ci: add CodeQL workflow with Swift analysis

.github/workflows/codeql.yml

@@ -0,0 +1,67 @@
+name: 'CodeQL'
+
+on:
+    workflow_dispatch:
+    push:
+        branches: [trunk]
+    pull_request:
+        branches: [trunk]
+    schedule:
+        - cron: '0 6 * * 1' # Weekly on Monday at 6am UTC
+
+permissions:
+    security-events: write
+    contents: read
+
+jobs:
+    analyze-interpreted:
+        name: Analyze (${{ matrix.language }})
+        runs-on: ubuntu-latest
+        timeout-minutes: 15
+
+        strategy:
+            fail-fast: false
+            matrix:
+                language: [actions, java-kotlin, javascript-typescript]
+
+        steps:
+            - name: Checkout repository
+              uses: actions/checkout@v4
+
+            - name: Initialize CodeQL
+              uses: github/codeql-action/init@v3
+              with:
+                  languages: ${{ matrix.language }}
+
+            - name: Autobuild
+              uses: github/codeql-action/autobuild@v3
+
+            - name: Perform CodeQL Analysis
+              uses: github/codeql-action/analyze@v3
+              with:
+                  category: '/language:${{ matrix.language }}'
+
+    analyze-swift:
+        name: Analyze (swift)
+        runs-on: macos-15
+        timeout-minutes: 30
+
+        steps:
+            - name: Checkout repository
+              uses: actions/checkout@v4
+
+            - name: Select Xcode
+              run: sudo xcode-select -s /Applications/Xcode_26.0.1.app/Contents/Developer
+
+            - name: Initialize CodeQL
+              uses: github/codeql-action/init@v3
+              with:
+                  languages: swift
+
+            - name: Build Swift package
+              run: swift build --target GutenbergKit --target GutenbergKitHTTP
+
+            - name: Perform CodeQL Analysis
+              uses: github/codeql-action/analyze@v3
+              with:
+                  category: '/language:swift'

ios/Sources/GutenbergKitHTTP/HTTPServer.swift

@@ -626,4 +626,4 @@ extension Logger {
     static let httpServer = Logger(subsystem: "com.gutenbergkit.http", category: "server")
 }
 
-#endif // canImport(Network)
+#endif // canImport(Network)