kb: update log with migration details

log.md

@@ -7,3 +7,11 @@
 - 经 Grok 4.5 两轮 review 收敛至 v4
 - Repo: github.com/wahyd4/kb (private)
 - 设计原则：默认全存，人类筛选，Agent 编译
+
+## [2026-07-13] migrate | Content migrated from one-knowledge
+- 2,815 links-posts → raw/links/ (preserved original YYYY-ID structure)
+- 19 github-knowledge tech notes → wiki/tech/
+- 3 Clippings → raw/2025-07/
+- Sync script updated: ~/scripts/sync-links-to-wiki.py → writes to ~/Code/kb
+- Cron job 76ba07894174 updated to point to new KB
+- kb skill created