fix: optin oncomplete, assertions, method returns

.github/workflows/cd.yaml

@@ -71,9 +71,6 @@ jobs:
       - name: Install poetry
         run: pipx install poetry
 
-      - name: Install hatch
-        run: pipx install hatch
-
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
@@ -114,7 +111,7 @@ jobs:
         if: inputs.stubs_wheel
         run: |
             pushd stubs
-            hatch build -t wheel
+            poetry build --format wheel
             popd
 
       - uses: actions/upload-artifact@v4 # upload artifacts so they are retained on the job

.github/workflows/check-python.yaml

@@ -14,9 +14,6 @@ jobs:
       - name: Install poetry
         run: pipx install poetry
 
-      - name: Install hatch
-        run: pipx install hatch
-
       - name: Set up Python 3.12
         uses: actions/setup-python@v5
         with:
@@ -47,7 +44,7 @@ jobs:
 
           # build stubs
           pushd stubs
-          hatch build -t wheel
+          poetry build --format wheel
           popd
 
           # build compiler