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1. _make_numeric_value截断保护 PIC 9(3)字段值超过999时截断(之前不截断) 2. flatfile.py字段路由 write_all_files按FD分配字段值到对应的文件 3. 端到端运行验证: 01-matching-1-1: PASS (8匹配/9不匹配) 03-matching-N-1: PASS (COPYBOOK正常解析) 10-divide-50: 程序自身OPEN逻辑问题 34-sort-anomaly: PARTIAL(异常测试用例部分通过) Co-Authored-By: Claude <noreply@anthropic.com>