v0.1.8 - Enhanced Workflow and Stability

Added

• Single-signal research workflow template notebook (notebooks/06_single_signal_template.ipynb) with 8588 lines
  • Complete end-to-end workflow for individual signal development and validation
  • Integrated suitability evaluation, backtesting, and performance analysis
  • Self-contained template for rapid signal idea iteration
• Jupyter notebook stability settings and troubleshooting guide (NOTEBOOK_TROUBLESHOOTING.md)
  • Solutions for kernel crashes and execution issues
  • Environment variable configuration for Windows stability
  • Best practices for notebook development workflow

Changed

• Refactored performance metrics consolidation into evaluation layer
  • Moved backtest/metrics.py → evaluation/performance/metrics.py
  • Enhanced metrics module with comprehensive risk-adjusted calculations
  • Unified performance analysis through evaluation layer
• Implemented rolling window stability analysis with dual-metric scoring
  • Enhanced PerformanceAnalyzer with temporal stability assessment
  • Added rolling Sharpe ratio tracking for regime consistency
  • Improved performance reporting with stability diagnostics
• Aligned structure and formatting across notebooks 01-05
  • Standardized markdown headers and cell organization
  • Consistent workflow documentation and prerequisite tracking
  • Improved table formatting with left-aligned display
• Updated documentation for accuracy across design docs and notebooks
  • Corrected signal registry usage examples
  • Fixed performance evaluation design documentation
  • Enhanced signal suitability design document (renamed from signal_suitability_evaluation.md)

Fixed

• Performance metrics now correctly compute extended risk metrics (profit factor, tail ratio, Calmar)
• Suitability evaluation tests updated with correct configuration patterns
• Notebook execution stability improved with proper error handling