feat: replace polling with WebSocket for real-time updates (#160)

[viktrified]

What I worked on

• Replaced 5-second polling mechanism with WebSocket-based real-time updates
• Improved responsiveness and reduced unnecessary network requests

Changes made

• Removed interval-based polling logic
• Implemented WebSocket connection handling
• Added real-time state updates from server events

Notes

• Assumes backend WebSocket endpoint is available
• Improves performance by reducing repeated API calls
• Open to feedback on connection handling and edge cases

Closes #160

[vercel]

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