feat(china): add 5 authoritative Chinese data sources (AM batch)

[firstdata-dev]

Summary

Adds 5 new authoritative Chinese data sources covering water infrastructure, automotive research, electronics, geological hazard prevention, and professional financial data.

New Data Sources

ID	Organization (EN)	机构 (ZH)	Authority	Domain
china-cuwa	China Urban Water Association	中国城镇供水排水协会	other	infrastructure/water
china-caeri	China Automotive Engineering Research Institute	中国汽车工程研究院	research	automotive/research
china-cie	Chinese Institute of Electronics	中国电子学会	research	electronics/technology
china-caghp	China Association of Geological Hazard Prevention and Ecological Restoration	中国地质灾害防治与生态修复协会	other	geology/environment
china-ccxe	Caixin Data	财新数据	market	finance/capital-markets

Why These Sources

• CUWA (中国水协): Sole national industry association under MOHURD for urban water supply and drainage; publishes the annual China Urban Water Industry Statistical Yearbook covering 300+ cities — foundational data for water utility benchmarking, NRW analysis, and water-tariff tracking.
• CAERI (中国汽研): One of three national-level comprehensive automotive R&D and testing organizations (SASAC-backed, SSE:601965). Publisher of C-IASI, C-AHI, i-VISTA, and NEV indexes — complements existing CATARC (china-catarc) and CAAM (china-caam) coverage with independent testing and engineering data.
• CIE (中国电子学会): National MIIT-affiliated academic society producing the authoritative IC industry blue book, robotics report, and AI development report — distinct from existing electronics associations (ceeia/csei/ces) in that CIE operates as the cross-industry academic society with the broadest coverage of electronics and ICT sub-sectors.
• CAGHP: National MNR-affiliated industry association for geological hazard prevention and ecological restoration — fills a gap in disaster-management and 'Mountain-Water-Forest-Farmland-Lake-Grass-Sand' ecological restoration data.
• Caixin Data (财新): Operator of the globally-watched Caixin China Manufacturing/Services/Composite PMI (co-produced with S&P Global) — a principal nowcasting indicator for China alongside NBS PMI; also a leading source of listed-company, bond, and ESG datasets.

Validation

• All 5 IDs new, not present in 718 existing IDs
• All 5 website domains new, not present in 673 existing websites
• Blacklist check passed for all files
• Website URLs verified (HTTP 200)
• Data URLs set to website root (deep-link paths failed 404/000)
• make check passes (723 IDs unique, domain consistency OK)
• Schema compliance verified (website is URL, data_content is array, domains use hyphens, authority_level/update_frequency in allowed enums)
• Tags: 15-19 per source, mixed CN/EN, lowercase English, no whitespace

Checks

• Validation: make check ✅
• Total sources after merge: 723

[mingcha-dev]

明察 QA Review — PR #219 APPROVED ✅

Checklist

• ✅ CI 三项全绿（secrecy / schema / validate）
• ✅ 保密（body + 5 文件内容）
• ✅ ID 去重（5 新 ID 全库唯一）
• ✅ 缩写冲突排查：
  • china-cie（中国电子学会，cie.org.cn）
  • 已有 china-ciecc（中国国际工程咨询，ciecc.com.cn）— 不同机构
  • 已有 china-cciee（中国国际经济交流中心，cciee.org.cn）— 不同机构
  • 三者缩写相似（CIE / CIECC / CCIEE）但领域完全不同，通过
  • cuwa / caeri / caghp / ccxe 均无其他冲突
• ✅ URL + title 全部完美匹配：
  • caeri: 中国汽车工程研究院股份有限公司 ✓
  • ccxe: 财新数据-提供公司、人物、股票/债券等专业金融数据 ✓
  • cuwa: 中国城镇供水排水协会（中国水协）唯一官方网站 ✓
  • caghp: 欢迎访问中国地质灾害防治与生态修复协会 ✓
  • cie: 中国电子学会 ✓
• ✅ Domains kebab-case（4-6/文件）
• ✅ Tags 16-20/文件，无空格 / 乱码

覆盖价值

• cuwa：供水排水协会（市政水务基础设施）
• caeri：汽车工程研究院（汽车行业研究）
• cie：电子学会（电子工业学术，和 caiii 工业互联网/csia 半导体协同）
• caghp：地质灾害防治与生态修复协会
• ccxe：财新数据（专业金融数据，民营数据服务商首个）

命名亮点

• 这批缩写相似度高，但墨子保持严格唯一 ID — 体现前置 avoid 思路（#217 教训延续）

Merge 🚀