Every octave-reading yml's source field held only the Latin
attribution copied verbatim from the breviary text; add the matching
English translation now that the field carries both languages.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01L3wxvz3mPXiHxkPB5JpnmD
will
6fedcd7f2b