fix link override

Author: yannbf

scripts/tasks/sandbox-parts.ts

@@ -537,20 +537,19 @@ export async function setupVitest(details: TemplateDetails, options: PassedOptio
   }
 
   let fileContent = await readFile(join(sandboxDir, configFile), 'utf-8');
-  // Insert resolve: { preserveSymlinks: true } as a sibling to plugins in the top-level config object
+
+  // Insert resolve: { preserveSymlinks: true } and optionally server.fs.allow as siblings to plugins
   // Handles both defineConfig({ ... }) and defineWorkspace([ ... , { ... }])
   fileContent = fileContent.replace(/(plugins\s*:\s*\[[^\]]*\],?)/, (match) => {
-    // Insert resolve after plugins
-    return `${match}\n  resolve: {\n    preserveSymlinks: true\n  },`;
-  });
+    let replacement = `${match}\n  resolve: {\n    preserveSymlinks: true\n  },`;
 
-  // In linked mode, add server.fs.allow to allow Vite to serve files from the monorepo root
-  if (options.link) {
-    fileContent = fileContent.replace(/(plugins\s*:\s*\[[^\]]*\],?)/, (match) => {
-      // Insert server.fs.allow after plugins (alongside resolve)
-      return `${match}\n  server: {\n    fs: {\n      allow: ['../../..']\n    }\n  },`;
-    });
-  }
+    // In linked mode, also add server.fs.allow to allow Vite to serve files from the monorepo root
+    if (options.link) {
+      replacement += `\n  server: {\n    fs: {\n      allow: ['../../..']\n    }\n  },`;
+    }
+
+    return replacement;
+  });
 
   // search for storybookTest({...}) and place `tags: 'vitest'` into it but tags option doesn't exist yet in the config. Also consider multi line
   const storybookTestRegex = /storybookTest\((\{[\s\S]*?\})\)/g;