Training, endurance, stable & economy tweaks

1. Softer horse training — check horse overview (less "grind by abusing" your mount).
2. Endurance training fix — gains were under-rewarding; patched in Daybreak-style updates.
3. Stabled injury fix — horses should rest safely in stable; lingering injury states cleared after full rest.
4. Trader pricing — trained horses sell for more than flat penny payouts.

Guide pages reviewed for this entry: Beginner, Stats, Breeding / Stable, FAQ