feat: Add keyboard navigation to member linking dropdown

assets/js/app.js

@@ -24,9 +24,32 @@ import topbar from "../vendor/topbar"
 
 let csrfToken = document.querySelector("meta[name='csrf-token']").getAttribute("content")
 
+// Hooks for LiveView components
+let Hooks = {}
+
+// ComboBox hook: Prevents form submission when Enter is pressed in dropdown
+Hooks.ComboBox = {
+  mounted() {
+    this.handleKeyDown = (e) => {
+      const isDropdownOpen = this.el.getAttribute("aria-expanded") === "true"
+      
+      if (e.key === "Enter" && isDropdownOpen) {
+        e.preventDefault()
+      }
+    }
+    
+    this.el.addEventListener("keydown", this.handleKeyDown)
+  },
+  
+  destroyed() {
+    this.el.removeEventListener("keydown", this.handleKeyDown)
+  }
+}
+
 let liveSocket = new LiveSocket("/live", Socket, {
   longPollFallbackMs: 2500,
-  params: {_csrf_token: csrfToken}
+  params: {_csrf_token: csrfToken},
+  hooks: Hooks
 })
 
 // Listen for custom events from LiveView