State storage

DataStorage is the codec for runtime state, not a standalone data pack registry. Ability types declare the state they need; the host creates, ticks and persists it, and calls markDirty after changes.

Type	Purpose
saturn:empty	Provides an implementation that performs no additional behaviour.
saturn:cooldown	Stores the cooldown start time and duration.
saturn:charges	Stores the maximum charges, the recharge interval and the charges currently remaining.
saturn:toggle	Stores a mutable on/off state.
saturn:timer	Stores the duration and the tick at which the timer ends.
saturn:resource	Stores a resource reference and the corresponding amount; an object without values only declares the storage type.
saturn:target_lock	Stores the locked target and the usable distance.
saturn:container	Stores the contents of runtime item slots.
saturn:cast_deadline	Stores the time at which casting ends.
saturn:channel_pulse	Stores the time of the next channelled execution.
saturn:active_state	Stores a runtime activation flag.
saturn:entry_began	Stores whether a timeline node has already begun.
saturn:idle_countdown	Stores the remaining ticks of a wait node.
saturn:wait_countdown	Stores the remaining ticks of a condition wait node.