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Live-verified (Monastic Tridentinum 1617) that an Ember day's Lauds psalmody stays on the plain ferial default throughout -- only the Benedictus antiphon (and, Wednesday/Friday only, the Magnificat antiphon) is genuinely proper to the day. Adds the 6 Benedictus + 4 Magnificat antiphon files (Ember Saturday's Second Vespers is always ceded to the following Sunday on both quarters, so no Magnificat content exists to author there). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AGjUyhUZJaSjiniEmnLdak