Build the Vespers ordo: mechanism, weekday content, seasonal content

Wires resolveOrdo('vespers', ...) end to end: opening versicle,
weekday psalmody (4 groups, handling the joined Ps 115+116 and the
split Ps 138/143 via a PsalmRef-like shape), the chapter/responsory/
hymn/versicle office bundle, Magnificat, day-collects — reusing
resolveEveningDay so First/Second Vespers precedence and the cross-day
commemoration (both added in the previous commit) apply automatically
— and a closing that reuses Lauds' own conclusio, since no distinct
"Vespera" version of that exact text turned up in the source.

getMagnificatAntiphon mirrors getBenedictusAntiphon's saint/temporal-id
lookup order, but also falls back to real content Benedictus has no
equivalent of: the classic ferial set that quotes the Magnificat's own
text in sequence across the week, with the correct Monastic-rubric
variant picked for Tue/Thu/Fri/Sat (two of those needed a fresh
translation where the Monastic Latin diverges from the given English
in content, not just wording).

Also includes Vespers' own seasonal content (Advent/Lent/Passiontide/
Paschaltide chapter+responsory+hymn+versicle), transcribed from the
same source blocks as the weekday content, with the Monastic-specific
hymn variants hand-applied from the source's substitution notation
against each base Roman text (one transcription slip caught and fixed
mid-pass: the Passiontide hymn's closing lines had been copied from
the Roman text instead of the Monastic one actually being
transcribed). Passiontide's own responsory/hymn correctly omit the
Gloria Patri, matching real rubric and the source data as given.

All weekday/seasonal content marked `draft`, not `verified` — read
directly from the reference source, not cross-checked against a live
rendering per day the way the psalmody was.

Six other hours' resolvePart switches needed the three new HourPart
kinds ('vespers-psalmody', 'vespers-office', 'magnificat') added to
their exhaustive not-used lists so they still typecheck; three
pre-existing tests assumed Vespers was still "coming soon" and are
updated to exercise Matins (still the genuine stub) instead.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/data/propers/common/vespers-hymn-monday.yml

@@ -0,0 +1,62 @@
+# Sourced from Divinum Officium's Monastic block ("[HymnusM Day1 Vespera]",
+# Psalterium/Special/Major Special.txt): two word substitutions against the
+# base "[Hymnus Day1 Vespera]" text ("adáugeat" -> "invéniat"; "Hæc" ->
+# "Ut", in the 4th stanza), applied by hand here — not live-query-verified
+# (see TODO.md). English has no separate Monastic variant in the source.
+id: vespers-hymn-monday
+text:
+  la: |
+    Imménse cæli Cónditor,
+    Qui mixta ne confúnderent,
+    Aquæ fluénta dívidens,
+    Cælum dedísti límitem.
+
+    Firmans locum cæléstibus,
+    Simúlque terræ rívulis;
+    Ut unda flammas témperet,
+    Terræ solum ne díssipent.
+
+    Infúnde nunc, piíssime,
+    Donum perénnis grátiæ:
+    Fraudis novæ ne cásibus
+    Nos error átterat vetus.
+
+    Lucem fides invéniat:
+    Sic lúminis jubar ferat:
+    Ut vana cuncta próterat:
+    Hanc falsa nulla cómprimant.
+
+    Præsta, Pater piíssime,
+    Patríque compar Únice,
+    Cum Spíritu Paráclito
+    Regnans per omne sǽculum.
+    Amen.
+  en: |
+    O great Creator of the sky,
+    Who wouldest not the floods on high
+    With earthly waters to confound,
+    But mad'st the firmament their bound;
+
+    The floods above thou didst ordain;
+    The floods below thou didst restrain:
+    That moisture might attemper heat,
+    Lest the parched earth should ruin meet.
+
+    Upon our souls, good Lord, bestow
+    Thy gift of grace in endless flow:
+    Lest some renewed deceit or wile
+    Of former sin should us beguile.
+
+    Let faith discover heav'nly light;
+    So shall its rays direct us right:
+    And let this faith each error chase,
+    And never give to falsehood place.
+
+    Grant this, O Father, ever One
+    With Christ, thy sole-begotten Son,
+    And Holy Ghost, whom all adore,
+    Reigning and blest forevermore.
+    Amen.
+status:
+  la: draft
+  en: draft