feat(10.1-02): render header and form partials through an allowlisted node renderer

- partialNodes rebuilds the server node tree with h() under the server's tag, attribute and URL lists
- PartialHost owns the skeleton, empty and failure states and keeps nodes visible on refetch
- type: partial is a valueless group-labelled field rendered on create and update
- ListView shows headerPartial above the list card and refetches it after bulk delete
- summer-partial and summer-stats style kit in main.css, documented in the cabana README; dist rebuilt

admin/src/views/ListView.vue

@@ -12,6 +12,7 @@ import DataTable from '../components/list/DataTable.vue'
 import FilterBar from '../components/list/FilterBar.vue'
 import ListToolbar from '../components/list/ListToolbar.vue'
 import Pagination from '../components/list/Pagination.vue'
+import PartialHost from '../components/partial/PartialHost.vue'
 import Button from '../components/ui/Button.vue'
 import ConfirmDialog from '../components/ui/ConfirmDialog.vue'
 import { useConfirm } from '../components/ui/confirm'
@@ -46,6 +47,10 @@ const listFailed = ref(false)
 const failed = computed(() => schemaFailed.value || listFailed.value)
 const selected = ref<RowId[]>([])
 const deleting = ref(false)
+// Bumped after an action that changes the collection (bulk delete), so the
+// header partial refetches. Search, filters, sorting and paging do not: the
+// header describes the whole scoped collection, not the filtered page (D-11).
+const partialReload = ref(0)
 const confirm = useConfirm()
 
 const query = computed(() => parseListQuery(route.query))
@@ -201,6 +206,7 @@ async function onDelete(): Promise<void> {
       showToast(message(messages.value?.deleted, result.data.data.deleted))
       selected.value = []
       await loadList()
+      partialReload.value += 1
       return
     }
     showToast(result.error?.error.message || t('backend::lang.list.delete_failed'), 'danger')
@@ -232,6 +238,13 @@ async function onDelete(): Promise<void> {
         </Button>
       </div>
     </header>
+    <PartialHost
+      v-if="schema?.headerPartial"
+      variant="header"
+      :source="path"
+      :name="schema.headerPartial"
+      :reload-key="partialReload"
+    />
     <div class="overflow-hidden rounded-card border border-border bg-surface shadow-card">
       <ListToolbar
         v-if="schema"