Refactor configuration management and remove deprecated files

- Consolidated database, file source, and field mapping configurations into dedicated modules under the `config` directory.
- Removed hardcoded database connection details from `migration.py` and replaced them with imports from the new configuration structure.
- Updated `ntfy_utils.py` and `run_incremental_sync.py` to utilize the new configuration imports for cleaner code and better maintainability.
- Deleted `update_config.py` as its contents have been integrated into the new configuration files.
- Added a new `settings.local.json` for managing permissions related to script execution.
- Enhanced the structure of the migration tasks and Excel configurations for better organization and clarity.

run_incremental_sync.py

@@ -2,7 +2,7 @@ import time
 import os
 import sys
 import pyodbc
-import config
+from config import SQL_SERVER_CONN, ACCESS_DRIVER, SYNC_MAPPING, POLL_INTERVAL, LOG_TABLE_CONFIG
 import db_utils
 import logging
 from logging.handlers import TimedRotatingFileHandler
@@ -95,7 +95,7 @@ def log_sync(message):
 def process_sync_task():
     """
     逻辑重构：
-    遍历 config.SYNC_MAPPING 中的每一个文件 -> 去日志表查询该文件下特定表的未同步记录。
+    遍历 SYNC_MAPPING 中的每一个文件 -> 去日志表查询该文件下特定表的未同步记录。
     """
     sql_conn = db_utils.get_sql_conn()
     sql_cursor = sql_conn.cursor()
@@ -104,12 +104,12 @@ def process_sync_task():
     # 标记是否有工作被处理（用于控制轮询休眠时间）
     work_done = False
     
-    cols = config.LOG_TABLE_CONFIG
+    cols = LOG_TABLE_CONFIG
     log_full_name = db_utils.fmt_table(cols['schema'], cols['table_name'])
 
     try:
         # === 核心循环：以配置文件为驱动 ===
-        for clean_path, tables_map in config.SYNC_MAPPING.items():
+        for clean_path, tables_map in SYNC_MAPPING.items():
             
             # 1. 准备查询条件
             # 获取该文件下所有需要同步的表名列表
@@ -265,8 +265,8 @@ def process_sync_task():
 
 if __name__ == "__main__":
     log_start("增量同步服务已启动 (配置驱动模式)")
-    log_info(f"轮询间隔: {config.POLL_INTERVAL} 秒")
-    log_info(f"监控配置: {len(config.SYNC_MAPPING)} 个文件")
+    log_info(f"轮询间隔: {POLL_INTERVAL} 秒")
+    log_info(f"监控配置: {len(SYNC_MAPPING)} 个文件")
     logger.info("=" * 70)
     
     while True:
@@ -274,7 +274,7 @@ if __name__ == "__main__":
             has_work = process_sync_task()
             # 如果有工作，说明可能还有积压，休息短一点(0.1s)
             # 如果没工作，休息标准间隔(5s)
-            time.sleep(0.1 if has_work else config.POLL_INTERVAL)
+            time.sleep(0.1 if has_work else POLL_INTERVAL)
         except KeyboardInterrupt:
             logger.info("=" * 70)
             log_stop("收到停止信号，服务正在关闭...")