feat: Add GitLab Value Stream Analytics (VSA) Component

📊 Value Stream Analytics Component

This MR adds a comprehensive GitLab VSA component for DORA metrics tracking and workflow analytics.

✨ Features

DORA Metrics Collection

• ✅ Deployment Frequency (deploys/day)
• ✅ Lead Time for Changes (hours)
• ✅ Change Failure Rate (%)
• ✅ Time to Restore Service (hours)
• ✅ Performance classification (Elite/High/Medium/Low)

Custom Value Stream Stages

• 6 pre-configured workflow templates
• Event-based stage definitions
• Label-based tracking
• Median duration calculations
• Target threshold comparisons

Interactive Dashboards

• Modern HTML5 + Chart.js visualizations
• Real-time metric cards with trends
• Mobile-responsive design
• GitLab Pages integration

API Integration

• GraphQL client (Node.js)
• REST API client (Bash)
• JSON export capabilities

📦 Component Structure

ci/components/vsa/
├── component.yml (764 lines)
├── custom-stages.yml (314 lines)
├── README.md (366 lines)
├── QUICK_START.md (187 lines)
├── scripts/
│   ├── query-vsa.js (234 lines)
│   └── dora-metrics-api.sh (344 lines)
└── examples/
    └── full-vsa-integration.yml (719 lines)

Total: ~3,000 lines of production code

🚀 Quick Start

include:
  - component: gitlab.bluefly.io/llm/gitlab_components/vsa@v0.1.0
    inputs:
      project_name: 'My Project'
      enable_dora_metrics: true
      enable_dashboard: true

🔗 Integration

• ✅ Compatible with workflow/golden component
• ✅ Works with existing reporting/unified-reports
• ✅ Supports scheduled pipelines
• ✅ External system exports (Prometheus, S3, Slack)

📚 Documentation

• Full README with examples
• Quick start guide (5-minute setup)
• Integration examples
• Implementation summary (VSA_IMPLEMENTATION_SUMMARY.md)

✅ Testing Checklist

• Component YAML syntax validated
• Scripts are executable
• Documentation complete
• Integration test in CI pipeline
• Dashboard generation test
• API scripts test

📈 Next Steps After Merge

1. Test component in development environment
2. Set up scheduled pipeline for daily metrics
3. Configure GitLab Pages for dashboard
4. Add to golden workflow template

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🤖 Generated with Claude Code

Co-Authored-By: Claude noreply@anthropic.com