diff --git a/.github/workflows/edge.yml b/.github/workflows/edge.yml
index 8832e31..a56ac28 100644
--- a/.github/workflows/edge.yml
+++ b/.github/workflows/edge.yml
@@ -46,8 +46,24 @@ jobs:
             fi
             if gh release create edge dist/* --prerelease --target "$GITHUB_SHA" --title "dev-main" \
               --notes "Built from main at $GITHUB_SHA. Not a release: install a version for production use."; then
-              exit 0
+              published=1
+              break
             fi
             sleep 20
           done
-          exit 1
+          test -n "${published:-}"
+      # gh reuses an existing tag and ignores --target: when the old tag could not be deleted (a tag ruleset refuses it,
+      # "Cannot delete this tag" above), the release is published on the old commit and nothing else fails.
+      - name: Check that the edge tag moved to this commit
+        env:
+          GH_TOKEN: ${{ github.token }}
+          GH_REPO: ${{ github.repository }}
+        run: |
+          for _ in 1 2 3; do
+            tagged=$(gh api "repos/$GH_REPO/commits/edge" --jq .sha) && break
+            sleep 20
+          done
+          if [ "${tagged:-}" != "$GITHUB_SHA" ]; then
+            echo "::error::The edge tag points to ${tagged:-an unreadable commit}, not $GITHUB_SHA: exclude refs/tags/edge from the repository's tag ruleset."
+            exit 1
+          fi
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b04734e..7d1e6af 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,13 @@ phpgraph follows [semantic versioning](https://semver.org) from 1.0.0; what stay
   the files a build reuses. Docker image, 12-thread laptop: Sylius 28 → 10 s, Akeneo 26 → 17 s; with the cache of
   the previous build, Sylius 14 → 8 s. Peak memory +12 to +20 % with workers, −4 to −28 % without.
 
+## 1.6.1 (2026-10-30)
+
+### Fixed
+- A call to a configuration helper with the string `"param"` among its arguments was taken for a call depending on
+  its caller's parameters, so it was never evaluated and the services it declares were missing. The rest of 1.6.1 is
+  internal (the AGENTS.md rules applied to `src/`): every graph of the corpus is identical to 1.6.0's.
+
 ## 1.6.0 (2026-10-30)
 
 ### Added