fix(journals): add type='button' to prevent form submission and migrate to V3 Action API for file downloads

src/routes/journals/ae_comp__journal_entry_quick_add.svelte

@@ -124,6 +124,7 @@
         </span>
         <div class="flex justify-end space-x-2 grow sm:grow-0">
             <button 
+                type="button"
                 class="btn btn-sm variant-ghost-surface"
                 onclick={() => note_content = ""}
                 disabled={is_submitting || note_content.length === 0}
@@ -131,6 +132,7 @@
                 Clear
             </button>
             <button 
+                type="button"
                 class="btn btn-sm variant-filled-primary font-bold shadow-md"
                 onclick={handle_submit}
                 disabled={is_submitting || !target_journal_id || note_content.length === 0}