feat: Add real-time agent performance analytics dashboard

[waliilaw]

What's Added

A clean, professional analytics dashboard that gives developers real-time visibility into agent performance - something the framework was missing.

Why This Matters

Eremos agents run in the background detecting blockchain signals, but there was no way to see how they're performing. This dashboard solves that by automatically tracking and visualizing:

• Agent signal counts and confidence scores
• Recent detection activity
• Signal type distribution

Key Features

• Zero config - Works immediately with existing agents
• Real-time updates - Live monitoring of agent activity
• Clean UI - Professional dark theme, no bloat
• Responsive design - Works on desktop and mobile

Technical Implementation

• Lightweight analytics engine that captures signals automatically
• Simple HTTP server for the dashboard interface
• Clean integration with existing logger system
• Production-ready with proper error handling

Usage

npm run dashboard
# Visit http://localhost:3001

Makes Eremos much more developer-friendly by providing visibility into the swarm's performance.