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Every temporal id had its Lauds (Benedictus) antiphon authored, but only 3 of 57 had the Vespers (Magnificat) counterpart -- a whole-calendar gap exposed by 2026-08-29's Vespers rendering with no Magnificat antiphon at all. Sourced from the reference engine's static Tempora/ Sancti files, same convention and per-id reference dates already established for the Benedictus antiphons. advent-4 and marian-saturday are the only two ids still missing one (neither resolves from the static files alone) -- follow-up commit. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01ME8QNPdEmHSbSx1r6VmDRG