feat: Add tech-debt-tracker POWERFUL-tier skill
Complete technical debt management system with three interconnected tools:
• debt_scanner.py - AST-based Python analysis + regex patterns for multi-language debt detection
• debt_prioritizer.py - Multiple prioritization frameworks (CoD, WSJF, RICE) with sprint planning
• debt_dashboard.py - Historical trend analysis, health scoring, and executive reporting
Features:
- 15+ debt types detected (complexity, duplicates, security, architecture, etc.)
- Business impact analysis with ROI calculations
- Health scoring (0-100) with trend forecasting
- Executive and engineering stakeholder reports
- Zero external dependencies, stdlib only
- Comprehensive documentation and sample data
Addresses: tech debt identification, prioritization, tracking, and stakeholder communication
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