diff --git a/src/tests/backend/auth/test_auth_utils.py b/src/tests/backend/auth/test_auth_utils.py
index 0fdc848bf..01eee62e5 100644
--- a/src/tests/backend/auth/test_auth_utils.py
+++ b/src/tests/backend/auth/test_auth_utils.py
@@ -5,10 +5,8 @@
 import pytest
 import base64
 import json
-import logging
 import sys
 import os
-import importlib.util
 from unittest.mock import patch, MagicMock
 
 # Add the source root directory to the Python path for imports
diff --git a/src/tests/backend/common/config/test_app_config.py b/src/tests/backend/common/config/test_app_config.py
index 95784031b..2652d4532 100644
--- a/src/tests/backend/common/config/test_app_config.py
+++ b/src/tests/backend/common/config/test_app_config.py
@@ -13,9 +13,6 @@
 import os
 import logging
 from unittest.mock import patch, MagicMock, AsyncMock
-from azure.identity import DefaultAzureCredential, ManagedIdentityCredential
-from azure.cosmos import CosmosClient
-from azure.ai.projects.aio import AIProjectClient
 
 # Add the source root directory to the Python path for imports
 import sys
diff --git a/src/tests/backend/common/database/test_cosmosdb.py b/src/tests/backend/common/database/test_cosmosdb.py
index 4a34a5f91..31cfe34ce 100644
--- a/src/tests/backend/common/database/test_cosmosdb.py
+++ b/src/tests/backend/common/database/test_cosmosdb.py
@@ -4,10 +4,8 @@
 import logging
 import sys
 import os
-from typing import Any, Dict, List, Optional
-from unittest.mock import AsyncMock, MagicMock, Mock, patch
+from unittest.mock import AsyncMock, Mock, patch
 import pytest
-import uuid
 
 # Add the backend directory to the Python path
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..', '..', '..', 'backend'))
diff --git a/src/tests/backend/common/database/test_database_base.py b/src/tests/backend/common/database/test_database_base.py
index 9491ed6b8..0eba3ba6f 100644
--- a/src/tests/backend/common/database/test_database_base.py
+++ b/src/tests/backend/common/database/test_database_base.py
@@ -2,9 +2,9 @@
 
 import sys
 import os
-from abc import ABC, abstractmethod
+from abc import ABC
 from typing import Any, Dict, List, Optional, Type
-from unittest.mock import AsyncMock, Mock, patch
+from unittest.mock import Mock
 import pytest
 
 # Add the backend directory to the Python path
diff --git a/src/tests/backend/common/database/test_database_factory.py b/src/tests/backend/common/database/test_database_factory.py
index bb3643322..e58be8672 100644
--- a/src/tests/backend/common/database/test_database_factory.py
+++ b/src/tests/backend/common/database/test_database_factory.py
@@ -3,8 +3,7 @@
 import logging
 import sys
 import os
-from typing import Optional
-from unittest.mock import AsyncMock, Mock, patch, MagicMock
+from unittest.mock import AsyncMock, Mock, patch
 import pytest
 
 # Add the backend directory to the Python path
diff --git a/src/tests/backend/common/utils/test_event_utils.py b/src/tests/backend/common/utils/test_event_utils.py
index 74a23e62e..99613092d 100644
--- a/src/tests/backend/common/utils/test_event_utils.py
+++ b/src/tests/backend/common/utils/test_event_utils.py
@@ -3,7 +3,7 @@
 import logging
 import sys
 import os
-from unittest.mock import Mock, patch, MagicMock
+from unittest.mock import Mock, patch
 import pytest
 
 # Mock external dependencies at module level
diff --git a/src/tests/backend/common/utils/test_otlp_tracing.py b/src/tests/backend/common/utils/test_otlp_tracing.py
index dbf3ab244..ac7474f1e 100644
--- a/src/tests/backend/common/utils/test_otlp_tracing.py
+++ b/src/tests/backend/common/utils/test_otlp_tracing.py
@@ -2,7 +2,7 @@
 
 import sys
 import os
-from unittest.mock import Mock, patch, MagicMock, call
+from unittest.mock import Mock, patch, call
 import pytest
 
 # Mock external dependencies at module level
diff --git a/src/tests/backend/common/utils/test_utils_af.py b/src/tests/backend/common/utils/test_utils_af.py
index 815f8c9fd..30307a9f4 100644
--- a/src/tests/backend/common/utils/test_utils_af.py
+++ b/src/tests/backend/common/utils/test_utils_af.py
@@ -1,10 +1,8 @@
 """Unit tests for utils_af module."""
 
-import logging
 import sys
 import os
-import uuid
-from unittest.mock import Mock, patch, AsyncMock, MagicMock
+from unittest.mock import Mock, patch, AsyncMock
 import pytest
 
 # Add the backend directory to the Python path
diff --git a/src/tests/backend/common/utils/test_utils_agents.py b/src/tests/backend/common/utils/test_utils_agents.py
index 8f4e80891..dd3833a89 100644
--- a/src/tests/backend/common/utils/test_utils_agents.py
+++ b/src/tests/backend/common/utils/test_utils_agents.py
@@ -4,7 +4,6 @@
 This module tests the utility functions for agent ID generation and database operations.
 """
 
-import logging
 import string
 import sys
 import unittest
@@ -33,10 +32,8 @@
 sys.modules['common.models'] = Mock()
 sys.modules['common.models.messages_af'] = Mock()
 
-import pytest
-
 from backend.common.database.database_base import DatabaseBase
-from backend.common.models.messages_af import CurrentTeamAgent, DataType, TeamConfiguration
+from backend.common.models.messages_af import CurrentTeamAgent, TeamConfiguration
 from backend.common.utils.utils_agents import (
     generate_assistant_id,
     get_database_team_agent_id,
diff --git a/src/tests/backend/common/utils/test_utils_date.py b/src/tests/backend/common/utils/test_utils_date.py
index 377e51757..4018a4429 100644
--- a/src/tests/backend/common/utils/test_utils_date.py
+++ b/src/tests/backend/common/utils/test_utils_date.py
@@ -7,16 +7,12 @@
 
 import json
 import locale
-import logging
 import unittest
 import sys
 import os
 from datetime import datetime
-from typing import Optional
 from unittest.mock import Mock, patch
 
-import pytest
-
 # Add the backend directory to the Python path
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..', '..', '..', 'backend'))
 
@@ -90,9 +86,6 @@ def mock_parse(date_str):
 import re as real_re
 utils_date_module.re = real_re
 
-# Import dateutil.parser after mocking to avoid import errors
-from dateutil import parser
-
 
 class TestFormatDateForUser(unittest.TestCase):
     """Test cases for format_date_for_user function."""
diff --git a/src/tests/backend/middleware/test_health_check.py b/src/tests/backend/middleware/test_health_check.py
index 5cb545b8b..76e88ccd5 100644
--- a/src/tests/backend/middleware/test_health_check.py
+++ b/src/tests/backend/middleware/test_health_check.py
@@ -1,7 +1,5 @@
 """Unit tests for backend.middleware.health_check module."""
-import asyncio
-import logging
-from unittest.mock import Mock, patch, AsyncMock, MagicMock
+from unittest.mock import Mock, patch, AsyncMock
 import pytest
 
 # Import the module under test
diff --git a/src/tests/backend/v4/api/test_router.py b/src/tests/backend/v4/api/test_router.py
index 9558a59a4..1d1882d71 100644
--- a/src/tests/backend/v4/api/test_router.py
+++ b/src/tests/backend/v4/api/test_router.py
@@ -7,7 +7,6 @@
 import sys
 import unittest
 from unittest.mock import Mock, patch
-import asyncio
 
 # Set up environment
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..', '..', 'backend'))
diff --git a/src/tests/backend/v4/callbacks/test_global_debug.py b/src/tests/backend/v4/callbacks/test_global_debug.py
index f630b605e..3180cf91e 100644
--- a/src/tests/backend/v4/callbacks/test_global_debug.py
+++ b/src/tests/backend/v4/callbacks/test_global_debug.py
@@ -1,7 +1,6 @@
 """Unit tests for backend.v4.callbacks.global_debug module."""
 import sys
-from unittest.mock import Mock, patch
-import pytest
+from unittest.mock import Mock
 
 # Mock the dependencies before importing the module under test
 sys.modules['azure'] = Mock()
diff --git a/src/tests/backend/v4/callbacks/test_response_handlers.py b/src/tests/backend/v4/callbacks/test_response_handlers.py
index 25ed5601f..a74e9c685 100644
--- a/src/tests/backend/v4/callbacks/test_response_handlers.py
+++ b/src/tests/backend/v4/callbacks/test_response_handlers.py
@@ -1,11 +1,8 @@
 """Unit tests for response_handlers module."""
 
-import asyncio
-import logging
 import sys
 import os
-import time
-from unittest.mock import Mock, patch, AsyncMock, MagicMock
+from unittest.mock import Mock, patch, AsyncMock
 import pytest
 
 # Add the backend directory to the Python path
diff --git a/src/tests/backend/v4/common/services/test_base_api_service.py b/src/tests/backend/v4/common/services/test_base_api_service.py
index 37a6f7963..5a45837f4 100644
--- a/src/tests/backend/v4/common/services/test_base_api_service.py
+++ b/src/tests/backend/v4/common/services/test_base_api_service.py
@@ -13,7 +13,6 @@
 import sys
 import importlib.util
 from unittest.mock import patch, MagicMock, AsyncMock, Mock
-from typing import Any, Dict, Optional, Union
 import aiohttp
 from aiohttp import ClientTimeout, ClientSession
 
diff --git a/src/tests/backend/v4/common/services/test_foundry_service.py b/src/tests/backend/v4/common/services/test_foundry_service.py
index 9b71cd28f..ee6b714e4 100644
--- a/src/tests/backend/v4/common/services/test_foundry_service.py
+++ b/src/tests/backend/v4/common/services/test_foundry_service.py
@@ -11,13 +11,9 @@
 
 import pytest
 import os
-import re
-import logging
-import aiohttp
 import sys
-import importlib.util
-from unittest.mock import patch, MagicMock, AsyncMock, Mock
-from typing import Any, Dict, List
+from unittest.mock import patch, MagicMock, AsyncMock
+from typing import Any, Dict
 
 # Add backend directory to sys.path for imports
 current_dir = os.path.dirname(os.path.abspath(__file__))
diff --git a/src/tests/backend/v4/common/services/test_mcp_service.py b/src/tests/backend/v4/common/services/test_mcp_service.py
index ae0b134e6..04e0844d8 100644
--- a/src/tests/backend/v4/common/services/test_mcp_service.py
+++ b/src/tests/backend/v4/common/services/test_mcp_service.py
@@ -14,10 +14,8 @@
 import sys
 import asyncio
 import importlib.util
-from unittest.mock import patch, MagicMock, AsyncMock, Mock
-from typing import Any, Dict, Optional
-import aiohttp
-from aiohttp import ClientTimeout, ClientSession, ClientError
+from unittest.mock import patch, MagicMock
+from aiohttp import ClientError
 
 # Add the src directory to sys.path for proper import
 src_path = os.path.join(os.path.dirname(__file__), '..', '..', '..', '..')
diff --git a/src/tests/backend/v4/common/services/test_plan_service.py b/src/tests/backend/v4/common/services/test_plan_service.py
index 3c6ccc734..455200af7 100644
--- a/src/tests/backend/v4/common/services/test_plan_service.py
+++ b/src/tests/backend/v4/common/services/test_plan_service.py
@@ -17,8 +17,8 @@
 import json
 import logging
 import importlib.util
-from unittest.mock import patch, MagicMock, AsyncMock, Mock
-from typing import Any, Dict, Optional, List
+from unittest.mock import patch, MagicMock, AsyncMock
+from typing import Any, List
 from dataclasses import dataclass
 
 # Add the src directory to sys.path for proper import
diff --git a/src/tests/backend/v4/common/services/test_team_service.py b/src/tests/backend/v4/common/services/test_team_service.py
index c8573fe7b..0fe9d9495 100644
--- a/src/tests/backend/v4/common/services/test_team_service.py
+++ b/src/tests/backend/v4/common/services/test_team_service.py
@@ -16,13 +16,9 @@
 import os
 import sys
 import asyncio
-import json
-import logging
 import uuid
 import importlib.util
-from unittest.mock import patch, MagicMock, AsyncMock, Mock
-from typing import Any, Dict, Optional, List, Tuple
-from dataclasses import dataclass
+from unittest.mock import patch, MagicMock, AsyncMock
 from datetime import datetime, timezone
 
 # Add the src directory to sys.path for proper import
diff --git a/src/tests/backend/v4/magentic_agents/common/test_lifecycle.py b/src/tests/backend/v4/magentic_agents/common/test_lifecycle.py
index c3ee233ce..d30b79654 100644
--- a/src/tests/backend/v4/magentic_agents/common/test_lifecycle.py
+++ b/src/tests/backend/v4/magentic_agents/common/test_lifecycle.py
@@ -2,7 +2,7 @@
 import asyncio
 import logging
 import sys
-from unittest.mock import Mock, patch, AsyncMock, MagicMock
+from unittest.mock import Mock, patch, AsyncMock
 import pytest
 
 # Mock the dependencies before importing the module under test
diff --git a/src/tests/backend/v4/magentic_agents/test_foundry_agent.py b/src/tests/backend/v4/magentic_agents/test_foundry_agent.py
index 335fc3a33..97da0b31e 100644
--- a/src/tests/backend/v4/magentic_agents/test_foundry_agent.py
+++ b/src/tests/backend/v4/magentic_agents/test_foundry_agent.py
@@ -1,11 +1,8 @@
 """Unit tests for backend.v4.magentic_agents.foundry_agent module."""
 
-import asyncio
-import logging
 import sys
 import os
-import time
-from unittest.mock import Mock, patch, AsyncMock, MagicMock, call
+from unittest.mock import Mock, patch, AsyncMock
 import pytest
 
 # Add the backend directory to the Python path
diff --git a/src/tests/backend/v4/magentic_agents/test_magentic_agent_factory.py b/src/tests/backend/v4/magentic_agents/test_magentic_agent_factory.py
index bfbece0c3..23e370f9c 100644
--- a/src/tests/backend/v4/magentic_agents/test_magentic_agent_factory.py
+++ b/src/tests/backend/v4/magentic_agents/test_magentic_agent_factory.py
@@ -1,10 +1,8 @@
 """Unit tests for backend.v4.magentic_agents.magentic_agent_factory module."""
-import asyncio
-import json
 import logging
 import sys
 from types import SimpleNamespace
-from unittest.mock import Mock, patch, AsyncMock, MagicMock
+from unittest.mock import Mock, AsyncMock
 import pytest
 
 # Mock the dependencies before importing the module under test
diff --git a/src/tests/backend/v4/magentic_agents/test_proxy_agent.py b/src/tests/backend/v4/magentic_agents/test_proxy_agent.py
index 2081f35b0..ca734df44 100644
--- a/src/tests/backend/v4/magentic_agents/test_proxy_agent.py
+++ b/src/tests/backend/v4/magentic_agents/test_proxy_agent.py
@@ -4,7 +4,7 @@
 import sys
 import time
 import uuid
-from unittest.mock import Mock, patch, AsyncMock, MagicMock
+from unittest.mock import Mock, patch, AsyncMock
 import pytest
 
 # Mock the dependencies before importing the module under test
@@ -57,7 +57,7 @@
 
 
 # Now import the module under test
-from backend.v4.magentic_agents.proxy_agent import ProxyAgent, create_proxy_agent
+import backend.v4.magentic_agents.proxy_agent
 
 
 class TestProxyAgentComplexScenarios:
@@ -123,9 +123,8 @@ def test_extract_logic(input_val):
 
     def test_timeout_and_error_scenarios(self):
         """Test timeout and error handling scenarios."""
-        import asyncio
-        
-        
+
+
         # Test that timeout logic would work
         loop = asyncio.new_event_loop()
         asyncio.set_event_loop(loop)
@@ -880,7 +879,6 @@ async def mock_wait_with_error_handling(request_id):
         mock_orchestration_config.clarifications = {"test-request": None}
         
         # This would test each error path
-        import asyncio
         loop = asyncio.new_event_loop()
         asyncio.set_event_loop(loop)
         
diff --git a/src/tests/backend/v4/orchestration/helper/test_plan_to_mplan_converter.py b/src/tests/backend/v4/orchestration/helper/test_plan_to_mplan_converter.py
index d25b97e83..333c2f434 100644
--- a/src/tests/backend/v4/orchestration/helper/test_plan_to_mplan_converter.py
+++ b/src/tests/backend/v4/orchestration/helper/test_plan_to_mplan_converter.py
@@ -8,7 +8,6 @@
 import os
 import sys
 import unittest
-import re
 
 # Set up environment variables (removed manual path modification as pytest config handles it)
 os.environ.update({
diff --git a/src/tests/backend/v4/orchestration/test_human_approval_manager.py b/src/tests/backend/v4/orchestration/test_human_approval_manager.py
index 952cbf166..bd1b27fd5 100644
--- a/src/tests/backend/v4/orchestration/test_human_approval_manager.py
+++ b/src/tests/backend/v4/orchestration/test_human_approval_manager.py
@@ -4,15 +4,11 @@
 """
 
 import asyncio
-import logging
 import os
 import sys
 import unittest
-from typing import Any, Optional
 from unittest.mock import Mock, AsyncMock, patch
 
-import pytest
-
 # Add the backend directory to the Python path
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..', '..', '..', 'backend'))
 
diff --git a/src/tests/backend/v4/orchestration/test_orchestration_manager.py b/src/tests/backend/v4/orchestration/test_orchestration_manager.py
index 119aa4372..dbc0d1fbc 100644
--- a/src/tests/backend/v4/orchestration/test_orchestration_manager.py
+++ b/src/tests/backend/v4/orchestration/test_orchestration_manager.py
@@ -7,12 +7,8 @@
 import logging
 import os
 import sys
-import uuid
-from typing import List, Optional
 from unittest import IsolatedAsyncioTestCase
-from unittest.mock import AsyncMock, Mock, patch, MagicMock
-
-import pytest
+from unittest.mock import AsyncMock, Mock, patch
 
 # Add the backend directory to the Python path
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..', '..', '..', 'backend'))
@@ -442,7 +438,7 @@ async def test_get_current_or_new_orchestration_new(self):
             mock_workflow = Mock()
             mock_init.return_value = mock_workflow
             
-            result = await OrchestrationManager.get_current_or_new_orchestration(
+            await OrchestrationManager.get_current_or_new_orchestration(
                 user_id=self.test_user_id,
                 team_config=self.test_team_config,
                 team_switched=False,
@@ -466,7 +462,7 @@ async def test_get_current_or_new_orchestration_team_switched(self):
             mock_new_workflow = Mock()
             mock_init.return_value = mock_new_workflow
             
-            result = await OrchestrationManager.get_current_or_new_orchestration(
+            await OrchestrationManager.get_current_or_new_orchestration(
                 user_id=self.test_user_id,
                 team_config=self.test_team_config,
                 team_switched=True,