Persist sublattice metadata atomically and track the root dispatch

Persist sublattice metadata atomically and track the root dispatch: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). When the dispatcher runs a workflow that contains sublattices, each sublattice is itself dispatched and gets its own lattice record in the results…