upgrade tailwind to v4

app/src/ui/client/BkndProvider.tsx

@@ -101,11 +101,13 @@ export function BkndProvider({
       }
 
       startTransition(() => {
-         setSchema(newSchema);
-         setWithSecrets(_includeSecrets);
-         setFetched(true);
-         set_local_version((v) => v + 1);
-         fetching.current = Fetching.None;
+         document.startViewTransition(() => {
+            setSchema(newSchema);
+            setWithSecrets(_includeSecrets);
+            setFetched(true);
+            set_local_version((v) => v + 1);
+            fetching.current = Fetching.None;
+         });
       });
    }
 

app/src/ui/client/schema/system/use-bknd-system.ts

@@ -36,6 +36,10 @@ export function useBkndSystemTheme() {
    return {
       theme: $sys.theme,
       set: $sys.actions.theme.set,
-      toggle: () => $sys.actions.theme.toggle(),
+      toggle: async () => {
+         document.startViewTransition(async () => {
+            await $sys.actions.theme.toggle();
+         });
+      },
    };
 }