Restructure backend into modular API layers with admin/organizador/invitados routes, add role-based middleware, flatten module models, and update build scripts

packages/server/scripts/cleanup-model-folders.js

@@ -0,0 +1,15 @@
+const fs = require('fs');
+const path = require('path');
+const base = path.resolve(__dirname, '../src/modules');
+const mods = ['gifts', 'guests', 'todos'];
+for (const mod of mods) {
+  const folder = path.join(base, mod, 'model');
+  if (fs.existsSync(folder)) {
+    try {
+      fs.rmSync(folder, { recursive: true, force: true });
+      console.log(`Removed folder ${folder}`);
+    } catch (err) {
+      console.warn(`Could not remove ${folder}:`, err.message);
+    }
+  }
+}