docs: strengthen public security signals

.github/workflows/codeql.yml

@@ -0,0 +1,52 @@
+name: CodeQL
+
+on:
+  push:
+    branches: [main, dev]
+  pull_request:
+    branches: [main, dev]
+  schedule:
+    - cron: '17 3 * * 1'
+
+permissions:
+  contents: read
+  security-events: write
+
+jobs:
+  analyze:
+    name: Analyze (${{ matrix.language }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - language: go
+            build-mode: manual
+          - language: actions
+            build-mode: none
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4
+
+      - name: Set up Go
+        if: matrix.language == 'go'
+        uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v5
+        with:
+          go-version: "1.24.6"
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v4
+        with:
+          languages: ${{ matrix.language }}
+          build-mode: ${{ matrix.build-mode }}
+          queries: security-extended
+
+      - name: Build for CodeQL
+        if: matrix.build-mode == 'manual'
+        run: make build
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v4
+        with:
+          category: "/language:${{ matrix.language }}"