I want Badger transactions to provide an exact-key historical iterator with the public Go method func (txn…

I want Badger transactions to provide an exact-key historical iterator with the public Go method func (txn…: a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). I want Badger transactions to provide an exact-key historical iterator with the public Go method func (txn Txn)…

The task

I want Badger transactions to provide an exact-key historical iterator with the public Go method func (txn Txn) NewKeyIterator(key []byte, opt badger.IteratorOptions) badger.Iterator. I should be able to create it inside a transaction, call the returned iterator's existing…

Part of XiaomiMiMo/MiMo-V2.6-RL-oss.