fix(ci): patch CI=true env in non-strict tests, add st.write mock

- test_core.py: 4 tests that expect non-strict error handling now patch
  CI="" to prevent auto-strict mode activation in GitHub Actions
- test_dashboard.py: add missing st.write to MockStreamlit

Author: morganrcu

tests/test_core.py

@@ -106,6 +106,7 @@ def mock_single_control_policy():
         os.unlink(path)
 
 
+@patch.dict(os.environ, {"CI": "", "VENTURALITICA_STRICT": ""})
 def test_compute_and_evaluate_value_error(mock_single_control_policy):
     validator = AssuranceValidator(mock_single_control_policy)
     from venturalitica.metrics import METRIC_REGISTRY
@@ -118,6 +119,7 @@ def test_compute_and_evaluate_value_error(mock_single_control_policy):
         assert results == []
 
 
+@patch.dict(os.environ, {"CI": "", "VENTURALITICA_STRICT": ""})
 def test_compute_and_evaluate_unexpected_error(mock_single_control_policy, capsys):
     validator = AssuranceValidator(mock_single_control_policy)
     from venturalitica.metrics import METRIC_REGISTRY
@@ -185,6 +187,7 @@ def test_compute_and_evaluate_invalid_data():
         v.compute_and_evaluate("not a dataframe", {})
 
 
+@patch.dict(os.environ, {"CI": "", "VENTURALITICA_STRICT": ""})
 def test_unknown_metric(mock_policy_file):
     validator = AssuranceValidator(mock_policy_file)
     # Inject an unknown metric control into the policy object
@@ -202,6 +205,7 @@ def test_unknown_metric(mock_policy_file):
     assert not any(r.control_id == "U1" for r in results)
 
 
+@patch.dict(os.environ, {"CI": "", "VENTURALITICA_STRICT": ""})
 def test_unexpected_error_eval(mock_policy_file):
     validator = AssuranceValidator(mock_policy_file)
     from venturalitica.metrics import METRIC_REGISTRY

tests/test_dashboard.py

@@ -24,6 +24,7 @@ def __init__(self):
         self.code = MagicMock()
         self.markdown = MagicMock()
         self.text = MagicMock()
+        self.write = MagicMock()
         self.button = MagicMock(return_value=False)
         self.spinner = MagicMock()
         self.spinner.return_value.__enter__ = MagicMock()