Type Alias DynSteppedTask 

pub type DynSteppedTask<TState, TResourceKey = Cow<'static, str>> = dyn SteppedTask<TState, TResourceKey, Cursor = Vec<u8>> + Send + Sync;

Type alias for a dynamic SteppedTask trait object with a Vec<u8> cursor.

Pins Cursor = Vec<u8> for object safety — the cursor is an opaque byte buffer.