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/125.yml

@@ -0,0 +1,47 @@
+# Verified against Divinum Officium (Latin Psalmorum, English translation).
+# Vulgate/Gallican numbering.
+
+number: 125
+verses:
+  - n: 1
+    text:
+      la: "In converténdo Dóminus captivitátem Sion: * facti sumus sicut consoláti:"
+      en: "When the Lord brought back the captivity of Sion, * we became like men comforted."
+    status:
+      la: verified
+      en: verified
+  - n: 2
+    text:
+      la: "Tunc dicent inter gentes: * Magnificávit Dóminus fácere cum eis."
+      en: "Then shall they say among the Gentiles: * The Lord hath done great things for them."
+    status:
+      la: verified
+      en: verified
+  - n: 3
+    text:
+      la: "Magnificávit Dóminus fácere nobíscum: * facti sumus lætántes."
+      en: "The Lord hath done great things for us: * we are become joyful."
+    status:
+      la: verified
+      en: verified
+  - n: 4
+    text:
+      la: "Convérte, Dómine, captivitátem nostram, * sicut torrens in Austro."
+      en: "Turn again our captivity, O Lord, * as a stream in the south."
+    status:
+      la: verified
+      en: verified
+  - n: 5
+    text:
+      la: "Qui séminant in lácrimis, * in exsultatióne metent."
+      en: "They that sow in tears * shall reap in joy."
+    status:
+      la: verified
+      en: verified
+  - n: 6
+    text:
+      la: "Veniéntes autem vénient cum exsultatióne, * portántes manípulos suos."
+      en: "But coming they shall come with joyfulness, * carrying their sheaves."
+    status:
+      la: verified
+      en: verified