Add summary statistics and macroeconomic data files for 2025

- Created summary_statistics.csv with total news articles and key metrics from January 1 to October 13, 2025.
- Added 一号文件十四五十五五规划情况.csv detailing keyword occurrences related to planning documents.
- Introduced 主要宏观经济数据.csv capturing mentions of key economic indicators.
- Included 国外交流随行企业与企业家名单.csv listing leaders and their engagements with foreign enterprises.
- Added 国家领导人考察行程清单.csv documenting leaders' inspection itineraries.
- Created 国际合作与外交动态.csv summarizing international cooperation and diplomatic activities.
- Added 高频行业关键词统计.csv with statistics on frequently mentioned industry keywords.

research/xwlb25_01_25_10/industry_keywords.csv

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+关键词,出现次数,占比
+人工智能,335,11.0%
+新能源,266,8.7%
+航空,235,7.7%
+航天,200,6.5%
+数字经济,123,4.0%
+大数据,74,2.4%
+新材料,63,2.1%
+全国统一大市场,54,1.8%
+5G,48,1.6%
+生物医药,40,1.3%
+人形机器人,34,1.1%
+集成电路,31,1.0%
+物联网,29,0.9%
+芯片,28,0.9%
+工业机器人,26,0.9%
+智能制造,25,0.8%
+绿色能源,23,0.8%
+电动汽车,22,0.7%
+轨道交通,17,0.6%
+半导体,13,0.4%
+云计算,12,0.4%
+高端制造,9,0.3%
+海洋工程,5,0.2%
+区块链,3,0.1%
+数控机床,2,0.1%
+工业软件,1,0.0%