"Vesta is Waystone with exactly one journey whose bounds are ±∞ — and the journal shelf is several such infinite timelines side by side."
The Shelf Dad Already Keeps
Open Day One and you don't find one undifferentiated stream — you find a shelf. Dad keeps a daily journal beside a Quotes journal beside a Twits journal. They're separate books on the same shelf, each holding a different kind of entry. Vesta takes that exact shape: a default journal plus any number of user journals, each an independent collection. This is the one structure Vesta adds on top of the bare date axis, and it's worth being precise about what kind of structure it is.
A journal is categorical. It sorts crumbs by kind — the daily record here, quotes there, ideas in a third — and it says nothing about time. Within every single journal, the date axis is exactly as unbounded as it was before: past scatter and future scatter both work, with no first date and no last. Dad's framing nails it: Vesta is Waystone with one journey whose bounds are plus and minus infinity, and the shelf is several of those infinite timelines standing next to each other.
Why This Doesn't Undo the Divergence
It's fair to worry that adding journals sneaks the container back in. It doesn't, and the reason is the axis of the cut. A journey bounded time — it fenced off a stretch of dates. A journal bounds category — it separates kinds of entry — and leaves time untouched in each one. You can hold ten journals and every one of them still runs from negative infinity to positive infinity. The divergence from Waystone was 'no bounded time container', and a categorical shelf respects that completely: it never puts ends on a timeline; it just lets you keep more than one endless timeline at once.
Identity, Name, and the Modest v0
Each journal has an immutable ULID identity; its name and color are presentation, changeable without touching what the journal is — the same identity-versus-presentation split that governs crumbs. The first version stays deliberately modest: create and rename only. Journal deletion is deferred on purpose, because deleting a journal is deleting a stretch of a lifetime, and the safe path (move the crumbs out, then remove the empty shelf) deserves its own careful design rather than a hasty destructive button. Start with the shelf you can add to and relabel; earn the ability to remove.