feat(openwiki v0.3.1): add YAML frontmatter + install-id markers from initial init run (2026-08-07)

sources/distributors-china-2026.md

@@ -1,3 +1,9 @@
+---
+type: "Reference"
+title: "全国经销商地图 · 2026-07-24 时点"
+openwiki_generated: true
+---
+
 # 全国经销商地图 · 2026-07-24 时点
 
 > **数据源**: Obsidian vault `02-Clients/Agents/*.md`（git-repo connector 自动同步，2026-08-07 写入）