ci: add Swift and Kotlin example builds

Author: chipp

.github/workflows/ci.yml

@@ -97,12 +97,26 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: macos-15
-            xcode: "16.0"
-          - os: macos-15
-            xcode: "16.1"
+          - os: macos-26
+            xcode: "26.0.1"
+            developer_dir: /Applications/Xcode_26.0.1.app/Contents/Developer
+          - os: macos-26
+            xcode: "26.1.1"
+            developer_dir: /Applications/Xcode_26.1.1.app/Contents/Developer
+          - os: macos-26
+            xcode: "26.2"
+            developer_dir: /Applications/Xcode_26.2.app/Contents/Developer
+          - os: macos-26
+            xcode: "26.3"
+            developer_dir: /Applications/Xcode_26.3.app/Contents/Developer
+          - os: macos-26
+            xcode: "26.4"
+            developer_dir: /Applications/Xcode_26.4.app/Contents/Developer
+          - os: macos-26
+            xcode: "26.5-beta"
+            developer_dir: /Applications/Xcode_26.5_beta.app/Contents/Developer
     env:
-      DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer
+      DEVELOPER_DIR: ${{ matrix.developer_dir }}
     permissions:
       contents: read
     steps:
@@ -133,6 +147,9 @@ jobs:
         working-directory: swift
         run: xcodebuild test -scheme IDKit -destination "platform=macOS"
 
+      - name: Build Swift sample app
+        run: xcodebuild -project swift/Examples/IDKitSampleApp/IDKitSampleApp.xcodeproj -scheme IDKitSampleApp -destination "generic/platform=iOS Simulator" CODE_SIGNING_ALLOWED=NO build
+
       - name: Cache Swift .build
         if: steps.restore-swift-build.outputs.cache-hit != 'true'
         uses: actions/cache/save@v4
@@ -193,8 +210,7 @@ jobs:
       - name: Free disk space
         run: |
           df -h
-          sudo rm -rf /usr/local/lib/android \
-                      /opt/hostedtoolcache/CodeQL \
+          sudo rm -rf /opt/hostedtoolcache/CodeQL \
                       /usr/share/dotnet \
                       /opt/ghc || true
           sudo apt-get clean
@@ -208,6 +224,12 @@ jobs:
         with:
           toolchain: stable
 
+      - name: Setup Java
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: "17"
+
       - name: Cache Cargo dependencies
         uses: actions/cache@v4
         with:
@@ -226,3 +248,12 @@ jobs:
 
       - name: Build Kotlin bindings (host + Android ABIs)
         run: ./scripts/build-kotlin.sh
+
+      - name: Setup Android SDK
+        uses: android-actions/setup-android@v4
+        with:
+          packages: tools platform-tools platforms;android-35 build-tools;35.0.0
+
+      - name: Build Kotlin sample app
+        working-directory: kotlin/Examples/IDKitSampleApp
+        run: ./gradlew :app:assembleDebug