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-thursday.yml

@@ -0,0 +1,64 @@
+# Sourced from Divinum Officium's Monastic block ("[HymnusM Day4 Vespera]",
+# Psalterium/Special/Major Special.txt): five substitutions against the
+# base "[Hymnus Day4 Vespera]" text ("fértili natos aqua" -> "ex aquis
+# ortum genus"; "relínquis" -> "remíttis"; "érigens" -> "írrigans";
+# "répleant" -> "rápiant"; "éfferat" -> "levet"), applied by hand here —
+# not live-query-verified (see TODO.md). English has no separate Monastic
+# variant in the source.
+id: vespers-hymn-thursday
+text:
+  la: |
+    Magnæ Deus poténtiæ,
+    Qui ex aquis ortum genus
+    Partim remíttis gúrgiti,
+    Partim levas in áëra.
+
+    Demérsa lymphis ímprimens,
+    Subvécta cælis írrigans:
+    Ut stirpe ab una pródita,
+    Divérsa rápiant loca:
+
+    Largíre cunctis sérvulis,
+    Quos mundat unda Sánguinis,
+    Nescíre lapsus críminum,
+    Nec ferre mortis tǽdium.
+
+    Ut culpa nullum déprimat:
+    Nullum levet jactántia:
+    Elísa mens ne cóncidat:
+    Eláta mens ne córruat.
+
+    Præsta, Pater piíssime,
+    Patríque compar Únice,
+    Cum Spíritu Paráclito
+    Regnans per omne sǽculum.
+    Amen.
+  en: |
+    O sovereign Lord of nature's might,
+    Who bad'st the water's birth divide;
+    Part in the heavens to take their flight,
+    And part in ocean's deep to hide;
+
+    These low obscured, on airy wing
+    Exalted those, that either race,
+    Though from one element they spring,
+    Might serve thee in a different place.
+
+    Grant, Lord, that we thy servants all,
+    Saved by thy tide of cleansing blood,
+    No more 'neath sin's dominion fall,
+    Nor fear the thought of death's dark flood!
+
+    Thy varied love each spirit bless,
+    The humble cheer, the high control;
+    Check in each heart its proud excess,
+    But raise the meek and contrite soul!
+
+    This boon, O Father, we entreat,
+    This blessing grant, Eternal Son,
+    And Holy Ghost, the Paraclete,
+    Both now, and while the ages run.
+    Amen.
+status:
+  la: draft
+  en: draft