Refactor WebSocket server to use event-driven architecture with message queues

[Smartdevs17]

Context

The WebSocket server needs decoupling from business logic using event-driven patterns.

Current Limitation

WebSocket handlers contain business logic directly.

Expected Outcome

• Event-driven WebSocket architecture
• Message queue for event distribution
• Connection pooling and scaling
• Event replay for missed messages

Acceptance Criteria

• Event-driven architecture with pub/sub
• Redis pub/sub for multi-instance scaling
• Connection pooling with heartbeat
• Event replay for reconnection
• Message buffering for slow clients
• WebSocket authentication middleware
• Load testing for 10K+ connections

Technical Scope

• backend/src/websocket/ - WebSocket server
• backend/src/events/ - Event bus
• backend/src/services/queue.ts - Message queue
• frontend/store/ - WebSocket client state

[Muyideen-js]

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Hi! I'm a full-stack developer with TypeScript and Stellar ecosystem experience. I've reviewed this issue and can deliver a quality fix. Please assign this to me!

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[veloura-dev]

@veloura-dev has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Please maintainer..I can handle this professionally and make sure this issue is closed ASAP WITHOUT ERRORS.

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[oscar24357]

@oscar24357 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

hello boss, good afternoon, can you please assign me this issue

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[Wilfred007]

@Wilfred007 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Can I work on this task?

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This issue has been completed by @Wilfred007 as part of the Stellar Wave Program's 7th Wave 🥳

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