diff --git a/.loom/published/cart.md b/.loom/published/cart.md
index 46a2d5d..49fc852 100644
--- a/.loom/published/cart.md
+++ b/.loom/published/cart.md
@@ -1,6 +1,6 @@
 # Agreement — the cart
 
-**v0.** Depends on `annotating/v0`.
+**v1.** Depends on `annotating/v0`.
 
 **How two parties work out what something means before one of them changes it.**
 
@@ -104,9 +104,54 @@ already rejected, and the rejection is gone because it lived in an annotation
 that died with the round.
 
 **A decline needs no file of its own.** It is an entry in whatever durable record
-you keep, and **it should say what you believed, not just what you chose** — only
+you keep — **which must outlive the cart**, *and therefore cannot be inside it* — and **it should say what you believed, not just what you chose** — only
 a belief can later be shown wrong.
 
+## The cart is local, and that is what keeps it to two files
+
+**A cart is two developers working side by side.** *Everything else — the wider
+team, the people who need to know, the thing that has to be tracked — is issues,
+chat, whatever you already have.* **This is not that channel and it does not scale
+into one.**
+
+> **So the cart is not committed.** *It lives in the working tree of the machine
+> the two presences share, and `.loom/cart/` is ignored by version control.*
+
+**The reason is not tidiness. A committed cart grows a third file by itself.**
+*The rule above defends against somebody asking for one; **version control does
+not require anybody to ask.*** *Anyone who can clone can add `joe-rose.md`, and
+then `sue-rose.md`, and the agreement's defence — **what happens to this file when
+the person changes?** — is never invoked, because nobody ever had the
+conversation.*
+
+**This is also what makes a round actually end.** *Committed, a cart is gone from
+the tree and permanent in history — **so "gone" means "no longer live" and
+negotiation stays quotable forever.*** **Ignored, gone means gone**, which is what
+the round dying was for.
+
+*The cost, stated: **two presences who do not share a filesystem cannot use a
+cart.*** *That is a real limit and it is the right one — if you need a medium
+between machines, you need the other channel, and reaching for a cart there is
+how it becomes a chat log.*
+
+## What is not yet a decision goes in the write-ahead log
+
+**A round produces things that are neither questions nor decisions:** *something
+observed, something that may turn out to be noise, something you would kick
+yourself for losing and cannot yet justify writing down.*
+
+**`event-log.wal.md`, in the cart.** *Findings, not decisions.* **Nothing in it is
+durable and nothing in it has been decided.**
+
+**At conversion, each entry either becomes an entry in the durable record or is
+discarded.** *Same two exits as a polad, and for the same reason: **conversion is
+when you know most about it.***
+
+> **Write the reason it is not yet an entry.** *An observation you cannot justify
+> promoting is worth keeping; **one you have not said why you are hesitant about
+> will be promoted by whoever finds it, on the strength of it having been written
+> down.***
+
 ## Where a cart lives, and the shelf
 
 **A fixed path, and at most two things in it:**
diff --git a/README.md b/README.md
index f1cf9f7..3576f92 100644
--- a/README.md
+++ b/README.md
@@ -44,3 +44,23 @@ refused nor decided is neither of those.* **Today "out of scope" means "lost."**
 **Adopted by `staribridge/substrate` on 2026-08-21 and reconciled to `v0` the
 same day.** *Read many times, never edited.* **If loom's own copy differs, this
 one is wrong and should be replaced before anybody adopts it.**
+
+---
+
+## `v1` — 2026-09-07
+
+**Three additions. Adopters of `v0` have a reconciliation.**
+
+**The cart is local and not committed**, because a committed cart in a shared
+repository grows a third daily by itself — *the agreement's defence against one
+assumes somebody asks, and version control does not require anybody to ask.* **It
+is also what makes a round actually end:** *committed, "gone" means "no longer
+live"; ignored, gone means gone.*
+
+**The write-ahead log**, for findings that are not yet decisions, transferred to
+the durable record or discarded at conversion. *Invented in practice and load-
+bearing for weeks before it was written down here.*
+
+**The durable record must outlive the cart**, and therefore cannot be inside it.
+*Implied by "durable" and never stated, so an adopter could have cast it to a path
+in `.loom/cart/` and this document would not have told them otherwise.*