diff --git a/ci.sh b/ci.sh
index 27ae3af..d4609bd 100755
--- a/ci.sh
+++ b/ci.sh
@@ -62,6 +62,13 @@ interrupt_stops_container() {
 
 leg "Ctrl-C stops an in_image container ($node_image)" interrupt_stops_container
 
+# memory.swap.max is 0 when --memory-swap equals --memory.
+container_is_limited() {
+  [ "$(in_image "$node_image" sh -c 'cat /sys/fs/cgroup/memory.max /sys/fs/cgroup/memory.swap.max' | tr '\n' ' ')" = '8589934592 0 ' ]
+}
+
+leg "an in_image container has equal memory and swap limits ($node_image)" container_is_limited
+
 test_log=$(mktemp)
 node_tests() {
   in_image "$node_image" npm test 2>&1 | tee "$test_log"
diff --git a/docker-runner.sh b/docker-runner.sh
index 98c0aa7..8b1b593 100644
--- a/docker-runner.sh
+++ b/docker-runner.sh
@@ -6,11 +6,14 @@ firefox_image=selenium/standalone-firefox:159.0.1
 floor_image=node:18.20.8-alpine3.21
 node_image=node:26.13.0-alpine3.24
 
+# The test legs peak near 4.5g in the container's memory.peak, and a leg building strings near V8's longest fails when the limit is too small.
+container_memory=8g
+
 # --init: the container's process 1 ignores a SIGINT it has no handler for, so without it Ctrl-C leaves the container running.
 in_image() {
   local image=$1 entrypoint=$2
   shift 2
-  docker run --rm --init -u "$(id -u):$(id -g)" -e HOME=/tmp ${PROPERTY_RUNS+-e PROPERTY_RUNS} ${in_image_memory:+--memory "$in_image_memory" --memory-swap "$in_image_memory"} ${in_image_network:+--network "$in_image_network"} -v "$PWD:/app" -w /app --entrypoint "$entrypoint" "$image" "$@"
+  docker run --rm --init -u "$(id -u):$(id -g)" -e HOME=/tmp ${PROPERTY_RUNS+-e PROPERTY_RUNS} --memory "${in_image_memory:-$container_memory}" --memory-swap "${in_image_memory:-$container_memory}" ${in_image_network:+--network "$in_image_network"} -v "$PWD:/app" -w /app --entrypoint "$entrypoint" "$image" "$@"
 }
 
 # Markers on stderr so a captured leg's value stays clean; leg_* because bash scopes local into the leg's own call.
@@ -28,7 +31,7 @@ leg() {
 
 with_firefox() {
   local container in_image_network status=0
-  container=$(docker run -d --rm "$firefox_image") || return $?
+  container=$(docker run -d --rm --memory "$container_memory" --memory-swap "$container_memory" "$firefox_image") || return $?
   # The id is baked in: the trap fires after this function's locals are gone.
   trap "docker rm -f $container >/dev/null 2>&1" EXIT
   trap 'exit 130' INT
diff --git a/docs/reading-cost.md b/docs/reading-cost.md
index 7558e2d..019993f 100644
--- a/docs/reading-cost.md
+++ b/docs/reading-cost.md
@@ -919,3 +919,20 @@ Read most (opens and searches):
 - `src/markdown/parse/markdown-to-adf.test.ts` 2
 - `src/result.test.ts` 2
 - `README.md` 1
+
+## Reading cost, chunk 38c1baab4d5b, finished 2026-11-09T07:42:47Z
+
+87030 new input tokens before the first commit.
+
+Read most (opens and searches):
+
+- `README.md` 7
+- `src/markdown/portable/adf-to-portable-markdown.test.ts` 6
+- `todo.md` 5
+- `src/markdown/portable/task-list.ts` 4
+- `src/result.test.ts` 3
+- `docker-runner.sh` 2
+- `src/conformance/flavour.test.ts` 2
+- `src/markdown/portable/adf-to-portable-markdown.ts` 2
+- `src/result.ts` 2
+- `AGENTS.md` 1
diff --git a/publish.sh b/publish.sh
index ab70462..dff5bf2 100755
--- a/publish.sh
+++ b/publish.sh
@@ -38,7 +38,7 @@ if [ -z "$published" ]; then
   # npmjs shows the README's tagline, which package.json's description is overwritten with here.
   in_image_memory=1g leg "copy the README tagline to the description ($node_image)" in_image "$node_image" node release-tooling/write-description.mjs
   leg "publish $name@$version ($node_image)" \
-    docker run --rm -u "$(id -u):$(id -g)" -e HOME=/tmp -e NPM_TOKEN -v "$PWD:/app" -w /app --entrypoint sh "$node_image" -c \
+    docker run --rm --memory "$container_memory" --memory-swap "$container_memory" -u "$(id -u):$(id -g)" -e HOME=/tmp -e NPM_TOKEN -v "$PWD:/app" -w /app --entrypoint sh "$node_image" -c \
     'printf "//registry.npmjs.org/:_authToken=%s\n" "$NPM_TOKEN" > "$HOME/.npmrc" && npm publish --access public'
 fi
 
diff --git a/todo.md b/todo.md
index 5606a2b..3977c25 100644
--- a/todo.md
+++ b/todo.md
@@ -13,7 +13,6 @@
 | ID | Release | Blocked by | Exempt | Item | L | E | I | R | S | Moves | Score |
 |---|---|---|---|---|---|---|---|---|---|---|---|
 | 153 | 0.4.0 |  | question | **Decide whether `src/markdown/` root may import `emit/`, `parse/` or `portable/`, and hold the answer in `.oxlintrc.json` and §The source parts by ADF and format.** | 1 | 2 | 2 | 3 | 2 | code health by 3 | 26.2 |
-| 144 | 0.4.0 |  |  | **Give every container `docker-runner.sh` and `publish.sh` start a memory limit and an equal swap limit, sized from the largest a gate leg measurably needs.** | 1 | 1 | 1 | 1 | 2 | code health by 1 | 8.7 |
 | 143 | 0.4.0 |  | defect | **Keep, in `adfToPortableMarkdown`, the link around a note, so a linked stored image writes every target.** | 2 | 1 | 3 | 4 | 3 | 7 by 1 | 6.5 |
 | 169 | 0.4.0 |  | owner | **Investigate `kovetskiy/mark` in depth and record in a report how its formats differ from ours, where the two projects overlap and how they compare.** | 1 | 1 | 1 | 1 | 3 | 3 by 4 | 6.3 |
 | 112 | 0.4.0 |  |  | **Pad a GFM pipe table's short rows with empty cells, read its body rows holding no pipe, and read a one-column table without leading pipes in `portableMarkdownToAdf`.** | 2 | 1 | 2 | 3 | 3 | 4 by 4 | 6.2 |
@@ -65,13 +64,6 @@ a paragraph opening with a spellable `!adf:link` (§Nothing recurses unbounded).
 `src/markdown/**` bans only `html/`; banning `emit/`, `parse/` and `portable/` for the root's own
 files, with its `ci.sh` probe, extends the decision.
 
-### 144. Give every container `docker-runner.sh` and `publish.sh` start a memory limit and an equal swap limit, sized from the largest a gate leg measurably needs.
-
-`in_image`, `with_firefox` and `publish.sh` run `docker run` with neither `--memory` nor
-`--memory-swap`, so a runaway leg can starve the machine instead of failing alone. Some tests build
-strings near V8's longest, about 512 MB each, so measure each leg's peak before picking the limit:
-one too small fails the gate.
-
 ### 143. Keep, in `adfToPortableMarkdown`, the link around a note, so a linked stored image writes every target.
 
 `noteLeaves` (`src/markdown/portable/inline-reduction.ts`) drops the node's marks, so a stored