test: add basic python install test

.github/workflows/ci.yml

@@ -30,7 +30,7 @@ jobs:
           node-version: "22"
 
       - name: Set up Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: "3.11"
 
@@ -89,6 +89,40 @@ jobs:
         with:
           path: packages/docs/.vitepress/dist/
 
+  test-python:
+    runs-on: ubuntu-latest
+    needs: build
+    strategy:
+      matrix:
+        python-version: ["3.11", "3.12", "3.13"]
+    steps:
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Download wheel
+        uses: actions/download-artifact@v4
+        with:
+          name: python-dist
+          path: dist/
+
+      - name: Install wheel
+        run: pip install dist/*.whl
+
+      - name: Run tests
+        run: |
+          embedding-atlas --help
+
+          python -c "import embedding_atlas"
+          python -c "from embedding_atlas.projection import compute_text_projection, compute_image_projection, compute_vector_projection"
+
+          pip install jupyterlab anywidget
+          python -c "from embedding_atlas.widget import EmbeddingAtlasWidget"
+
+          pip install streamlit
+          python -c "from embedding_atlas.streamlit import embedding_atlas"
+
   publish-pypi:
     runs-on: ubuntu-latest
     if: github.event_name == 'release'