- Add EquipmentEditorDialog for per-category attachments, skins, and custom names
- Add Wardrobe component with soldier image and clickable equipment slots
- Add WardrobePanel with loadout selector and current equipment display
- Add WardrobeSlotPicker dialog for equipping items from locker
- Add equip/unequip loadout functionality with equipped badge
- Add equipment schema to LockerStorages (attachments, skin, customName)
- Add wardrobe slot layout with hotspot positions for each equipment type
- Add locker:item-attach, locker:item-detach, locker:item-skin event types
- Update LoadoutCard to show equipped status and equipment list
- Update LoadoutsPanel to pass ownedItems for equipment display
- GridItem type and GridDimensions helper type
- getItemFootprint: effective size accounting for rotation
- getOccupiedCells: list of "x,y" cell keys
- isValidPlacement: overlap and bounds checking
- findEmptySpot: first-fit scan for available placement
- autoArrangeItems: pack items into grid
- getGridOccupancy: used/total cell counts
