5c: report the depth cause from the guards, and make the publish converge

ci.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -euo pipefail
 cd "$(dirname "$0")"
-source ./docker-images.sh
+source ./docker-runner.sh
 
 in_image "$node_image" npm ci
 in_image "$node_image" npm run typecheck
@@ -20,5 +20,9 @@ in_image "$deno_image" deno test --allow-read --no-check src/
 in_image "$bun_image" bun test src/
 
 in_image "$node_image" npm run build
+in_image "$node_image" sh -c 'set -e
+  rm -rf package-tests/node_modules
+  npm pack --pack-destination /tmp >/dev/null
+  npm install --no-save --no-package-lock --prefix package-tests /tmp/*.tgz >/dev/null'
 in_image "$node_image" npx tsc -p package-tests
 in_image "$floor_image" node package-tests/node-floor.js