diff --git a/.github/workflows/pr-lint.yml b/.github/workflows/pr-lint.yml
new file mode 100644
index 00000000..759b37b8
--- /dev/null
+++ b/.github/workflows/pr-lint.yml
@@ -0,0 +1,17 @@
+name: PR Lint
+
+# Conventional Commits on the PR title and every commit on the branch.
+# release-please parses those commit types to decide the version bump and to
+# build the changelog - a non-conventional commit silently produces neither.
+on:
+  pull_request:
+    types: [opened, edited, synchronize, reopened]
+
+permissions:
+  contents: read
+  pull-requests: read
+
+jobs:
+  lint:
+    uses: OneLiteFeatherNET/workflows/.github/workflows/pr-lint.yml@v2.8.1
+    secrets: inherit
diff --git a/.github/workflows/release-please.yml b/.github/workflows/release-please.yml
index 8095d36e..9e1e09a1 100644
--- a/.github/workflows/release-please.yml
+++ b/.github/workflows/release-please.yml
@@ -48,3 +48,31 @@ jobs:
           bomfilename: "build/reports/cyclonedx/bom.xml"
           autocreate: true
           parent: '735737f3-8c00-4123-aa2a-ea6cb62b0b6f'
+
+  sbom:
+    name: Attach SBOM to release
+    needs: release-please
+    if: needs.release-please.outputs.release_created == 'true'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+        with:
+          ref: ${{ needs.release-please.outputs.tag_name }}
+
+      - name: Generate CycloneDX SBOM
+        uses: aquasecurity/trivy-action@v0.36.0
+        with:
+          scan-type: fs
+          scan-ref: .
+          format: cyclonedx
+          output: bom.json
+          exit-code: '0'
+
+      - name: Attach SBOM to the release
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          TAG: ${{ needs.release-please.outputs.tag_name }}
+        run: gh release upload "$TAG" bom.json --clobber
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
new file mode 100644
index 00000000..e2958753
--- /dev/null
+++ b/.github/workflows/security.yml
@@ -0,0 +1,55 @@
+name: Security
+
+# Trivy vulnerability gate plus a CycloneDX SBOM of the repository. Self-contained
+# on purpose: it needs no build tool and no registry credentials, so it is the
+# baseline security gate for every repository regardless of language.
+on:
+  pull_request:
+  push:
+    branches: [main]
+  schedule:
+    - cron: "37 3 * * 1"
+  workflow_dispatch:
+permissions:
+  contents: read
+  security-events: write
+
+jobs:
+  trivy:
+    name: Trivy scan
+    uses: OneLiteFeatherNET/workflows/.github/workflows/security-scan.yml@v2.8.1
+    with:
+      scan-type: "fs"
+      scanners: "vuln,secret"
+      severity: "CRITICAL,HIGH"
+      # Report-only for now, so adopting this does not turn CI red on day one.
+      fail-on-findings: false
+      upload-sarif: true
+    secrets: inherit
+
+  sbom:
+    name: CycloneDX SBOM
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Generate SBOM
+        uses: aquasecurity/trivy-action@v0.36.0
+        with:
+          scan-type: fs
+          scan-ref: .
+          format: cyclonedx
+          output: bom.json
+          # An SBOM is an inventory, not a finding list - never fail on it.
+          exit-code: '0'
+
+      - name: Upload SBOM
+        uses: actions/upload-artifact@v4
+        with:
+          name: sbom-cyclonedx
+          path: bom.json
+          if-no-files-found: error
+          retention-days: 90
diff --git a/commitlint.config.mjs b/commitlint.config.mjs
new file mode 100644
index 00000000..0616fb93
--- /dev/null
+++ b/commitlint.config.mjs
@@ -0,0 +1,3 @@
+export default {
+  extends: ['@commitlint/config-conventional'],
+};
diff --git a/release-please-config.json b/release-please-config.json
index 0d47f158..e0787484 100644
--- a/release-please-config.json
+++ b/release-please-config.json
@@ -10,7 +10,10 @@
       "package-name": "cygnus",
       "changelog-path": "CHANGELOG.md",
       "extra-files": [
-        { "type": "generic", "path": "build.gradle.kts" }
+        {
+          "type": "generic",
+          "path": "build.gradle.kts"
+        }
       ]
     }
   }
diff --git a/renovate.json b/renovate.json
index d5fb3982..607db884 100644
--- a/renovate.json
+++ b/renovate.json
@@ -12,4 +12,4 @@
       "allowedVersions": "<=4.0.0-RC16"
     }
   ]
-}
\ No newline at end of file
+}