Improved preset packing, improvements and bug fixes

V0.4.2
- Updated bag presets to appear more naturally packed, reducing the overly "robotic" look. Feedback is encouraged, and further adjustments are planned.
- Fixed two issues that caused items to fall through bags when closing lids.
- Fixed an issue that allowed players to repeatedly sell floor text after exiting and reloading.
- Fixed a bug where the total items discovered could exceed the current maximum.
- Adjusted the procedures manual: the "Ammo" section no longer incorrectly mentions grenades, which are classified as explosives.
- Reduced the spawn rate of adult toys slightly.
- Reduced the frequency of currency spawns but increased the overall amount per stack.
- Adjusted the scale of currency notes to better match their intended size.
- Modified the scale of soda cans slightly.
- Minor bug fixes.