fix(code-quality): add base tag to resolve Giscus discussion link issue (#366)

- Add base href="/code-quality/" to fix incorrect link generation in GitHub Discussions
- Giscus was incorrectly parsing links in /code-quality/code/ structure
- Base tag ensures all relative links are correctly resolved with the module's base path

Author: developerjhp

fundamentals/code-quality/.vitepress/shared.mts

@@ -80,6 +80,7 @@ export const shared = defineConfig({
 
     head.push(["meta", { property: "og:title", content: title }]);
     head.push(["meta", { property: "og:description", content: description }]);
+    head.push(["base", { href: "/code-quality/" }]);
 
     return head;
   },