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

sources/ragflow-documents.md

@@ -1,3 +1,9 @@
+---
+type: "Reference"
+title: "RAGFlow 文档采样索引"
+openwiki_generated: true
+---
+
 # RAGFlow 文档采样索引
 
 > Data source: RAGFlow (`http://10.10.10.254:9980`) 18 KB