fix: add turbopack root and webpack extensionAlias to web-evals next config

Workspace packages (@roo-code/types, @roo-code/ipc, @roo-code/cloud) use
NodeNext module resolution with .js extensions in TypeScript imports.
Without proper bundler config, these resolve to literal .js files instead
of the actual .ts source files, causing "Module not found" errors.

- Add turbopack.root pointing to monorepo root (matching web-roo-code)
- Add webpack resolve.extensionAlias to map .js -> .ts/.tsx for builds

Fixes #11853

apps/web-evals/next.config.ts

@@ -1,7 +1,20 @@
+import path from "path"
 import type { NextConfig } from "next"
 
 const nextConfig: NextConfig = {
-	turbopack: {},
+	turbopack: {
+		root: path.join(__dirname, "../.."),
+	},
+	webpack: (config) => {
+		// Enable .js -> .ts/.tsx resolution for workspace packages using NodeNext
+		// module resolution (e.g. @roo-code/types, @roo-code/ipc, @roo-code/cloud)
+		config.resolve.extensionAlias = {
+			".js": [".ts", ".tsx", ".js", ".jsx"],
+			".mjs": [".mts", ".mjs"],
+			".cjs": [".cts", ".cjs"],
+		}
+		return config
+	},
 }
 
 export default nextConfig