fix: onboarding gamepad — autofocus, click sounds, focus styles

All screens:
- playNavSound('action') on every button click
- path-action-button orange focus glow (removed from suppression list)

Per-screen autofocus:
- Intro: CTA button (after animation)
- Path: Continue button
- Identity: name input
- Backup: passphrase input, Continue after download
- Verify: Sign Challenge, then Finish after verification
- Done: Set Password button

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

neode-ui/src/views/OnboardingOptions.vue

@@ -82,6 +82,7 @@
 import { ref, onMounted } from 'vue'
 import { useRouter } from 'vue-router'
 import { completeOnboarding } from '@/composables/useOnboarding'
+import { playNavSound } from '@/composables/useNavSounds'
 
 const router = useRouter()
 const selected = ref<string | null>(null)
@@ -100,6 +101,7 @@ async function proceed() {
   } catch (e) {
     if (import.meta.env.DEV) console.warn('completeOnboarding failed, localStorage fallback ensures onboarding is marked complete', e)
   }
+  playNavSound('action')
   router.push('/login').catch(() => {})
 }
 </script>