优化保存已处理交易哈希的逻辑，合并新哈希并保持原有顺序

main.py

@@ -182,8 +182,9 @@ def save_processed_hashes():
         except (FileNotFoundError, json.JSONDecodeError):
             existing_data = []
 
-        # 合并新哈希
-        updated_data = list(set(existing_data) | SEEN_TXHASHES)
+        # 合并新哈希并去重，保持原有顺序
+        new_hashes = [h for h in SEEN_TXHASHES if h not in existing_data]
+        updated_data = existing_data + new_hashes
 
         # 写回文件
         with open(HASH_FILE, "w", encoding="utf-8") as file:
@@ -192,7 +193,7 @@ def save_processed_hashes():
         LOGGER.info(
             "成功更新%s，新增%d条哈希，总计%d条记录",
             HASH_FILE,
-            len(SEEN_TXHASHES - set(existing_data)),
+            len(new_hashes),
             len(updated_data),
         )
     except IOError as e: