v0.1.12 — Gem simplification

A cleanup release. Gems get simpler to work with, the save screen is smoothed over, and the Camp’s quests are retuned for a better pace.

What changed

• Simplified the gem system, cutting the busywork so gems are easier to understand and use.
• Polished the save screen for a cleaner, clearer experience.
• Rebalanced Camp quests so their demands and their rewards line up better.