Optimize Real-time Metrics Performance

[soovittt]

Description

Real-time metrics visualization may cause performance issues with many data points. No data point limiting or aggregation.

Current State

• Fixed 2-second refresh rate
• No data point limiting
• All data points rendered
• May cause slowdowns with long training runs

Files Affected

• app/components/LiveMetricsVisualization.tsx - Metrics component
• app/lib/analysisClient.ts - Data fetching

Expected Behavior

• Limit number of displayed data points
• Aggregate old data points (e.g., show mean of every 100 points)
• Configurable refresh rate
• Pause/resume functionality
• Data point limit configuration

Acceptance Criteria

• Implement data point limiting
• Add data aggregation for old points
• Make refresh rate configurable
• Add pause/resume functionality
• Add data point limit configuration
• Optimize rendering performance
• Add tests