fix: address PR review comments - remove unused imports and fix bare excepts

- Remove unused imports (asdict, Any, EMC2305Error)
- Replace bare except clauses with except Exception
- Add explanatory comments for intentionally ignored exceptions

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: moffa90

emc2305/settings.py

@@ -8,9 +8,9 @@
 """
 
 import logging
-from dataclasses import dataclass, field, asdict
+from dataclasses import dataclass, field
 from pathlib import Path
-from typing import Optional, Dict, Any
+from typing import Optional, Dict
 from enum import Enum
 
 try:

examples/python/test_fan_control.py

@@ -94,8 +94,8 @@ def main():
         try:
             # Set fan to safe speed before exit
             fan_controller.set_pwm_duty_cycle(1, 30)
-        except:
-            pass
+        except Exception:
+            pass  # Ignore cleanup errors - fan_controller may not exist
 
 
 if __name__ == "__main__":

examples/python/test_fault_detection.py

@@ -155,8 +155,8 @@ def main():
         for channel in range(1, 6):
             try:
                 fan_controller.set_pwm_duty_cycle(channel, 50)
-            except:
-                pass
+            except Exception:
+                pass  # Ignore errors for channels without fans
 
         time.sleep(3)
 
@@ -188,10 +188,10 @@ def main():
             for channel in range(1, 6):
                 try:
                     fan_controller.set_pwm_duty_cycle(channel, 40)
-                except:
-                    pass
-        except:
-            pass
+                except Exception:
+                    pass  # Ignore errors for channels without fans
+        except Exception:
+            pass  # Ignore cleanup errors - fan_controller may not exist
 
 
 if __name__ == "__main__":

examples/python/test_fsc_mode.py

@@ -126,8 +126,8 @@ def main():
         try:
             # Set fan to safe idle speed
             fan_controller.set_target_rpm(1, 1500)
-        except:
-            pass
+        except Exception:
+            pass  # Ignore cleanup errors - fan_controller may not exist
 
 
 if __name__ == "__main__":

tests/test_driver_unit.py

@@ -14,7 +14,6 @@
     ControlMode,
     FanStatus,
     FanConfig,
-    EMC2305Error,
     EMC2305DeviceNotFoundError,
     EMC2305ValidationError,
 )