refactor: Use native runners for example tests (4 platforms)

Updated test-python-examples.yml to use native runners:
- linux/amd64: ubuntu-latest (Docker build)
- darwin/amd64: macos-13 (native build)
- darwin/arm64: macos-latest (native build)
- windows/amd64: windows-latest (native build)

Removed linux/arm64 from example tests:
- No native ARM64 runner available
- QEMU emulation too slow (30-60 min → 2-4 hours)
- linux/arm64 wheel still built, unit tested, and published to PyPI
- Only example tests skipped (acceptable trade-off)

Benefits:
- True native testing on 4 platforms
- Examples run in parallel (~30-60 min total, not sequential)
- Proper platform-specific validation
- Added Java setup for native builds (macOS/Windows)
- Removed unnecessary QEMU/Docker setup for non-Linux platforms

Author: tae898

.github/workflows/test-python-examples.yml

@@ -14,25 +14,37 @@ on:
 jobs:
   test-examples:
     name: Test Python Examples (${{ matrix.platform }})
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.runs-on }}
     strategy:
       fail-fast: false
       matrix:
-        platform: [linux/amd64, linux/arm64, darwin/amd64, darwin/arm64, windows/amd64]
+        include:
+          - platform: linux/amd64
+            runs-on: ubuntu-latest
+          - platform: darwin/amd64
+            runs-on: macos-13
+          - platform: darwin/arm64
+            runs-on: macos-latest
+          - platform: windows/amd64
+            runs-on: windows-latest
+          # Note: linux/arm64 wheel is built and published but examples not tested
+          # (no native ARM64 runner available, QEMU emulation too slow for 30-60 min examples)
 
     steps:
       - name: Checkout code
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
-      - name: Set up QEMU (for ARM64 emulation)
-        if: contains(matrix.platform, 'arm64')
-        uses: docker/setup-qemu-action@49b3bc8e6bdd4a60e6116a5414239cba5943d3cf # v3.2.0
-        with:
-          platforms: arm64
-
-      - name: Set up Docker Buildx
+      - name: Set up Docker Buildx (Linux only)
+        if: startsWith(matrix.platform, 'linux/')
         uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
 
+      - name: Set up Java (for native builds on macOS/Windows)
+        if: ${{ !startsWith(matrix.platform, 'linux/') }}
+        uses: actions/setup-java@7a6d8a8234af8eb26422e24e3006232cccaa061b # v4.6.0
+        with:
+          distribution: 'temurin'
+          java-version: '21'
+
       - name: Build arcadedb-embedded (${{ matrix.platform }})
         run: |
           cd bindings/python
@@ -44,7 +56,7 @@ jobs:
         with:
           python-version: '3.11'
 
-      # Note: Java is NOT required - arcadedb-embedded has bundled JRE!
+      # Note: Java is NOT required for end users - arcadedb-embedded has bundled JRE!
 
       - name: Install ArcadeDB Python bindings
         run: |
@@ -261,9 +273,11 @@ jobs:
           if [ "${{ needs.test-examples.result }}" = "success" ]; then
             echo "✅ **All platforms passed example testing!**" >> $GITHUB_STEP_SUMMARY
             echo "" >> $GITHUB_STEP_SUMMARY
-            echo "All examples ran successfully across all 5 platforms." >> $GITHUB_STEP_SUMMARY
+            echo "All examples ran successfully across all tested platforms." >> $GITHUB_STEP_SUMMARY
+            echo "" >> $GITHUB_STEP_SUMMARY
+            echo "**Platforms tested**: linux/amd64, darwin/amd64, darwin/arm64, windows/amd64" >> $GITHUB_STEP_SUMMARY
             echo "" >> $GITHUB_STEP_SUMMARY
-            echo "**Platforms tested**: linux/amd64, linux/arm64, darwin/amd64, darwin/arm64, windows/amd64" >> $GITHUB_STEP_SUMMARY
+            echo "**Note**: linux/arm64 wheel is built and published but examples not tested (no native ARM64 runner, QEMU too slow)" >> $GITHUB_STEP_SUMMARY
           else
             echo "❌ **Some platforms failed example testing**" >> $GITHUB_STEP_SUMMARY
             echo "" >> $GITHUB_STEP_SUMMARY