Add Destructive Command Guard workflow

.github/workflows/destructive-command-guard.yml

@@ -0,0 +1,35 @@
+name: Destructive Command Guard
+
+on:
+  push:
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  scan:
+    name: Scan destructive commands
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Destructive Command Guard
+        shell: bash
+        run: |
+          set -euo pipefail
+          version="v0.4.5"
+          platform="x86_64-unknown-linux-gnu"
+          install_dir="$RUNNER_TEMP/dcg"
+          mkdir -p "$install_dir"
+          curl --fail --location --silent --show-error \
+            "https://github.com/Dicklesworthstone/destructive_command_guard/releases/download/${version}/dcg-${platform}.tar.xz" \
+            --output "$install_dir/dcg.tar.xz"
+          tar -xJf "$install_dir/dcg.tar.xz" -C "$install_dir"
+          chmod +x "$install_dir/dcg"
+          echo "$install_dir" >> "$GITHUB_PATH"
+
+      - name: Run Destructive Command Guard
+        shell: bash
+        run: dcg scan --paths . --fail-on error --format pretty