Replaces the fixed Nocturn 1 = plan / Nocturns 2-3 = patristic slotting
with one ordered pool (scripture plan, winner/commemorations/temporal id,
active octaves) sliced evenly across however many nocturns the day has.
Also makes the bible-plan store dual-keyed so the Dec 25 - Jan 13 stretch
can key off a fixed calendar date alongside the usual (temporalId,
weekday) key. Mechanism only — content authoring is still 2 proof dates.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
will
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