ci: check dependency changes for vulnerabilities

.github/workflows/dependency-review.yml

@@ -0,0 +1,29 @@
+name: Dependency Review
+
+on:
+  pull_request:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
+  cancel-in-progress: true
+
+jobs:
+  dependency-review:
+    name: Dependency Review
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+
+      - uses: actions/dependency-review-action@a1d282b36b6f3519aa1f3fc636f609c47dddb294 # v5.0.0
+        with:
+          fail-on-severity: low
+          # Test and build dependencies are part of the supply chain too.
+          fail-on-scopes: runtime, development, unknown
+          license-check: false
+          show-openssf-scorecard: false

AGENTS.md

@@ -29,6 +29,8 @@ npm -w @rwdocs/core test        # NAPI tests; not in `make test`, run `make buil
   noticeable bug fixes) to `CHANGELOG.md` following
   `.claude/skills/writing-changelog/SKILL.md`. Skip refactors and lint cleanups.
 - Keep `AGENTS.md` and `README.md` current with what you changed.
+- Keep Dependency Review on every pull request and include development and
+  unknown dependency scopes. Path filters can leave a required check pending.
 
 ## Area rules