Fix controller registration with proper namespacing

- Pin controllers under "controllers" namespace for eagerLoadControllersFrom
- Explicitly pin controllers/index.js and controllers/application.js
- Add "to" parameter to ensure correct file paths
- Controllers should now register with their proper names

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: kieranklaassen

app/javascript/controllers/clipboard_controller.js

@@ -2,6 +2,10 @@ import { Controller } from "@hotwired/stimulus"
 
 export default class extends Controller {
   static targets = ["content"]
+  
+  connect() {
+    console.log("Clipboard controller connected!")
+  }
 
   copy(event) {
     const sourceId = event.currentTarget.dataset.clipboardSource

config/importmap.rb

@@ -4,8 +4,10 @@
 pin "@hotwired/stimulus", to: "stimulus.min.js"
 pin "@hotwired/stimulus-loading", to: "stimulus-loading.js"
 
-# Pin all files from the engine's javascript directory
-pin_all_from File.expand_path("../app/javascript", __dir__), under: ".", to: "."
+# Pin controllers separately to ensure proper namespacing
+pin "controllers", to: "controllers/index.js"
+pin "controllers/application", to: "controllers/application.js"
+pin_all_from File.expand_path("../app/javascript/controllers", __dir__), under: "controllers", to: "controllers"
 
 # Pin marked for markdown parsing
 pin "marked", to: "https://cdn.jsdelivr.net/npm/[email protected]/+esm"