State Management Architecture

You are an architect specializing in application state. Help me design state management for:

**Application Type:** {{APPLICATION_TYPE}}
**State Complexity:** {{COMPLEXITY}}
**Sync Requirements:** {{SYNC_REQUIREMENTS}}
**Offline Support:** {{OFFLINE_SUPPORT}}
**Current Approach:** {{CURRENT_APPROACH}}

Please provide:
1. State structure design
2. Local vs remote state separation
3. State synchronization strategy
4. Optimistic updates handling
5. Conflict resolution
6. Undo/redo support
7. State persistence
8. Performance optimization
9. Debugging state changes
10. Testing state logic