psalter: add the 27 psalms needed by Terce/Sext/None

Text for every psalm src/data/psalter-distribution.yml's terce/sext/none
tables reference but hadn't been authored yet — the native Gradual set
(119-127) plus the psalms used by the Friday/Saturday redistribution.
Verified Latin/English against Divinum Officium (Monastic Tridentinum
1617).

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

src/data/psalms/127.yml

@@ -0,0 +1,47 @@
+# Verified against Divinum Officium (Latin Psalmorum, English translation).
+# Vulgate/Gallican numbering.
+
+number: 127
+verses:
+  - n: 1
+    text:
+      la: "Beáti, omnes, qui timent Dóminum, * qui ámbulant in viis ejus."
+      en: "Blessed are all they that fear the Lord: * that walk in his ways."
+    status:
+      la: verified
+      en: verified
+  - n: 2
+    text:
+      la: "Labóres mánuum tuárum quia manducábis: * beátus es, et bene tibi erit."
+      en: "For thou shalt eat the labours of thy hands: * blessed art thou, and it shall be well with thee."
+    status:
+      la: verified
+      en: verified
+  - n: 3
+    text:
+      la: "Fílii tui sicut novéllæ olivárum, * in circúitu mensæ tuæ."
+      en: "Thy children as olive plants, * round about thy table."
+    status:
+      la: verified
+      en: verified
+  - n: 4
+    text:
+      la: "Ecce, sic benedicétur homo, * qui timet Dóminum."
+      en: "Behold, thus shall the man be blessed * that feareth the Lord."
+    status:
+      la: verified
+      en: verified
+  - n: 5
+    text:
+      la: "Benedícat tibi Dóminus ex Sion: * et vídeas bona Jerúsalem ómnibus diébus vitæ tuæ."
+      en: "May the Lord bless thee out of Sion: * and mayst thou see the good things of Jerusalem all the days of thy life."
+    status:
+      la: verified
+      en: verified
+  - n: 6
+    text:
+      la: "Et vídeas fílios filiórum tuórum, * pacem super Israël."
+      en: "And mayst thou see thy children’s children, * peace upon Israel."
+    status:
+      la: verified
+      en: verified