sunday-8	12 john-gualbert	13 ef-time-after-pentecost-8-tuesday	14 bonaventure	15 henry-the-emperor	16 ef-time-after-pentecost-8-friday	17 Officium sanctae Mariae in sabbato
+18 ef-time-after-pentecost-sunday-9	19 vincent-de-paul	20 jerome-emiliani	21 laurence-of-brindisi	22 mary-magdalene	23 apollinaris	24 Officium sanctae Mariae in sabbato
+25 ef-time-after-pentecost-sunday-10	26 anne-mother-of-the-blessed-virgin	27 ef-time-after-pentecost-10-tuesday	28 sts-nazarius-celsus-st-victor-i-st-innocent-i	29 martha	30 ef-time-after-pentecost-10-friday	31 ignatius-loyola
+.TE
+
+.SH
+Augustus
+.TS
+allbox;
+c c c c c c c
+l l l l l l l.
+Dom	Lun	Mar	Mer	Iov	Ven	Sab
+1 ef-time-after-pentecost-sunday-11	2 alphonsus-liguori	3 ef-time-after-pentecost-11-tuesday	4 dominic	5 dedication-of-the-basilica-of-st-mary-major	6 transfiguration-of-our-lord	7 cajetan
+8 ef-time-after-pentecost-sunday-12	9 vigil-of-st-lawrence	10 lawrence	11 ef-time-after-pentecost-12-wednesday	12 clare	13 ef-time-after-pentecost-12-friday	14 vigil-of-the-assumption
+15 assumption-of-the-blessed-virgin-mary	16 joachim-father-of-the-blessed-virgin	17 hyacinth	18 ef-time-after-pentecost-13-wednesday	19 john-eudes	20 bernard-of-clairvaux	21 jane-frances-de-chantal
+22 ef-time-after-pentecost-sunday-14	23 philip-benizi	24 bartholomew	25 louis-ix	26 ef-time-after-pentecost-14-thursday	27 joseph-calasance	28 augustine
+29 ef-time-after-pentecost-sunday-15	30 rose-of-lima	31 raymond-nonnatus				
+.TE
+
+.SH
+September
+.TS
+allbox;
+c c c c c c c
+l l l l l l l.
+Dom	Lun	Mar	Mer	Iov	Ven	Sab
+			1 ef-time-after-pentecost-15-wednesday	2 stephen-of-hungary	3 pius-x	4 Officium sanctae Mariae in sabbato
+5 ef-time-after-pentecost-sunday-16	6 ef-time-after-pentecost-16-monday	7 ef-time-after-pentecost-16-tuesday	8 nativity-of-the-blessed-virgin-mary	9 ef-time-after-pentecost-16-thursday	10 nicholas-of-tolentino	11 Officium sanctae Mariae in sabbato
+12 ef-time-after-pentecost-sunday-17	13 ef-time-after-pentecost-17-monday	14 exaltation-of-the-holy-cross	15 seven-sorrows-of-the-blessed-virgin-mary	16 sts-cornelius-cyprian	17 ef-time-after-pentecost-17-friday	18 joseph-of-cupertino
+19 ef-time-after-pentecost-sunday-18	20 ef-time-after-pentecost-18-monday	21 matthew	22 ef-september-ember-wed	23 linus	24 ef-september-ember-fri	25 ef-september-ember-sat
+26 ef-time-after-pentecost-sunday-19	27 sts-cosmas-damian	28 wenceslaus	29 dedication-of-st-michael-the-archangel	30 jerome		
+.TE
+
+.SH
+October
+.TS
+allbox;
+c c c c c c c
+l l l l l l l.
+Dom	Lun	Mar	Mer	Iov	Ven	Sab
+					1 ef-time-after-pentecost-19-friday	2 holy-guardian-angels
+3 ef-time-after-pentecost-sunday-20	4 francis-of-assisi	5 ef-time-after-pentecost-20-tuesday	6 bruno	7 our-lady-of-the-rosary	8 bridget-of-sweden	9 john-leonardi
+10 ef-time-after-pentecost-sunday-21	11 maternity-of-the-blessed-virgin-mary	12 ef-time-after-pentecost-21-tuesday	13 edward	14 callistus-i	15 teresa-of-avila	16 hedwig
+17 ef-time-after-pentecost-sunday-22	18 luke-the-evangelist	19 peter-of-alcantara	20 john-cantius	21 ef-time-after-pentecost-22-thursday	22 ef-time-after-pentecost-22-friday	23 anthony-mary-claret
+24 ef-time-after-pentecost-sunday-23	25 ef-time-after-pentecost-23-monday	26 ef-time-after-pentecost-23-tuesday	27 ef-time-after-pentecost-23-wednesday	28 sts-simon-jude	29 ef-time-after-pentecost-23-friday	30 Officium sanctae Mariae in sabbato
+31 ef-christ-the-king						
+.TE
+
+.SH
+November
+.TS
+allbox;
+c c c c c c c
+l l l l l l l.
+Dom	Lun	Mar	Mer	Iov	Ven	Sab
+	1 all-saints	2 commemoration-of-all-souls	3 ef-time-after-pentecost-24-wednesday	4 charles-borromeo	5 ef-time-after-pentecost-24-friday	6 Officium sanctae Mariae in sabbato
+7 ef-time-after-epiphany-sunday-5	8 ef-time-after-pentecost-25-monday	9 dedication-of-the-archbasilica-of-our-holy-savior	10 andrew-avellino	11 martin-of-tours	12 martin-i	13 didacus
+14 ef-time-after-epiphany-sunday-6	15 albert-the-great	16 gertrude-the-great	17 gregory-the-wonderworker	18 dedication-of-the-basilicas-of-sts-peter-paul	19 elizabeth-of-hungary	20 felix-of-valois
+21 ef-time-after-pentecost-sunday-24	22 cecilia	23 clement-i	24 john-of-the-cross	25 catherine-of-alexandria	26 sylvester	27 Officium sanctae Mariae in sabbato
+28 ef-advent-sunday-1	29 ef-advent-1-monday	30 andrew				
+.TE
+
+.SH
+December
+.TS
+allbox;
+c c c c c c c
+l l l l l l l.
+Dom	Lun	Mar	Mer	Iov	Ven	Sab
+			1 ef-advent-1-wednesday	2 vivian	3 francis-xavier	4 peter-chrysologus
+5 ef-advent-sunday-2	6 nicholas	7 ambrose	8 immaculate-conception-of-the-blessed-virgin-mary	9 ef-advent-2-thursday	10 ef-advent-2-friday	11 damasus-i
+12 ef-advent-sunday-3	13 lucy	14 ef-advent-3-tuesday	15 ef-advent-ember-wed	16 eusebius	17 ef-advent-ember-fri	18 ef-advent-ember-sat
+19 ef-advent-sunday-4	20 ef-advent-4-monday	21 thomas	22 ef-advent-4-wednesday	23 ef-advent-4-thursday	24 ef-nativity-vigil	25 ef-nativity
+26 ef-christmas-sunday-0	27 john-the-evangelist	28 holy-innocents	29 ef-nativity-octave-day-5	30 ef-nativity-octave-day-6	31 ef-nativity-octave-day-7	
+.TE
+