Enhancement: Real-time session activity indicators and notifications

[vultuk]

Description

Add comprehensive activity indicators and notifications to monitor session status and important events across multiple sessions.

Current Problem

• No visibility into background session activity
• Missing important events in inactive sessions
• No way to know when long-running commands complete
• Difficult to identify which sessions need attention

Visual Indicators

Session Status Icons

• 🟢 Active: Currently receiving output
• 🟡 Idle: No activity for 30+ seconds
• 🔵 Input Required: Waiting for user input
• 🔴 Error: Command failed or session crashed
• ⏸️ Paused: Session suspended
• 🔄 Processing: Command running
• ✅ Completed: Last command successful
• ⚠️ Warning: Non-zero exit code

Activity Sparklines

• Mini graph showing activity over time
• CPU/Memory usage indicators
• Network I/O visualization
• Output rate (lines per second)

Progress Indicators

• Command execution timer
• Progress bars for recognized operations (npm install, git clone, etc.)
• Estimated time remaining for common tasks
• Spinner animations for active processes

Notification System

Browser Notifications

• Command completion alerts
• Error notifications for background sessions
• Input required notifications
• Session disconnect warnings
• Configurable notification preferences

In-App Notifications

• Toast messages for important events
• Badge counts on tabs/sessions
• Status bar with recent events
• Activity feed sidebar

Smart Notifications

• Pattern matching for important output (e.g., "ERROR", "FAILED")
• Regex-based custom alerts
• Threshold alerts (execution time > X)
• Silence notifications during focus mode

Session Monitoring Dashboard

Overview Panel

┌─────────────────────────────────────┐
│ Active Sessions: 5                  │
│ ├─ Running: 3                       │
│ ├─ Idle: 1                          │
│ └─ Waiting: 1                       │
│                                     │
│ Resource Usage:                     │
│ ├─ CPU: ████████░░ 76%             │
│ └─ Memory: ██████░░░░ 52%          │
│                                     │
│ Recent Events:                      │
│ • Build completed (Frontend)        │
│ • Error in Backend API              │
│ • Database backup finished          │
└─────────────────────────────────────┘

Per-Session Metrics

• Command history with execution times
• Success/failure rate
• Average response time
• Peak resource usage
• Session uptime

Advanced Features

Activity Patterns

• Learn common patterns to predict completion
• Identify anomalies in session behavior
• Suggest optimizations based on usage

Custom Triggers

// Example trigger configuration
{
  "triggers": [
    {
      "pattern": "Build successful",
      "action": "notify",
      "sound": true
    },
    {
      "pattern": "FATAL ERROR",
      "action": "focus_session",
      "alert": "critical"
    }
  ]
}

Session Health Score

• Overall health rating (0-100)
• Based on error rate, response time, resource usage
• Visual health bar with color coding
• Recommendations for improvement

Implementation Details

Performance Considerations

• Debounce rapid updates
• Use Web Workers for processing
• Lazy load indicators for hidden sessions
• Efficient WebSocket message batching

Accessibility

• Screen reader support for status changes
• Keyboard navigation for notifications
• High contrast mode for indicators
• Alternative text for visual elements

Benefits

• Never miss important events
• Better multi-session management
• Improved debugging capabilities
• Reduced context switching
• Proactive issue detection

Configuration Options

• Enable/disable specific indicators
• Customize notification thresholds
• Set quiet hours for notifications
• Configure indicator update frequency
• Choose notification channels (visual, audio, system)

[vultuk]

I like this, will implement next