{
 "feed": {
  "name": "城市事实 Change Feed",
  "version": "v0.2",
  "updated": "2026-09-08T10:00:00+08:00",
  "canonicalBase": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/",
  "note": "每一次 Canonical Fact 变化的订阅流；old_value 永不删除，仅标记 superseded 保留。"
 },
 "changes": [
  {
   "change_id": "chg-20260908-001",
   "entity_id": "WZ-GOOD-00000512",
   "entity_name": "温州大黄鱼",
   "predicate": "industry_output_value（产业产值·年度）",
   "change_type": "update",
   "old_value": "产值突破15亿元（2022年度口径）",
   "new_value": "19.2亿元（2025年度·全产业链口径）",
   "old_fact_id": "WZ-F-00512-03",
   "new_fact_id": "WZ-F-00512-09",
   "changed_at": "2026-09-08 13:18:22",
   "review_status": "approved",
   "reviewer": "领域编辑 · 产业经济组",
   "reason": "新新闻提供更新证据（2025年度口径），替代 2022 年度旧口径",
   "evidence_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/news/20260908-0347/",
   "fact_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/WZ-GOOD-00000512/"
  },
  {
   "change_id": "chg-20260908-006",
   "entity_id": "WZ-GOOD-00000512",
   "entity_name": "温州大黄鱼",
   "predicate": "aquaculture_output_2025（养殖产量·2025）",
   "change_type": "no_change",
   "old_value": "2025年温州大黄鱼养殖产量 2.2万吨",
   "new_value": null,
   "old_fact_id": "WZ-F-00512-01",
   "new_fact_id": null,
   "changed_at": "2026-09-08 13:17:58",
   "review_status": "approved",
   "reviewer": "系统自动（L1）",
   "reason": "独立第二来源确认现行事实",
   "evidence_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/news/20260908-0347/",
   "fact_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/WZ-GOOD-00000512/"
  },
  {
   "change_id": "chg-20260908-005",
   "entity_id": "WZ-SCHOOL-00001782",
   "entity_name": "温州市中小学校新建改扩建工程",
   "predicate": "project_total_investment（项目总投资）",
   "change_type": "new",
   "old_value": null,
   "new_value": "滨江校区总投资约 4.2 亿元（概算口径）",
   "old_fact_id": null,
   "new_fact_id": "（待分配）",
   "changed_at": "2026-09-08 13:14:42",
   "review_status": "pending",
   "reviewer": null,
   "reason": "计划/概算口径新主张",
   "evidence_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/news/20260908-0361/",
   "fact_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/WZ-SCHOOL-00001782/"
  },
  {
   "change_id": "chg-20260908-003",
   "entity_id": "WZ-SCHOOL-00001782",
   "entity_name": "温州市中小学校新建改扩建工程",
   "predicate": "planned_completion_year（计划建成年份）",
   "change_type": "new",
   "old_value": null,
   "new_value": "预计 2028 年秋季建成投用（计划口径）",
   "old_fact_id": null,
   "new_fact_id": "（待分配）",
   "changed_at": "2026-09-08 13:14:41",
   "review_status": "pending",
   "reviewer": null,
   "reason": "计划口径新主张，与已发生事实分开管理",
   "evidence_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/news/20260908-0361/",
   "fact_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/WZ-SCHOOL-00001782/"
  },
  {
   "change_id": "chg-20260908-002",
   "entity_id": "WZ-SCHOOL-00001782",
   "entity_name": "温州市中小学校新建改扩建工程",
   "predicate": "construction_started_on（开工日期）",
   "change_type": "new",
   "old_value": null,
   "new_value": "滨江校区项目于 2026-09-08 开工",
   "old_fact_id": null,
   "new_fact_id": "（待分配）",
   "changed_at": "2026-09-08 13:14:40",
   "review_status": "pending",
   "reviewer": null,
   "reason": "新检测到的已发生事件，当前事实库无对应记录",
   "evidence_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/news/20260908-0361/",
   "fact_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/WZ-SCHOOL-00001782/"
  },
  {
   "change_id": "chg-20260908-004",
   "entity_id": "WZ-TRANS-00000864",
   "entity_name": "温州市域铁路（S线网络）",
   "predicate": "rail_plus_consumption（轨道+消费场景）",
   "change_type": "no_change",
   "old_value": "凭S1/S2线车票享满减等消费联动（2026-03 起）",
   "new_value": null,
   "old_fact_id": "WZ-F-00864-05",
   "new_fact_id": null,
   "changed_at": "2026-09-08 12:02:10",
   "review_status": "approved",
   "reviewer": "系统自动（L1）",
   "reason": "新证据与既有事实一致，确认其仍然有效",
   "evidence_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/news/20260908-0365/",
   "fact_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/WZ-TRANS-00000864/"
  },
  {
   "change_id": "chg-20260508-103",
   "entity_id": "WZ-GOOD-00000512",
   "entity_name": "温州大黄鱼",
   "predicate": "city_industry_deployment（市级产业部署）",
   "change_type": "new",
   "old_value": null,
   "new_value": "市级专题推进大黄鱼产业高质量发展（2026-05）",
   "old_fact_id": null,
   "new_fact_id": "WZ-F-00512-08",
   "changed_at": "2026-05-08 15:12:00",
   "review_status": "approved",
   "reviewer": "领域编辑 · 产业经济组",
   "reason": "市级部署新主张",
   "evidence_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/news/105743242/",
   "fact_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/WZ-GOOD-00000512/"
  },
  {
   "change_id": "chg-20260421-102",
   "entity_id": "WZ-GOOD-00000512",
   "entity_name": "温州大黄鱼",
   "predicate": "aquaculture_output（养殖产量·年度）",
   "change_type": "update",
   "old_value": "17318吨（2022年度）",
   "new_value": "2.2万吨（2025年度）",
   "old_fact_id": "WZ-F-00512-02",
   "new_fact_id": "WZ-F-00512-01",
   "changed_at": "2026-04-21 09:40:12",
   "review_status": "approved",
   "reviewer": "系统自动（L1·权威统计口径）",
   "reason": "新统计年度数据发布",
   "evidence_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/news/105738139/",
   "fact_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/WZ-GOOD-00000512/"
  },
  {
   "change_id": "chg-20250829-101",
   "entity_id": "WZ-SCHOOL-00001782",
   "entity_name": "温州市中小学校新建改扩建工程",
   "predicate": "annual_projects_progress（年度进度）",
   "change_type": "update",
   "old_value": "2024 年度口径（已归档）",
   "new_value": "92个实施 / 34个完工（2025年度）",
   "old_fact_id": "（历史版本）",
   "new_fact_id": "WZ-F-01782-01",
   "changed_at": "2025-08-29 14:05:30",
   "review_status": "approved",
   "reviewer": "领域编辑 · 公共服务组",
   "reason": "年度进度数据更新",
   "evidence_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/news/105697993/",
   "fact_url": "https://huangzuomin.github.io/wz-fact-engine-demo/fact/WZ-SCHOOL-00001782/"
  }
 ]
}