Launcher: Resolved session selection hang and improved reactivity pattern.

src/routes/events/ae_comp__event_files_upload.svelte

@@ -3,7 +3,7 @@
      * src/routes/events/ae_comp__event_files_upload.svelte
      * Specialized component for uploading files and automatically linking them to Event objects.
      */
-    import { LoaderCircle } from 'lucide-svelte';
+    import { LoaderCircle, Upload, UploadCloud } from 'lucide-svelte';
     import Element_input_files_tbl from '$lib/elements/element_input_files_tbl.svelte';
 
     // Import storage, functions, and libraries
@@ -67,6 +67,13 @@
     let ae_promises: key_val = $state({});
     let input_element_id = 'ae_comp__event_files_upload__input';
 
+    // WHY: Keep task_id in sync with prop if it hasn't been set by an upload cycle yet
+    $effect(() => {
+        if (!ae_promises.upload__hosted_file_obj) {
+            task_id = link_to_id;
+        }
+    });
+
     function prevent_default<T extends Event>(fn: (event: T) => void) {
         return function (event: T) {
             event.preventDefault();
@@ -193,7 +200,7 @@
 >
     {#await ae_promises.upload__hosted_file_obj}
         <div class="text-lg flex flex-row gap-1 items-center justify-center">
-            <Lucide.LoaderCircle class="animate-spin m-1" />
+            <LoaderCircle class="animate-spin m-1" />
             <span class="">
                 Uploading
                 {#if $ae_sess.api_upload_kv[task_id]}
@@ -222,7 +229,7 @@
         >
             {#if label}{@render label()}{:else}
                 <div class="flex items-center justify-center gap-2 mb-2 pt-2">
-                    <Lucide.Upload class="text-primary-500" />
+                    <Upload class="text-primary-500" />
                     <strong class="preset-tonal-primary px-3 py-1 rounded-full"
                         >Select Files</strong
                     >