ci: add CodeQL, Semgrep, Gitleaks, Trivy security scanning

.github/workflows/trivy.yml

@@ -0,0 +1,49 @@
+name: Trivy Security Scan
+
+on:
+  push:
+    branches: ['**']
+  pull_request:
+    branches: [main]
+  schedule:
+    - cron: '0 3 * * *'  # Daily at 3 AM UTC
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  security-events: write
+
+jobs:
+  scan:
+    name: Trivy vulnerability scan
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Run Trivy vulnerability scanner (filesystem)
+        uses: aquasecurity/trivy-action@0.34.0
+        with:
+          scan-type: 'fs'
+          scan-ref: '.'
+          format: 'sarif'
+          output: 'trivy-results.sarif'
+          severity: 'CRITICAL,HIGH,MEDIUM'
+          ignore-unfixed: false
+
+      - name: Upload Trivy results to GitHub Security
+        uses: github/codeql-action/upload-sarif@v3
+        if: always()
+        with:
+          sarif_file: 'trivy-results.sarif'
+
+      - name: Run Trivy for npm dependencies
+        uses: aquasecurity/trivy-action@0.34.0
+        with:
+          scan-type: 'fs'
+          scan-ref: '.'
+          scanners: 'vuln'
+          format: 'table'
+          exit-code: 0
+          severity: 'CRITICAL,HIGH'