Fix CI: add binary debug test and fix shapely Point serialization in tests

Author: adonm

.github/workflows/release.yml

@@ -82,6 +82,11 @@ jobs:
       - name: Fix binary permissions
         run: chmod +x mlnative/bin/mlnative-render-linux-x64
 
+      - name: Test binary directly
+        run: |
+          echo "Testing binary directly..."
+          echo '{"cmd": "init", "width": 256, "height": 256, "style": "https://tiles.openfreemap.org/styles/liberty", "pixel_ratio": 1.0}' | ./mlnative/bin/mlnative-render-linux-x64 || echo "Binary test failed"
+
       - name: Run smoke test
         run: |
           echo "Testing basic render functionality..."

tests/test_fit_bounds_integration.py

@@ -61,8 +61,10 @@ def test_fit_bounds_two_distant_points_with_pixel_ratio(self):
         sydney = Point(151.2153, -33.8568)  # lon, lat
         london = Point(-0.1246, 51.5007)  # lon, lat
 
-        # Create markers GeoJSON - red circles
-        markers_geojson = feature_collection([sydney, london])
+        # Create markers GeoJSON - red circles (use MultiPoint for multiple points)
+        from shapely import MultiPoint
+
+        markers_geojson = feature_collection(MultiPoint([sydney, london]))
 
         # Create style with markers source
         style = {