Deck Rotation System

Files
file	combat_card_factory.gd
	Loads data-driven combat card catalogs and resolves discovery unlocks into deck entries.
file	deck_rotation_manager.gd
	Fixed active-hand deck rotation for real-time card combat.
file	spell_loadout_manager.gd
	Reusable unlocked/equipped spell loadout state for card-combat games.

Detailed Description

Maintains active card slots, pinned cards, used-card rotation, spell loadouts, and saveable deck state.