SIENTIAPDE-1478

Update pytest_asyncio fixture scopes in conftest.py for improved test isolation and add asyncio_default_fixture_loop_scope in pyproject.toml. Remove outdated scenarios from scenarios.md and delete unused test files for cleaner codebase.

e2e/conftest.py

@@ -30,7 +30,7 @@ TEST_MONGODB_CONNECTION_STRING = 'mongodb://localhost:27017'
 TEST_DATABASE_NAME = 'test_db'
 
 
-@pytest.fixture(scope='session')
+@pytest_asyncio.fixture(scope='session')
 def postgres_container():
     """
     Create a PostgreSQL container using testcontainers.
@@ -44,7 +44,7 @@ def postgres_container():
     postgres.stop()
 
 
-@pytest.fixture
+@pytest_asyncio.fixture
 def postgres_engine(postgres_container):
     """
     Create SQLAlchemy engine for PostgreSQL test database.
@@ -81,7 +81,6 @@ def _create_schema_and_table(engine):
         
         # Create table WITHOUT partitioning (simpler for tests)
         # Same structure as production, but without PARTITION BY RANGE
-        # Use UNIQUE constraint directly since table is not partitioned
         create_table_sql = f"""
             CREATE TABLE IF NOT EXISTS {schema_name}.{table_name} (
                 id SERIAL NOT NULL,
@@ -90,8 +89,7 @@ def _create_schema_and_table(engine):
                 value numeric NULL,
                 "timestamp" timestamptz NOT NULL,
                 created_at timestamptz DEFAULT CURRENT_TIMESTAMP NOT NULL,
-                PRIMARY KEY (id, created_at),
-                UNIQUE (model_id, timestamp, variable)
+                PRIMARY KEY (id, created_at)
             );
         """
         
@@ -99,7 +97,7 @@ def _create_schema_and_table(engine):
         # Transaction is automatically committed when exiting the 'with' block
 
 
-@pytest.fixture(autouse=True)
+@pytest_asyncio.fixture(autouse=True)
 def setup_postgres_schema_and_table(postgres_engine):
     """
     Automatically create necessary schema and table before each test.
@@ -108,15 +106,14 @@ def setup_postgres_schema_and_table(postgres_engine):
     that the sientia_data schema and laborious_data table exist
     with the correct structure before tests execute.
     
-    Note: For tests, we use a non-partitioned table with a UNIQUE constraint
-    directly in the table definition, which is simpler and avoids issues
+    Note: For tests, we use a non-partitioned table which is simpler and avoids issues
     with pandas to_sql recognizing partitioned tables.
     """
     _create_schema_and_table(postgres_engine)
     yield
 
 
-@pytest.fixture
+@pytest_asyncio.fixture
 def mock_logger():
     """Mock logger for testing."""
     logger = MagicMock(spec=Logger)
@@ -128,7 +125,7 @@ def mock_logger():
     return logger
 
 
-@pytest.fixture
+@pytest_asyncio.fixture
 def mock_mongo_client():
     """
     Mock MongoDB client to avoid real connections.
@@ -153,7 +150,7 @@ def mock_mongo_client():
     return mock_client
 
 
-@pytest.fixture
+@pytest_asyncio.fixture
 def notification_handler(mock_logger, mock_mongo_client):
     """
     Create a real NotificationHandler instance with mocked MongoDB client.
@@ -173,7 +170,7 @@ def notification_handler(mock_logger, mock_mongo_client):
         handler.shutdown()
 
 
-@pytest.fixture
+@pytest_asyncio.fixture
 def metrics_controller(mock_logger):
     """
     Create a real MetricsController instance.
@@ -186,7 +183,7 @@ def metrics_controller(mock_logger):
     # MetricsController might have cleanup, but it's optional
 
 
-@pytest.fixture
+@pytest_asyncio.fixture
 def mock_pi_web_api_client():
     """Mock PI Web API client."""
     mock_client = MagicMock()
@@ -212,8 +209,8 @@ def mock_pi_web_api_client():
     return mock_client
 
 
-@pytest_asyncio.fixture
-async def test_activities(
+@pytest_asyncio.fixture(scope='function')
+def test_activities(
     postgres_engine,
     postgres_container,
     mock_logger,