Update asset manifest and importmap configuration

- Replace application.js with new path for leva/application.js
- Adjust asset manifest to link JavaScript files from ../../javascript/leva
- Update importmap to pin controllers from the new leva/controllers directory
- Clean up unnecessary links and ensure proper file structure

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

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

Author: kieranklaassen

app/assets/config/leva_manifest.js

@@ -1,5 +1,3 @@
 //= link_directory ../stylesheets/leva .css
-//= link_directory ../builds/leva .css
-//= link application.js
-//= link_tree ../../javascript/controllers .js
-//= link_tree ../../../vendor/javascript .js
+//= link_directory ../../javascript/leva .js
+//= link_tree ../../javascript/leva/controllers .js

app/javascript/application.js

@@ -1,7 +1,5 @@
-// Import and register all your controllers from the importmap
-
-import { application } from "controllers/application"
+import { application } from "controllers/application";
 
 // Eager load all controllers defined in the import map under controllers/**/*_controller
-import { eagerLoadControllersFrom } from "@hotwired/stimulus-loading"
-eagerLoadControllersFrom("controllers", application)
+import { eagerLoadControllersFrom } from "@hotwired/stimulus-loading";
+eagerLoadControllersFrom("controllers", application);

app/javascript/controllers/index.js

@@ -1,11 +1,11 @@
 # Pin npm packages by running ./bin/importmap
+pin "application", to: "leva/application.js", preload: true
 
-pin "application", preload: true
 pin "@hotwired/stimulus", to: "stimulus.min.js"
 pin "@hotwired/stimulus-loading", to: "stimulus-loading.js"
 
 # Pin controllers using the engine pattern
-pin_all_from Leva::Engine.root.join("app/javascript/controllers"), under: "controllers", to: "controllers"
+pin_all_from Leva::Engine.root.join("app/javascript/leva/controllers"), under: "controllers", to: "leva/controllers"
 
 # Pin marked for markdown parsing
 pin "marked", to: "https://cdn.jsdelivr.net/npm/[email protected]/+esm"