HF RL Explorer

Add a Find-and-Replace engine

Add a Find-and-Replace engine: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). Our editor needs a working find-and-replace capability that operates on the document behind an editor session. Please add a FindAndReplaceManager and make it reachable from the library's…

The task

Our editor needs a working find-and-replace capability that operates on the document behind an editor session. Please add a `FindAndReplaceManager` and make it reachable from the library's public exports (i.e. it can be imported by name from the package entry point, alongside the other editor utilities).

Part of FineEnvs/MiMo-V2.6-RL-harbor-code.