ci: add CodeQL workflow

.github/workflows/codeql.yml

@@ -0,0 +1,43 @@
+name: "CodeQL Advanced"
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+  schedule:
+    - cron: '0 0 * * 0'
+
+jobs:
+  analyze:
+    name: Analyze (${{ matrix.language }})
+    runs-on: ubuntu-latest
+    permissions:
+      security-events: write
+      packages: read
+      actions: read
+      contents: read
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - language: actions
+            build-mode: none
+          - language: rust
+            build-mode: none
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v4
+        with:
+          languages: ${{ matrix.language }}
+          build-mode: ${{ matrix.build-mode }}
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v4
+        with:
+          category: "/language:${{matrix.language}}"

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- CodeQL Advanced workflow (`.github/workflows/codeql.yml`) for static security analysis on push, pull request, and weekly schedule; covers `actions` and `rust` languages (#77)
 - Coverage reporting with `cargo-tarpaulin` and Codecov integration (#42)
 - `codecov.yml` with 80% minimum threshold on `src/services/`, `src/routes/`, `src/repositories/` (#42)
 - Codecov badge in `README.md` (#42)

README.md

@@ -2,6 +2,7 @@
 
 [![Rust CI](https://github.com/nanotaboada/rust-samples-rocket-restful/actions/workflows/rust-ci.yml/badge.svg)](https://github.com/nanotaboada/rust-samples-rocket-restful/actions/workflows/rust-ci.yml)
 [![Rust CD](https://github.com/nanotaboada/rust-samples-rocket-restful/actions/workflows/rust-cd.yml/badge.svg)](https://github.com/nanotaboada/rust-samples-rocket-restful/actions/workflows/rust-cd.yml)
+[![CodeQL Advanced](https://github.com/nanotaboada/rust-samples-rocket-restful/actions/workflows/codeql.yml/badge.svg)](https://github.com/nanotaboada/rust-samples-rocket-restful/actions/workflows/codeql.yml)
 [![codecov](https://codecov.io/gh/nanotaboada/rust-samples-rocket-restful/branch/master/graph/badge.svg)](https://codecov.io/gh/nanotaboada/rust-samples-rocket-restful)
 [![License: MIT](https://img.shields.io/badge/License-MIT-3DA639.svg)](https://opensource.org/licenses/MIT)
 ![Dependabot](https://img.shields.io/badge/Dependabot-contributing-025E8C?logo=dependabot&logoColor=white&labelColor=181818)