Group C+ fixes

src/components/admin/admin-panel.tsx

@@ -199,7 +199,22 @@ export function AdminPanel({ initialTenants }: AdminPanelProps) {
         throw new Error(data.error || "Delete failed");
       }
       setDeleteModal(null);
-      await fetchTenants();
+      // Bug 32: K8s deletion is asynchronous — the resource enters a
+      // Terminating phase with a deletionTimestamp set, finalizers run,
+      // then the resource is fully removed. fetchTenants() right
+      // after the API call would race the K8s store and often still
+      // include the just-deleted row. Two complementary fixes:
+      //   1. Optimistically drop the row from local state so the UI
+      //      reflects the user's intent immediately.
+      //   2. Schedule a delayed refetch (1.5s) to pick up any side
+      //      effects (cascaded request rows, freshly-released names).
+      // The immediate fetchTenants() is kept as a "best chance" — if
+      // K8s does report the deletion synchronously (rare), we get the
+      // freshest data. If it doesn't, the optimistic update has us
+      // covered until the delayed refetch lands.
+      setTenants((prev) => prev.filter((t) => t.metadata.name !== name));
+      fetchTenants();
+      setTimeout(() => fetchTenants(), 1500);
     } catch (e: any) {
       setError(e.message);
     } finally {