Hunger & Thirst tuning:

- Hunger and thirst now drain more slowly, and on separate schedules instead of both dropping at once — thirst depletes a bit slower than hunger, so you're not juggling both bars constantly
- If a meter does run out, you now get a short grace period before it starts hurting you, and the damage from starving/dehydration hits less often after that too
- Weaker snacks (Worm Round, Mushroom Slice, Apple, Cheese) now restore more hunger, so early-game food is more worth eating