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booth/persistent-memory.d/2026-09-22-u5-adoption-split-in-two.md
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Vuong Hoang d37b81ab9f memory: snapshot — U5 released at v0.3.0, and the index goes two-tier
The two dated log sections had never been split, so every one of their 29
entries sat inline and the startup index had grown to 372 lines — which is
the cost the two-tier scheme exists to remove, paid on every session that
reads the file. 27 entries were over threshold. All 29 now have a detail
file under persistent-memory.d/ and a one-line index entry that routes
rather than restates. Index: 372 -> 93 lines.

No archival. The soft cap fired, but every entry in this repo is dated
2026-09-21 or later, so the under-14-days guard held all of them back — and
the split alone took the index well under the target without moving
anything out of the active file.

The in-flight section is rewritten for the post-release state: nothing is
in flight, no gate is outstanding, and the next unit is explicitly recorded
as the operator's undecided call rather than as a plan. The session's
recommendation (U4, on three grounds) is written down so it does not have
to be re-derived, alongside the two alternatives and why they are
alternatives.

Two dated predictions are carried forward with their dates and their
instruments: the U5 adoption re-measure on 2026-09-29, which already reads
3 of 24 announced and 2 with a why from peers told nothing, and the
.forever re-count a fortnight AFTER U4 lands, which is U4's own success
criterion and is destroyed by running it early.
2026-09-22 08:20:51 -07:00

24 lines
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Markdown

# U5's adoption prediction split in two
_2026-09-22 · booth_
**U5's adoption prediction, SPLIT IN TWO within an hour of
landing — and the split is the interesting part.** The baseline was recorded as
0 of 26. Fifty minutes after the deploy, `comfy-dev` created `muse-clothed-repro`
and it announced itself: `{handle: comfy-dev, why: "", created: ...}`. That peer
was told nothing. **The HANDLE propagates for free** — it rides on `booth new`
and `booth add`, so every existing CLI caller starts announcing without learning
anything, which is the flags-on-existing-verbs decision paying off on day zero.
**The WHY does not** — it needs someone to know the flag exists, and this first
one is empty.
So re-measure BOTH on **2026-09-29**, because they answer different questions:
find ~/booth-data -maxdepth 2 -name .booth.json | wc -l # free
grep -l '"why": "[^"]' ~/booth-data/*/.booth.json 2>/dev/null | wc -l # learned
A high first count and a near-zero second is the predicted shape of "nobody was
told", and it is the case the operator's no-announcement decision was designed
to be able to see. Do not read the n=1 above as a rate — it is a code-path
observation (every CLI caller writes a handle), not a sample.