propers: transcribe Lauds' fixed and weekday content

Every fixed and weekday-variable text Lauds needs beyond the psalms/
canticles themselves: per-weekday antiphons (data/hours/lauds-
antiphons.yml, reconstructed with an embedded '*' from the engine's
separately-rendered incipit/full lines), the weekday capitulum/
responsory/hymn/versicle bundle (shared verbatim Mon-Fri for the
capitulum, confirmed against the live engine), the fixed Benedictus
text, the Kyrie/Pater-noster short litany, the four Tridentine
suffrages, the conclusio, and the closing versicle.

Saturday's hymn is left honestly `missing`: every ordinary-time
Saturday is either Marian-Sabbato-overridden or falls in a privileged
season whose hymn is itself swapped for the season's own, so there's
no achievable date showing a genuinely per-annum, unprivileged
Saturday Lauds hymn to source it from.

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

src/data/propers/common/lauds-hymn-thursday.yml

@@ -0,0 +1,58 @@
+# Verified against Divinum Officium (Monastic Tridentinum 1617), Lauds live query.
+id: lauds-hymn-thursday
+text:
+  la: |
+    Lux ecce surgit áurea,
+    Pallens facéssat cǽcitas,
+    Quæ nosmet in præceps diu
+    Erróre traxit dévio.
+
+    Hæc lux serénum cónferat,
+    Purósque nos præstet sibi:
+    Nihil loquámur súbdolum:
+    Volvámus obscúrum nihil.
+
+    Sic tota decúrrat dies,
+    Ne lingua mendax, ne manus
+    Oculíve peccent lúbrici,
+    Ne noxa corpus ínquinet.
+
+    Speculátor astat désuper,
+    Qui nos diébus ómnibus,
+    Actúsque nostros próspicit
+    A luce prima in vésperum.
+
+    Deo Patri sit glória,
+    Ejúsque soli Fílio,
+    Cum Spíritu Paráclito,
+    Et nunc, et in perpétuum.
+    Amen.
+  en: |
+    See the golden sun arise!
+    Let no more our darkened eyes
+    Snare us, tangled by surprise
+    In the maze of sin!
+
+    From false words and thoughts impure
+    Let this light, serene and sure,
+    Keep our lips without secure,
+    Keep our souls within.
+
+    So may we the day-time spend,
+    That, till life’s temptations end,
+    Tongue, nor hand, nor eye offend!
+    One, above us all,
+
+    Views in his revealing ray
+    All we do, and think, and say,
+    Watching us from break of day
+    Till the twilight fall.
+
+    Unto God the Father, Son,
+    Holy Spirit, Three in One,
+    One in Three, be glory done,
+    Now and evermore.
+    Amen.
+status:
+  la: verified
+  en: verified