fix: sidebar Right arrow reliably focuses first app container

- Only recall container elements (not nav bar buttons) from focus memory
- Retry after 200ms when containers aren't rendered yet (async route)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

neode-ui/src/composables/useControllerNav.ts

@@ -408,9 +408,20 @@ export function useControllerNav(containerRef?: { value: HTMLElement | null }) {
         // Jump to first container in main
         rememberFocus('sidebar', activeEl)
         const remembered = recallFocus('main')
+        // Only use remembered if it's a container (not a nav bar button)
+        const target = (remembered && isContainer(remembered)) ? remembered : null
         const containers = getContainers()
-        const target = remembered ?? containers[0]
-        if (target) focusEl(target)
+        const dest = target ?? containers[0]
+        if (dest) {
+          focusEl(dest)
+        } else {
+          // Containers may not be rendered yet (async load after route change)
+          // Retry after a short delay
+          setTimeout(() => {
+            const retryContainers = getContainers()
+            if (retryContainers[0]) focusEl(retryContainers[0])
+          }, 200)
+        }
         return
       }