feat: Adjust the directory structure

docs/tools/_meta.ts

@@ -0,0 +1,11 @@
+export default {
+  overview: 'Overview',
+  'file-system': 'File System',
+  'multi-file': 'Multi-File Read',
+  shell: 'Shell',
+  'todo-write': 'Todo Write',
+  'web-fetch': 'Web Fetch',
+  'web-search': 'Web Search',
+  memory: 'Memory',
+  'mcp-server': 'MCP Servers',
+};