- loadout_manager_simple: use ArmorSelectorDialog (not ArmorSelectionDialog)
- weapon_selector: handle null/invalid decay/ammo values from API
- Add safe Decimal conversion with InvalidOperation handling
- Filter out weapons with invalid data before populating list
- New LoadoutManagerSimple with clean cost-focused design
- LoadoutConfig now stores only: cost_per_shot/hit/heal + display names
- Legacy format support for backward compatibility
- Simplified LoadoutSelectionDialog with clear cost preview
- Updated MainWindow to use new simplified structure
- Removed 3 overlapping armor systems, replaced with single decay value
- JSON serialization is now simple and reliable
Key principle: Only store what's needed for cost tracking.