fix: use Alpine.data() to register giteaWorkspace component

Replaced global function giteaWorkspace() with Alpine.data('giteaWorkspace', ...)
registered via document.addEventListener('alpine:init', ...). This is the
recommended Alpine 3 approach that guarantees the component factory is
available before Alpine processes x-data directives.

Changed x-data="giteaWorkspace()" to x-data="giteaWorkspace" (Alpine.data
calls the factory automatically, no parentheses needed).

app/templates/gitea_workspace.html

@@ -36,7 +36,8 @@
 </style>
 
 <script>
-function giteaWorkspace() {
+document.addEventListener('alpine:init', () => {
+  Alpine.data('giteaWorkspace', () => {
   const params = new URLSearchParams(window.location.search);
   const owner = params.get('owner') || '';
   const repo = params.get('repo') || '';
@@ -658,9 +659,10 @@ function giteaWorkspace() {
       });
     },
   };
-}
+  });
+});
 </script>
-<div class="gw-main" x-data="giteaWorkspace()">
+<div class="gw-main" x-data="giteaWorkspace">
   <!-- File view -->
   <div x-show="showFile && !showEditor" x-transition>
     <div class="gw-file-toolbar">