fix: remove unused imports and bare exception aliases (pyflakes F401/F841)

Remove unused imports across 86 files in src/, web_interface/, test/,
and scripts/ using autoflake. No logic changes — only dead import
statements and unused names in from-imports are removed.

Also remove bare exception aliases where the variable is never
referenced in the handler body:
- src/cache/disk_cache.py: except (IOError, OSError, PermissionError) as e
- src/cache_manager.py: except (OSError, IOError, PermissionError) as perm_error
- src/plugin_system/resource_monitor.py: except Exception as e
- web_interface/app.py: except Exception as read_err

86 files changed, 205 lines removed, 18 pre-existing test failures unchanged.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

test/conftest.py

@@ -5,7 +5,6 @@ Provides common fixtures for mocking core components and test setup.
 """
 
 import pytest
-import os
 import sys
 from pathlib import Path
 from unittest.mock import Mock, MagicMock

test/debug_nba_api.py

@@ -3,7 +3,6 @@
 Diagnostic script to examine NBA API data structure and identify the missing 'id' field issue.
 """
 import requests
-import json
 import logging
 from typing import Dict, Any
 

test/plugins/conftest.py

@@ -8,7 +8,7 @@ import sys
 import json
 from pathlib import Path
 from unittest.mock import MagicMock, Mock
-from typing import Any, Dict, Generator, Optional
+from typing import Any, Dict
 
 # Add project root to path
 project_root = Path(__file__).parent.parent.parent

test/plugins/test_plugin_base.py

@@ -6,9 +6,7 @@ Provides common test functionality for all plugins.
 
 import pytest
 import json
-from pathlib import Path
 from typing import Dict, Any
-from unittest.mock import MagicMock
 
 from src.plugin_system.plugin_loader import PluginLoader
 from src.plugin_system.base_plugin import BasePlugin

test/plugins/test_visual_rendering.py

@@ -5,7 +5,6 @@ Verifies that the visual display manager actually renders pixels,
 loads fonts, and can save snapshots.
 """
 
-import pytest
 from PIL import Image
 
 from src.plugin_system.testing import VisualTestDisplayManager

test/test_cache_manager.py

@@ -6,10 +6,7 @@ Tests cache functionality including memory cache, disk cache, strategy, and metr
 
 import pytest
 import time
-import json
-import tempfile
-from pathlib import Path
-from unittest.mock import Mock, MagicMock, patch
+from unittest.mock import patch
 from src.cache_manager import CacheManager
 from src.cache.memory_cache import MemoryCache
 from src.cache.disk_cache import DiskCache

test/test_config_manager.py

@@ -7,9 +7,6 @@ Tests configuration loading, migration, secrets handling, and validation.
 import pytest
 import json
 import os
-import tempfile
-from pathlib import Path
-from unittest.mock import Mock, patch, mock_open
 from src.config_manager import ConfigManager
 
 

test/test_config_service.py

@@ -1,11 +1,6 @@
-import time
 import pytest
-import threading
 import json
-import os
-import shutil
-from pathlib import Path
-from unittest.mock import Mock, MagicMock, patch
+from unittest.mock import MagicMock, patch
 from src.config_service import ConfigService
 from src.config_manager import ConfigManager
 

test/test_config_validation_edge_cases.py

@@ -10,11 +10,7 @@ Tests scenarios that commonly cause user configuration errors:
 """
 
 import pytest
-import json
 from pathlib import Path
-from unittest.mock import Mock, patch, MagicMock
-import tempfile
-import os
 
 # Add project root to path
 import sys

test/test_display_controller.py

@@ -1,7 +1,5 @@
-import pytest
 import time
-from unittest.mock import MagicMock, patch, ANY
-from src.display_controller import DisplayController
+from unittest.mock import MagicMock, patch
 
 class TestDisplayControllerInitialization:
     """Test DisplayController initialization and setup."""
@@ -25,7 +23,6 @@ class TestDisplayControllerInitialization:
         # Manually trigger the plugin loading logic that happens in __init__
         # Since we're using a fixture that mocks __init__ partially, we need to verify 
         # the interactions or simulate the loading if we want to test that specific logic
-        pass 
         # Note: Testing __init__ logic is tricky with the fixture. 
         # We rely on the fixture to give us a usable controller.
 

test/test_display_manager.py

@@ -1,7 +1,6 @@
 import pytest
-import time
-from unittest.mock import MagicMock, patch, ANY
-from PIL import Image, ImageDraw
+from unittest.mock import MagicMock, patch
+from PIL import ImageDraw
 from src.display_manager import DisplayManager
 
 @pytest.fixture

test/test_error_aggregator.py

@@ -9,11 +9,8 @@ Tests:
 - Thread safety
 """
 
-import pytest
-import time
 from datetime import datetime, timedelta
 from pathlib import Path
-from unittest.mock import Mock, patch
 import threading
 import sys
 
@@ -29,7 +26,7 @@ from src.error_aggregator import (
     get_error_aggregator,
     record_error
 )
-from src.exceptions import PluginError, ConfigError
+from src.exceptions import PluginError
 
 
 class TestErrorRecording:

test/test_error_handling.py

@@ -1,16 +1,10 @@
-import pytest
 import logging
 import json
-import tempfile
-from pathlib import Path
-from src.exceptions import CacheError, ConfigError, PluginError, DisplayError, LEDMatrixError
+from src.exceptions import CacheError, ConfigError, PluginError, DisplayError
 from src.common.error_handler import (
     handle_file_operation,
     handle_json_operation,
-    safe_execute,
-    retry_on_failure,
-    log_and_continue,
-    log_and_raise
+    safe_execute
 )
 
 class TestCustomExceptions:

test/test_font_manager.py

@@ -1,7 +1,5 @@
 import pytest
-import os
-from unittest.mock import MagicMock, patch, mock_open
-from pathlib import Path
+from unittest.mock import patch
 from src.font_manager import FontManager
 
 @pytest.fixture

test/test_layout_manager.py

@@ -6,10 +6,7 @@ Tests layout creation, management, rendering, and element positioning.
 
 import pytest
 import json
-import tempfile
-from pathlib import Path
-from unittest.mock import MagicMock, patch, Mock
-from datetime import datetime
+from unittest.mock import MagicMock
 from src.layout_manager import LayoutManager
 
 

test/test_nba_core_functionality.py

@@ -6,7 +6,6 @@ import sys
 import os
 import logging
 import json
-from typing import Dict, Any
 
 # Set up logging
 logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')

test/test_nba_data_structure.py

@@ -3,11 +3,8 @@
 Simple test script to verify NBA data structure includes team ID fields.
 """
 import sys
-import os
 import requests
 import logging
-import json
-from typing import Dict, Any
 
 # Set up logging
 logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')

test/test_nba_integration.py

@@ -6,7 +6,6 @@ import sys
 import os
 import logging
 import json
-from typing import Dict, Any
 
 # Set up logging
 logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')

test/test_nba_leaderboard_fix.py

@@ -6,7 +6,6 @@ This script simulates the leaderboard manager's data fetching process.
 import sys
 import os
 import logging
-from typing import Dict, Any
 
 # Add the src directory to Python path so we can import the leaderboard manager
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'src'))

test/test_plugin_loader.py

@@ -5,9 +5,7 @@ Tests plugin directory discovery, module loading, and class instantiation.
 """
 
 import pytest
-import sys
-from pathlib import Path
-from unittest.mock import MagicMock, patch, Mock, mock_open
+from unittest.mock import MagicMock, patch
 from src.plugin_system.plugin_loader import PluginLoader
 from src.exceptions import PluginError
 

test/test_plugin_loading_failures.py

@@ -15,8 +15,7 @@ Tests various failure modes that can occur during plugin loading:
 import pytest
 import json
 from pathlib import Path
-from unittest.mock import Mock, patch, MagicMock
-import tempfile
+from unittest.mock import patch, MagicMock
 import sys
 
 # Add project root to path
@@ -25,9 +24,7 @@ if str(project_root) not in sys.path:
     sys.path.insert(0, str(project_root))
 
 from src.plugin_system.plugin_manager import PluginManager
-from src.plugin_system.plugin_loader import PluginLoader
 from src.plugin_system.plugin_state import PluginState
-from src.exceptions import PluginError
 
 
 @pytest.fixture

test/test_plugin_system.py

@@ -1,12 +1,8 @@
-import pytest
-import os
-import sys
 import time
-from unittest.mock import MagicMock, patch, ANY, call
+from unittest.mock import MagicMock, patch
 from pathlib import Path
 from src.plugin_system.plugin_manager import PluginManager
 from src.plugin_system.plugin_state import PluginState
-from src.exceptions import PluginError
 
 class TestPluginManager:
     """Test PluginManager functionality."""
@@ -90,7 +86,6 @@ class TestPluginLoader:
         """Test dependency checking logic."""
         # This would test _check_dependencies_installed and _install_plugin_dependencies
         # which requires mocking subprocess calls and file operations
-        pass
 
 
 class TestPluginExecutor:

test/test_schema_manager.py

@@ -6,8 +6,6 @@ Tests schema loading, validation, default extraction, and caching.
 
 import pytest
 import json
-from pathlib import Path
-from unittest.mock import MagicMock, patch, mock_open
 from jsonschema import ValidationError
 from src.plugin_system.schema_manager import SchemaManager
 

test/test_text_helper.py

@@ -5,7 +5,7 @@ Tests text rendering, font loading, and text positioning utilities.
 """
 
 import pytest
-from unittest.mock import MagicMock, patch, Mock
+from unittest.mock import MagicMock, patch
 from PIL import Image, ImageDraw, ImageFont
 from src.common.text_helper import TextHelper
 

test/test_web_api.py

@@ -6,10 +6,9 @@ Tests Flask routes, request/response handling, and API functionality.
 
 import pytest
 import json
-import os
 import sys
 from pathlib import Path
-from unittest.mock import MagicMock, patch, Mock
+from unittest.mock import MagicMock, patch
 
 # Add project root to path
 project_root = Path(__file__).parent.parent
@@ -288,7 +287,6 @@ class TestDisplayAPI:
     @patch('web_interface.blueprints.api_v3._ensure_cache_manager')
     def test_stop_on_demand_display(self, mock_ensure_cache, client):
         """Test stopping on-demand display."""
-        from web_interface.blueprints.api_v3 import api_v3
         
         # Mock the cache manager returned by _ensure_cache_manager
         mock_cache_manager = MagicMock()
@@ -440,7 +438,6 @@ class TestPluginsAPI:
     
     def test_get_plugin_schema(self, client):
         """Test getting plugin configuration schema."""
-        from web_interface.blueprints.api_v3 import api_v3
         
         response = client.get('/api/v3/plugins/schema?plugin_id=weather')
         
@@ -477,7 +474,6 @@ class TestPluginsAPI:
     
     def test_get_operation_history(self, client):
         """Test getting operation history."""
-        from web_interface.blueprints.api_v3 import api_v3
         
         response = client.get('/api/v3/plugins/operation/history')
         
@@ -487,7 +483,6 @@ class TestPluginsAPI:
     
     def test_get_plugin_state(self, client):
         """Test getting plugin state."""
-        from web_interface.blueprints.api_v3 import api_v3
         
         response = client.get('/api/v3/plugins/state')
         

test/web_interface/integration/test_plugin_operations.py

@@ -5,12 +5,10 @@ Integration tests for plugin operations (install, update, uninstall).
 import unittest
 import tempfile
 import shutil
-import json
 from pathlib import Path
-from unittest.mock import Mock, patch
 
 from src.plugin_system.operation_queue import PluginOperationQueue
-from src.plugin_system.operation_types import OperationType, OperationStatus
+from src.plugin_system.operation_types import OperationType
 from src.plugin_system.state_manager import PluginStateManager
 from src.plugin_system.operation_history import OperationHistory
 

test/web_interface/test_dedup_unique_arrays.py

@@ -8,7 +8,6 @@ Tests import the production function from src.web_interface.validators
 to ensure they exercise the real code path.
 """
 
-import pytest
 
 from src.web_interface.validators import dedup_unique_arrays as _dedup_unique_arrays
 

test/web_interface/test_state_reconciliation.py

@@ -7,7 +7,7 @@ import tempfile
 import shutil
 import json
 from pathlib import Path
-from unittest.mock import Mock, MagicMock, patch
+from unittest.mock import Mock, patch
 
 from src.plugin_system.state_reconciliation import (
     StateReconciliation,
@@ -15,7 +15,7 @@ from src.plugin_system.state_reconciliation import (
     FixAction,
     ReconciliationResult
 )
-from src.plugin_system.state_manager import PluginStateManager, PluginState, PluginStateStatus
+from src.plugin_system.state_manager import PluginStateManager, PluginStateStatus
 
 
 class TestStateReconciliation(unittest.TestCase):