Implement ticket selection with Stimulus controller and improve code documentation

- Add ticket selection functionality to event show page using Stimulus
- Create ticket_selection_controller.js for handling ticket quantity changes
- Update ticket card component and event show view to work with Stimulus
- Add comprehensive comments to all JavaScript files for better maintainability
- Remove dependent: :destroy from event ticket_types association

app/javascript/controllers/shadcn_test_controller.js

@@ -3,15 +3,19 @@ import React from "react"
 import { createRoot } from "react-dom/client"
 import { Button } from "@/components/button"
 
-// Connects to data-controller="shadcn-test"
+// Controller for testing shadcn/ui React components within a Stimulus context
+// Renders a React button component to verify the PostCSS and component setup
 export default class extends Controller {
+  // Define targets for the controller
   static targets = ["container"]
 
+  // Initialize and render the React component when the controller connects
   connect() {
     console.log("Shadcn Button Test Controller connected")
     this.renderButton()
   }
 
+  // Render the React button component inside the target container
   renderButton() {
     const container = this.containerTarget
     const root = createRoot(container)
@@ -32,6 +36,7 @@ export default class extends Controller {
     )
   }
 
+  // Handle button click events
   handleClick = () => {
     alert("✅ Le bouton shadcn fonctionne avec PostCSS !")
     console.log("Shadcn button clicked - PostCSS compilation successful")