Update dependencies and clean up project structure. Add cloud.google.com/go/compute/metadata as an indirect requirement in go.mod. Remove unused files and update package.json for Vite and React plugins. Refactor Makefile for improved build process.

web/node_modules/tailwindcss/stubs/config.simple.js

@@ -0,0 +1,7 @@
+module.exports = {
+  content: [],
+  theme: {
+    extend: {},
+  },
+  plugins: [],
+}