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.

init_full_sync.py

@@ -1,5 +1,5 @@
 import pyodbc
-import config
+from config import SQL_SERVER_CONN, ACCESS_DRIVER, SYNC_MAPPING, BATCH_SIZE
 import db_utils
 import time
 import os
@@ -103,8 +103,8 @@ def run_full_sync():
     
     logger.info("=" * 70)
     log_start(logger, "全量初始化同步")
-    log_info(logger, f"配置文件数: {len(config.SYNC_MAPPING)} 个")
-    log_info(logger, f"批次大小: {config.BATCH_SIZE} 行")
+    log_info(logger, f"配置文件数: {len(SYNC_MAPPING)} 个")
+    log_info(logger, f"批次大小: {BATCH_SIZE} 行")
     logger.info("=" * 70)
     
     sync_start_time = time.time()
@@ -123,7 +123,7 @@ def run_full_sync():
         return
 
     # 第一层循环:遍历配置文件中的所有文件路径
-    for acc_path, tables_map in config.SYNC_MAPPING.items():
+    for acc_path, tables_map in SYNC_MAPPING.items():
         if not os.path.exists(acc_path):
             log_skip(logger, f"文件不存在: {acc_path}")
             continue
@@ -184,7 +184,7 @@ def run_full_sync():
                     last_log_time = start_time
                     
                     while True:
-                        rows = acc_cursor.fetchmany(config.BATCH_SIZE)
+                        rows = acc_cursor.fetchmany(BATCH_SIZE)
                         if not rows: break
                         
                         sql_cursor.executemany(insert_sql, rows)