feat: enhance E2E testing setup and model reporting

- Added a new fixture to manage runtime report artifacts in a writable temp directory during E2E tests, addressing permission issues in local CI/dev environments.
- Updated `conftest.py` to include a requirements.txt file in the model packaging path for training activities.
- Refactored existing fixtures to use `pytest.fixture` instead of `pytest_asyncio.fixture` for better compatibility.
- Enhanced the `Reports` class to include a target alias for report metrics, ensuring compatibility with Evidently's reporting requirements.
- Introduced new test scenarios to validate the handling of missing and whitespace-only `date_column` inputs in the training workflow.

These changes improve the robustness of the E2E testing framework and enhance the clarity of model reporting metrics.

tests/sientia/test_reports.py

@@ -128,7 +128,10 @@ def test_add_data_quality_section_with_run(monkeypatch, tmp_path, stub_color_opt
     ReportMock.assert_called_once_with(
         metrics=[summary, column_metrics, conflict, correlations], options=report.options
     )
-    report_instance.run.assert_called_once_with(reference_data='ref', current_data='cur')
+    run_kwargs = report_instance.run.call_args.kwargs
+    assert run_kwargs['reference_data'] == 'ref'
+    assert run_kwargs['current_data'] == 'cur'
+    assert run_kwargs['column_mapping'].target == 'target'
     report_instance.save_html.assert_called_once_with(
         os.path.join(str(tmp_path), 'data_quality.html')
     )
@@ -160,6 +163,34 @@ def test_add_data_quality_section_run_without_base_path(monkeypatch, stub_color_
     report_instance.save_html.assert_not_called()
 
 
+def test_add_data_quality_section_non_default_target_keeps_conflict_metric(
+    monkeypatch, stub_color_options
+):
+    summary = object()
+    column_metrics = object()
+    conflict = object()
+    correlations = object()
+
+    monkeypatch.setattr(reports, 'DatasetSummaryMetric', lambda: summary)
+    monkeypatch.setattr(
+        reports,
+        'generate_column_metrics',
+        lambda *args, **kwargs: column_metrics,
+    )
+    monkeypatch.setattr(reports, 'ConflictTargetMetric', lambda: conflict)
+    monkeypatch.setattr(reports, 'DatasetCorrelationsMetric', lambda: correlations)
+
+    report = reports.Reports(reference_data='ref', current_data='cur', target_name='sales')
+    report.add_data_quality_section(columns=['c1'], run=False)
+
+    assert report.metrics[-4:] == [
+        summary,
+        column_metrics,
+        conflict,
+        correlations,
+    ]
+
+
 def test_add_data_drift_section_paths(monkeypatch, tmp_path, stub_color_options):
     drift_instances = [object(), object(), object()]
     DataDriftPresetMock = MagicMock(side_effect=drift_instances)
@@ -180,7 +211,10 @@ def test_add_data_drift_section_paths(monkeypatch, tmp_path, stub_color_options)
     report.add_data_drift_section(columns=['c1'], run=True)
     assert report.sections['data_drift'] == {'result': 'data_drift'}
     ReportMock.assert_called_with(metrics=[drift_instances[2]], options=report.options)
-    report_instance.run.assert_called_with(reference_data='ref', current_data='cur')
+    run_kwargs = report_instance.run.call_args.kwargs
+    assert run_kwargs['reference_data'] == 'ref'
+    assert run_kwargs['current_data'] == 'cur'
+    assert run_kwargs['column_mapping'].target == 'target'
     report_instance.save_html.assert_called_with(os.path.join(str(tmp_path), 'data_drift.html'))
 
 
@@ -273,10 +307,12 @@ def test_set_color_options_appends(monkeypatch):
     report = reports.Reports(reference_data='ref', current_data='cur', target_name='target')
     report.set_color_options(primary_color='#111', secondary_color='#222')
 
-    assert len(report.options) == 2
+    options = report.options
+    assert options is not None
+    assert len(options) == 2
     assert calls[0]['primary_color'] == '#0F4C81'
     assert calls[1]['primary_color'] == '#111'
-    assert report.options[1]['secondary_color'] == '#222'
+    assert options[1]['secondary_color'] == '#222'
 
 
 def test_save_all_sections_html_requires_base_path(stub_color_options):