Add daily CodeQL security scanning workflow

.github/workflows/codeql.yml

@@ -0,0 +1,47 @@
+name: CodeQL Security Analysis
+
+on:
+  schedule:
+    # Run daily at 6:00 AM UTC
+    - cron: '0 6 * * *'
+  workflow_dispatch:
+
+permissions:
+  actions: read
+  contents: read
+  security-events: write
+
+jobs:
+  analyze:
+    name: Analyze Code
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        language: ['go', 'javascript']
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v5
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v3
+        with:
+          languages: ${{ matrix.language }}
+          queries: security-and-quality
+
+      - name: Set up Go
+        if: matrix.language == 'go'
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+          cache: true
+
+      - name: Build Go code
+        if: matrix.language == 'go'
+        run: make build
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v3
+        with:
+          category: "/language:${{ matrix.language }}"