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booth/persistent-memory.d/2026-09-21-u2-marks-landed.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

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Markdown

# U2 (marks) landed — one primitive for three mechanisms
_2026-09-21 · booth_
**U2 (marks) landed.** One primitive replacing three
mechanisms. `pick` / `note` / `flag` in one `.marks.json` per booth, one read
path (`marks_for`), one openness predicate (`open_marks`), rendered beside the
artifact on the tile, at full size in the zoom, and in the panel. `flag` and
`note` had no write path at all before this — the selection loop
(`golden-candidates`, `sindra-finalists`, the `pancake-*` ladders) was running
through chat. 242 tests. Details worth carrying: `asks.py` kept `normalize_ask`
and gained `build_answer` (the 2026-09-09 partial-answer semantics preserved by
moving, not rewriting) and LOST its five sidecar-storage functions;
`GET /b/<n>/marks.json` was added because remote sessions polled
`<stem>.answer.json` over HTTP and the sidecar's removal would have taken that
capability with it; `/b/<n>/asks` 308s to `/marks`.