diff --git a/README.md b/README.md
index aeb08e6..236bb93 100644
--- a/README.md
+++ b/README.md
@@ -84,7 +84,9 @@ The package includes an install hook that prints the same guidance after install
 
 ### Foundry CLI AUR recovery
 
-The real-actor package PR merge triggers `publish.yml` on main. Missing AUR
+The real-actor package PR merge triggers `publish.yml` on main. Foundry CLI
+publishing compares version and package revision against AUR after cloning;
+equal or older retries are no-ops, and concurrent stale pushes fail without force. Missing AUR
 credentials fail the Foundry CLI publish job. To retry publishing an already
 merged version without touching other packages:
 
diff --git a/scripts/publish-foundry-cli.test.sh b/scripts/publish-foundry-cli.test.sh
new file mode 100755
index 0000000..71f83ba
--- /dev/null
+++ b/scripts/publish-foundry-cli.test.sh
@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+# Exercise real local git pushes; never connect to AUR.
+set -euo pipefail
+repo_root="$(cd "$(dirname "$0")/.." && pwd)"
+tmp="$(mktemp -d)"
+trap 'rm -rf "$tmp"' EXIT
+export REAL_GIT
+REAL_GIT="$(command -v git)"
+mkdir -p "$tmp/bin"
+cat > "$tmp/bin/git" <<'GIT'
+#!/usr/bin/env bash
+set -euo pipefail
+if [[ "$1" == clone ]]; then
+  [[ "$2" == ssh://aur@aur.archlinux.org/foundry-cli-bin.git ]]
+  exec "$REAL_GIT" clone "$FAKE_AUR" "$3"
+fi
+exec "$REAL_GIT" "$@"
+GIT
+chmod +x "$tmp/bin/git"
+export PATH="$tmp/bin:$PATH" AUR_USERNAME=test AUR_EMAIL=test@example.com
+write_package() {
+  local directory="$1" version="$2" revision="$3"
+  mkdir -p "$directory"
+  printf 'pkgver=%s\npkgrel=%s\n' "$version" "$revision" > "$directory/PKGBUILD"
+  printf 'pkgbase = foundry-cli-bin\n\tpkgver = %s\n\tpkgrel = %s\n' "$version" "$revision" > "$directory/.SRCINFO"
+}
+run_case() {
+  local name="$1" version="$2" revision="$3" expected="$4"
+  local work="$tmp/$name"
+  export FAKE_AUR="$work/aur.git"
+  mkdir -p "$work/source/scripts"
+  git init -q --bare --initial-branch=master "$FAKE_AUR"
+  git init -q -b master "$work/seed"
+  write_package "$work/seed" 0.0.56 2
+  git -C "$work/seed" add .
+  git -C "$work/seed" -c user.name=test -c user.email=test@example.com commit -qm initial
+  git -C "$work/seed" push -q "$FAKE_AUR" master
+  local before
+  before="$(git --git-dir="$FAKE_AUR" rev-parse HEAD)"
+  git init -q -b main "$work/source"
+  write_package "$work/source/foundry-cli-bin" "$version" "$revision"
+  git -C "$work/source" add .
+  cp "${PUBLISHER_UNDER_TEST:-$repo_root/scripts/publish-package.sh}" "$work/source/scripts/publish-package.sh"
+  "$work/source/scripts/publish-package.sh" foundry-cli-bin > "$work/output" 2>&1
+  if [[ "$expected" == noop ]]; then
+    [[ "$(git --git-dir="$FAKE_AUR" rev-parse HEAD)" == "$before" ]] || {
+      echo "Publisher changed AUR for $name; expected a no-op" >&2
+      exit 1
+    }
+  else
+    [[ "$(git --git-dir="$FAKE_AUR" rev-parse HEAD)" != "$before" ]]
+    git --git-dir="$FAKE_AUR" show HEAD:.SRCINFO > "$work/published"
+    diff -u "$work/source/foundry-cli-bin/.SRCINFO" "$work/published"
+  fi
+  echo "Passed publish guard: $name"
+}
+run_case older-version 0.0.55 99 noop
+run_case older-revision 0.0.56 1 noop
+run_case equal 0.0.56 2 noop
+run_case forward-version 0.0.57 1 publish
+run_case forward-revision 0.0.56 3 publish
diff --git a/scripts/publish-package.sh b/scripts/publish-package.sh
index f302cef..1d355c0 100755
--- a/scripts/publish-package.sh
+++ b/scripts/publish-package.sh
@@ -20,10 +20,33 @@ trap 'rm -rf "${workdir}"' EXIT
 
 git clone "ssh://aur@aur.archlinux.org/${package_name}.git" "${workdir}/${package_name}"
 
+# A retry can refer to an older main commit than the version already in AUR.
+# Compare after cloning; a concurrent newer push after this point is rejected
+# by the ordinary non-force git push below.
+if [[ "$package_name" == foundry-cli-bin && -f "$workdir/$package_name/.SRCINFO" ]]; then
+  read_release() {
+    local file="$1" version revision
+    version="$(sed -n 's/^[[:space:]]*pkgver = //p' "$file")"
+    revision="$(sed -n 's/^[[:space:]]*pkgrel = //p' "$file")"
+    [[ "$version" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ && "$revision" =~ ^[0-9]+$ ]] || {
+      echo "Invalid Foundry CLI AUR version metadata" >&2
+      return 1
+    }
+    printf '%s-%s\n' "$version" "$revision"
+  }
+  candidate="$(read_release "$repo_root/$package_dir/.SRCINFO")"
+  published="$(read_release "$workdir/$package_name/.SRCINFO")"
+  newest="$(printf '%s\n' "$candidate" "$published" | sort -V | tail -n1)"
+  if [[ "$candidate" == "$published" || "$newest" != "$candidate" ]]; then
+    echo "No AUR changes: Foundry CLI $published is already published; refusing replay of $candidate."
+    exit 0
+  fi
+fi
+
 find "${workdir}/${package_name}" -mindepth 1 -maxdepth 1 ! -name '.git' -exec rm -rf {} +
 
 while IFS= read -r tracked_file; do
-  relative_path="${tracked_file#${package_dir}/}"
+  relative_path="${tracked_file#"${package_dir}"/}"
   install -d "${workdir}/${package_name}/$(dirname "${relative_path}")"
   cp -a "${repo_root}/${tracked_file}" "${workdir}/${package_name}/${relative_path}"
 done < <(git -C "${repo_root}" ls-files -- "${package_dir}")
diff --git a/scripts/validate-packages.sh b/scripts/validate-packages.sh
index ef47191..33ce3ed 100755
--- a/scripts/validate-packages.sh
+++ b/scripts/validate-packages.sh
@@ -34,3 +34,4 @@ bash -n "${repo_root}/scripts/publish-tabex-release.sh"
 
 "${repo_root}/scripts/bump-foundry-cli-release.test.sh"
 "${repo_root}/scripts/validate-foundry-cli-checksum.test.sh"
+"${repo_root}/scripts/publish-foundry-cli.test.sh"