Merge remote-tracking branch 'origin/main'

Author: stefan-ernst

frontend/src/lib/features/items/ItemDetail.svelte

@@ -757,6 +757,10 @@ import NativeSelect from '../../components/NativeSelect.svelte';
 
   function handleDeleteComplete(result) {
     showDeletionFeedback();
+    // Do not let the next detail briefly render the deleted shared-store item.
+    itemDetailStore.reset();
+    // Reparent navigation can reuse this component; allow its next item load.
+    itemDetailStore.loading = false;
     const collectionId = $currentRoute.params?.collectionId;
     // Navigate based on deletion result
     if (result?.mode === 'reparent' && result?.newParentId) {

frontend/src/lib/stores/itemDetailStore.svelte.js

@@ -643,7 +643,9 @@ class ItemDetailStore {
         return this.diagrams;
       })
       .catch((err) => {
-        if (isAbortError(err)) return this.diagrams;
+        if (isAbortError(err) || controller.signal.aborted || this.item?.id !== itemId) {
+          return this.diagrams;
+        }
         if (err?.status === 404) {
           this.markDeleted();
           return this.diagrams;