debug(ci): add verification to diagnose test failures

Adding debug output to check:
- metaspec installation location
- contribute_command signature and parameters
- whether typer.Option metadata is preserved

This will help identify why tests pass locally but fail in CI.

Author: NeilJo-GY

.github/workflows/ci.yml

@@ -29,6 +29,11 @@ jobs:
       run: |
         uv pip install --system -e ".[dev]"
     
+    - name: Verify installation
+      run: |
+        python -c "import metaspec; print('metaspec file:', metaspec.__file__)"
+        python -c "from metaspec.cli.contribute import contribute_command; import inspect; sig = inspect.signature(contribute_command); print('contribute params:', list(sig.parameters.keys())); print('command param:', sig.parameters.get('command'))"
+    
     - name: Run tests
       run: |
         python -m pytest --cov=metaspec --cov-report=xml --cov-report=term