Codex implemented a portal/context architecture to eliminate layout jank:
- Created FooterControlsProvider context with register/unregister methods
- GlobalFooter now reserves fixed height (88px + insets) for all modes
- Both AgentInputArea and RealtimeControls stack absolutely in same space
- Single shared Reanimated value drives cross-fade (250ms)
- Agent screen registers controls via context instead of rendering inline
- Content padding adjusted to account for footer height
- Borders and safe area moved to shared container
- AgentInputArea simplified to pure component (no internal animations)
This guarantees:
- No layout shifts during transitions
- Smooth cross-fade between control modes
- No gaps or double borders
- Both controls never occupy layout space simultaneously
Implementation by OpenAI Codex per architectural recommendation.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
