Batch 1: Fix technical issues in 200-area/

- Fix dataview paths in 6 hub files (2. Areas/ → 200-area/)
- Archive 2 empty files to 400-archive/_empty-files/
- Remove executable permission from Clash热点升级.md
- Add security warning to Bills.md for sensitive VPN credentials

(vault changes by Claude Code)

200-area/Blog/Blog.md

@@ -1,6 +1,6 @@
 ### Notes
 ```dataview
-table file.ctime as Date from "2. Areas/Blog"
+table file.ctime as Date from "200-area/Blog"
 sort file.name
 ```
 

200-area/Finance/Finance.md

@@ -1,6 +1,6 @@
 ### Notes
 ```dataview
-table file.ctime as Date from "2. Areas/Finance"
+table file.ctime as Date from "200-area/Finance"
 sort file.name
 ```
 

200-area/GFW/Bills.md

@@ -1,4 +1,9 @@
-
+---
+⚠️ **警告 WARNING**: 此文件包含敏感信息（VPN订阅链接和tokens）
+- 建议迁移到密码管理器（如1Password, Bitwarden）
+- 避免提交到公开git仓库
+- 定期更新和轮换凭证
+---
 
 https://laomaoyun.me/
 

200-area/Health/Health.md

@@ -1,6 +1,6 @@
 ### Notes
 ```dataview
-table file.ctime as Date from "2. Areas/Health"
+table file.ctime as Date from "200-area/Health"
 sort file.name
 ```
 

200-area/House/House.md

@@ -1,6 +1,6 @@
 ### Notes
 ```dataview
-table file.ctime as Date from "2. Areas/House"
+table file.ctime as Date from "200-area/House"
 sort file.name
 ```
 

200-area/Personal Development/Personal Development.md

@@ -1,6 +1,6 @@
 ### Notes
 ```dataview
-table file.ctime as Date from "2. Areas/Personal Development"
+table file.ctime as Date from "200-area/Personal Development"
 sort file.name
 ```
 

200-area/Productivity/Productivity.md

@@ -1,6 +1,6 @@
 ### Notes
 ```dataview
-table file.ctime as Date from "2. Areas/Productivity"
+table file.ctime as Date from "200-area/Productivity"
 sort file.name
 ```