Major updates

• The Tools & Equipment tab is now fully wired into the UI 

• Instant UI audio is in no noticeable delay on feedback sounds.

• CRT effects are back, updated to work with Bevy 0.17.

• Added resolution switching, so display settings are customizable.

• OS detection + MacBook Air tuning now happens automatically for better performance.

Under the hood

• Upgrade cost display caching fixes the flickering issue.