Build an RPG-lite turn-based demo (single file).
Theme: pixel-inspired UI with minimal art.
Loop: choose actions (Attack/Guard/Skill/Rest) vs enemies.
Progression: 3 encounters + final boss, loot between fights.
Stats: HP, mana, attack, defense; show tooltips.
UI: battle log, player stats, enemy HP, loot summary.
Controls: click action buttons; R restart.