[claude] Security Hardening & Quality Gates — Pre-Merge Guards (#149) (#156)

.github/workflows/dependency-audit.yml

@@ -0,0 +1,82 @@
+name: Dependency Audit
+
+on:
+  pull_request:
+    branches: [main]
+    paths:
+      - 'requirements.txt'
+      - 'pyproject.toml'
+      - 'uv.lock'
+  schedule:
+    - cron: '0 8 * * 1'  # Weekly on Monday
+  workflow_dispatch:
+
+permissions:
+  pull-requests: write
+  contents: read
+
+jobs:
+  audit:
+    name: Audit Python dependencies
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: astral-sh/setup-uv@v5
+      - name: Set up Python
+        run: uv python install 3.11
+      - name: Install pip-audit
+        run: uv pip install --system pip-audit
+      - name: Run pip-audit
+        id: audit
+        run: |
+          set -euo pipefail
+          # Run pip-audit against the lock file/requirements
+          if pip-audit --requirement requirements.txt -f json -o /tmp/audit-results.json 2>/tmp/audit-stderr.txt; then
+            echo "found=false" >> "$GITHUB_OUTPUT"
+          else
+            echo "found=true" >> "$GITHUB_OUTPUT"
+            # Check severity
+            CRITICAL=$(python3 -c "
+          import json, sys
+          data = json.load(open('/tmp/audit-results.json'))
+          vulns = data.get('dependencies', [])
+          for d in vulns:
+              for v in d.get('vulns', []):
+                  aliases = v.get('aliases', [])
+                  # Check for critical/high CVSS
+                  if any('CVSS' in str(a) for a in aliases):
+                      print('true')
+                      sys.exit(0)
+          print('false')
+          " 2>/dev/null || echo 'false')
+            echo "critical=${CRITICAL}" >> "$GITHUB_OUTPUT"
+          fi
+        continue-on-error: true
+      - name: Post results comment
+        if: steps.audit.outputs.found == 'true' && github.event_name == 'pull_request'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          BODY="## ⚠️ Dependency Vulnerabilities Detected
+
+          \`pip-audit\` found vulnerable dependencies in this PR. Review and update before merging.
+
+          \`\`\`
+          $(cat /tmp/audit-results.json | python3 -c "
+          import json, sys
+          data = json.load(sys.stdin)
+          for dep in data.get('dependencies', []):
+              for v in dep.get('vulns', []):
+                  print(f\"  {dep['name']}=={dep['version']}: {v['id']} - {v.get('description', '')[:120]}\")
+          " 2>/dev/null || cat /tmp/audit-stderr.txt)
+          \`\`\`
+
+          ---
+          *Automated scan by [dependency-audit](/.github/workflows/dependency-audit.yml)*"
+          gh pr comment "${{ github.event.pull_request.number }}" --body "$BODY"
+      - name: Fail on vulnerabilities
+        if: steps.audit.outputs.found == 'true'
+        run: |
+          echo "::error::Vulnerable dependencies detected. See PR comment for details."
+          cat /tmp/audit-results.json | python3 -m json.tool || true
+          exit 1