WebSocket Handler for Real-time Updates

[buddha314]

Priority: MEDIUM | Type: Feature | Timeline: 2-3 hours

Implement WebSocket endpoint for real-time agent task updates.

Tasks

• Create server/app/api/websocket.py
• Implement WebSocket endpoint /ws/agents
• Subscribe to Event Bus events
• Broadcast events to connected clients
• Add connection management
• Add authentication/authorization
• Write WebSocket tests

Dependencies

Event Bus (Issue #19) must exist first

References

TODO comment in server/app/main.py line 132