style: normalize code formatting across the codebase

- Standardize quote style (single to double quotes)
- Improve code formatting consistency
- Apply formatting to utilities, GUI components, and tools
- Update imports and docstrings for consistency

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

config/loader.py

@@ -28,10 +28,12 @@ class ConfigLoader:
         """
         if os.path.exists(config_file):
             try:
-                with open(config_file, 'r', encoding='utf-8') as f:
+                with open(config_file, "r", encoding="utf-8") as f:
                     loaded_settings = json.load(f)
                 # 合并默认配置和加载的配置
-                merged_settings = ConfigLoader._merge_settings(DEFAULT_SETTINGS_DICT, loaded_settings)
+                merged_settings = ConfigLoader._merge_settings(
+                    DEFAULT_SETTINGS_DICT, loaded_settings
+                )
                 return ConfigLoader._dict_to_config(merged_settings)
             except (json.JSONDecodeError, IOError) as e:
                 print(f"加载配置文件失败: {e}，使用默认配置")
@@ -57,7 +59,7 @@ class ConfigLoader:
             # 确保配置目录存在
             os.makedirs(os.path.dirname(config_file), exist_ok=True)
 
-            with open(config_file, 'w', encoding='utf-8') as f:
+            with open(config_file, "w", encoding="utf-8") as f:
                 json.dump(config.to_dict(), f, ensure_ascii=False, indent=2)
             return True
         except IOError as e:
@@ -79,7 +81,11 @@ class ConfigLoader:
         result = defaults.copy()
 
         for key, value in loaded.items():
-            if key in result and isinstance(result[key], dict) and isinstance(value, dict):
+            if (
+                key in result
+                and isinstance(result[key], dict)
+                and isinstance(value, dict)
+            ):
                 result[key] = ConfigLoader._merge_settings(result[key], value)
             else:
                 result[key] = value
@@ -117,20 +123,26 @@ class ConfigLoader:
                 username=database_dict.get("username", ""),
                 password=database_dict.get("password", ""),
                 driver=database_dict.get("driver", "ODBC Driver 18 for SQL Server"),
-                trust_server_certificate=database_dict.get("trust_server_certificate", "yes"),
+                trust_server_certificate=database_dict.get(
+                    "trust_server_certificate", "yes"
+                ),
             ),
             paths=PathConfig(
                 data_dir=paths_dict.get("data_dir", ""),
                 production_id_file=paths_dict.get("production_id_file", ""),
-                default_output=paths_dict.get("default_output", "离散备料计划维护_合并.xlsx"),
-                validation_output=paths_dict.get("validation_output", "物料状态校验结果.xlsx"),
+                default_output=paths_dict.get(
+                    "default_output", "离散备料计划维护_合并.xlsx"
+                ),
+                validation_output=paths_dict.get(
+                    "validation_output", "物料状态校验结果.xlsx"
+                ),
             ),
             extraction=ExtractionConfig(
                 batch_size=extraction_dict.get("batch_size", 100),
                 verbose=extraction_dict.get("verbose", True),
                 auto_convert=extraction_dict.get("auto_convert", True),
                 merge_batches=extraction_dict.get("merge_batches", True),
-            )
+            ),
         )