👷 每 3 天同步 DeepWiki Markdown 上下文 (#1665)

* 👷 定期同步 DeepWiki Markdown 上下文

* 👷 replace DeepWiki fetch with MCP sync

* 👷 embed dynamic DeepWiki validation

* 🔧 embed DeepWiki sync in workflow

* ⚡ skip unchanged DeepWiki snapshots

* 🔧 split DeepWiki workflow stages

* ⚡ cache DeepWiki repository inventory

Author: cyfung1031