Proof content for the new Common-fallback mechanism, live-verified
against Divinum Officium (Monastic Tridentinum 1617): Lauds chapter/
responsory/hymn/versicle ("Jesu coróna célsior"), cross-checked
byte-identical between St. Louis's and St. Nicholas of Tolentino's own
days. Vespers bundle (hymn "Iste Conféssor Dómini sacrátus", reusing
the already-authored Matins hymn translation) sourced via the
reference engine's votive=C5 view instead of a real saint's own Second
Vespers, since every saint in this Common category has their own
Second Vespers permanently outranked by an adjacent fixed feast.
TODO.md records the fuller sourcing detail and the remaining open
Common categories.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HWN869GrMFHqrer9fdCBbF
