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/featured_event_controller.js

@@ -1,34 +1,47 @@
 import { Controller } from "@hotwired/stimulus"
 
+// Controller for handling animations of featured event cards
+// Uses intersection observer to trigger animations when cards come into view
 export default class extends Controller {
+  // Define targets for the controller
   static targets = ["card"]
+  
+  // Define CSS classes that can be used with this controller
   static classes = ["visible"]
+  
+  // Define configurable values with defaults
   static values = {
-    threshold: { type: Number, default: 0.1 },
-    rootMargin: { type: String, default: '0px 0px -50px 0px' },
-    staggerDelay: { type: Number, default: 0.2 }
+    threshold: { type: Number, default: 0.1 },           // Percentage of element visibility needed to trigger animation
+    rootMargin: { type: String, default: '0px 0px -50px 0px' }, // Margin around root element for intersection detection
+    staggerDelay: { type: Number, default: 0.2 }         // Delay between card animations in seconds
   }
 
+  // Initialize the controller when it connects to the DOM
   connect() {
     console.log("FeaturedEventController connected")
     this.setupIntersectionObserver()
     this.setupStaggeredAnimations()
   }
 
+  // Clean up observers when the controller disconnects
   disconnect() {
     if (this.observer) {
       this.observer.disconnect()
     }
   }
 
+  // Set up intersection observer to detect when cards come into view
   setupIntersectionObserver() {
+    // Configure observer options
     const observerOptions = {
       threshold: this.thresholdValue,
       rootMargin: this.rootMarginValue
     }
 
+    // Create intersection observer
     this.observer = new IntersectionObserver((entries) => {
      entries.forEach(entry => {
+       // Add visible class when card comes into view
        if (entry.isIntersecting) {
          entry.target.classList.add('visible')
        }
@@ -43,6 +56,7 @@ export default class extends Controller {
    })
   }
 
+  // Set up staggered animations for cards with progressive delays
   setupStaggeredAnimations() {
    console.log("Setting up staggered animations")
    console.log("Card targets:", this.cardTargets)