fix(kilo-app): prevent flash of home screen before auth redirect

[iscekic]

Summary

• Fixed splash screen flash showing "Welcome to Kilo!" before redirecting anonymous users to the login screen
• Root cause: <Slot /> rendered the (app) route and SplashScreen.hideAsync() fired while router.replace to login was still in flight
• Fix: compute redirect need synchronously, gate <Slot /> rendering on it, and only hide splash screen once the user is on the correct route group

Test plan

• Open app as anonymous user — should see splash screen then login, no flash of home screen
• Open app as authenticated user — should see splash screen then home screen directly
• Sign out — should redirect to login without flash
• Sign in — should redirect to home without flash

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (1 files)

• kilo-app/src/app/_layout.tsx

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_{Reviewed by gpt-5.4-20260305 · 149,092 tokens}