feat(docs): add llms plugin (#1625)

## Summary                   
Add `vitepress-plugin-llms` to the Vite+ docs build so the published
docs include LLM-friendly documentation outputs.

This follows the same plugin-based approach used by
[tsdown](https://tsdown.dev/). The plugin generates `/llms.txt` during
`vitepress build`, along with the corresponding Markdown files that the
generated `.md` links point to.
 ## Details       
- Adds `vitepress-plugin-llms` to the docs dependencies.
- Registers the plugin in `docs/.vitepress/config.mts`.
- Excludes `team.md` from the LLM docs output.
- Uses the docs site description as the generated `llms.txt`
description.
- Leaves plugin defaults enabled, so generated `.md` links in
`llms.txt`are backed by actual generated Markdown files.


closes #1344

Author: jong-kyung

docs/.vitepress/config.mts

@@ -4,6 +4,7 @@ import type { VoidZeroThemeConfig } from '@voidzero-dev/vitepress-theme';
 import { extendConfig } from '@voidzero-dev/vitepress-theme/config';
 import { defineConfig, type HeadConfig } from 'vitepress';
 import { groupIconMdPlugin, groupIconVitePlugin } from 'vitepress-plugin-group-icons';
+import llmstxt from 'vitepress-plugin-llms';
 import { withMermaid } from 'vitepress-plugin-mermaid';
 
 const taskRunnerGuideItems = [
@@ -129,6 +130,11 @@ export default extendConfig(
               tsdown: 'https://tsdown.dev/tsdown.svg',
             },
           }),
+          llmstxt({
+            ignoreFiles: ['team.md'],
+            description: 'The Unified Toolchain for the Web',
+            details: '',
+          }),
         ],
       },
       themeConfig: {

docs/package.json

@@ -14,6 +14,7 @@
     "reka-ui": "^2.7.0",
     "typewriter-effect": "^2.22.0",
     "vitepress-plugin-group-icons": "^1.7.5",
+    "vitepress-plugin-llms": "^1.12.2",
     "vitepress-plugin-mermaid": "^2.0.17",
     "vue": "^3.5.27",
     "vue3-carousel": "^0.16.0"