Add advanced interactive features to the Folio CLI:
- Position-specific analysis with risk metrics and simulations
- Ticker filtering capabilities across commands
- State management between commands for workflow continuity
- Parameter customization with presets for frequent analyses
- Detailed position breakdowns with risk metrics
Also includes:
- Make target for easy startup (make focli)
- Improved help documentation
- User-centric README and release announcement
- Bug fixes for simulation calculations
Completes all Phase 2 tasks from the MVP plan.
