Implement Full Habit Sync Between Frontend and Backend

[A23droid]

Description

Develop a fully synchronized system where all habit updates, deletions, and completions automatically reflect in the UI without refreshing.
Requires implementing an efficient state management and syncing mechanism.

Acceptance Criteria

• Real-time or pseudo-real-time habit syncing is implemented.
• Backend and frontend maintain consistent state.
• No stale UI states after habit updates.
• System handles failed sync attempts gracefully.