Ok - this time add the new controllers we stripped out of inline and add back the csp

app/javascript/controllers/mobile_sidebar_controller.js

@@ -0,0 +1,21 @@
+import { Controller } from "@hotwired/stimulus";
+
+export default class extends Controller {
+  static targets = ["sidebarOverlay", "button"];
+
+  connect() {
+    // Initialize mobile sidebar functionality
+  }
+
+  openSidebar() {
+    if (this.hasSidebarOverlayTarget) {
+      this.sidebarOverlayTarget.classList.remove('hidden');
+    }
+  }
+
+  closeSidebar() {
+    if (this.hasSidebarOverlayTarget) {
+      this.sidebarOverlayTarget.classList.add('hidden');
+    }
+  }
+}