optimize: enhance the nav check reachability

Author: Charliechen114514

documents/.pages

@@ -17,4 +17,5 @@ nav:
     - 实战项目: projects/
   - 参考:
     - C++ 特性参考卡: cpp-reference/
+  - 附录: appendix/
   - 标签: tags.md

documents/tags.md

@@ -8,3 +8,5 @@ description: "按标签浏览所有教程文章"
 本教程使用标签来组织和分类文章，方便你按主题查找相关内容。
 
 点击下方标签可以查看所有使用该标签的文章。
+
+<!-- material/tags -->

documents/vol2-modern-features/.pages

@@ -1,14 +1,14 @@
 title: 卷二 · 现代 C++ 特性
 nav:
-  - ch00-move-semantics
-  - ch01-smart-pointers
-  - ch02-constexpr
-  - ch03-lambda
-  - ch04-type-safety
-  - ch05-structured-bindings
-  - ch06-auto-decltype
-  - ch07-attributes
-  - ch08-string-view
-  - ch09-filesystem
-  - ch10-error-handling
-  - ch11-user-defined-literals
+  - ch00-move-semantics/
+  - ch01-smart-pointers/
+  - ch02-constexpr/
+  - ch03-lambda/
+  - ch04-type-safety/
+  - ch05-structured-bindings/
+  - ch06-auto-decltype/
+  - ch07-attributes/
+  - ch08-string-view/
+  - ch09-filesystem/
+  - ch10-error-handling/
+  - ch11-user-defined-literals/

documents/vol8-domains/.pages

@@ -1,7 +1,7 @@
 title: 卷八 · 领域应用
 nav:
-  - embedded
-  - networking
-  - gui-graphics
-  - data-storage
-  - algorithms
+  - embedded/
+  - networking/
+  - gui-graphics/
+  - data-storage/
+  - algorithms/

documents/vol9-open-source-project-learn/.pages

@@ -1,3 +1,3 @@
 title: 卷九 · 开源项目学习
 nav:
-  - chrome
+  - chrome/

documents/vol9-open-source-project-learn/chrome/.pages

@@ -1,3 +1,3 @@
 title: Chromium
 nav:
-  - 01_once_callback
+  - 01_once_callback/

mkdocs.yml

@@ -174,8 +174,7 @@ plugins:
         - trimmer
 
   # 标签插件 - 为文章添加标签分类
-  - tags:
-      tags_file: tags.md
+  - tags
 
   # Awesome Pages 插件 - 自动展开 nav 中的目录引用，支持 .pages 文件控制排序和标题
   - awesome-pages