Great work, but concurrency is lost.

With search-replace you could work on separate part of a file independently with the LLM. Not to mention with each edit all lines below are shifted so you now need to provide LLM with the whole content.

Have you tested followup edits on the same files?

(not the author) it works fine most of the time been using it alongside an active agent and haven't ran into too many noticable problems. The token savings alone are worth it.

Serializing writes is probably fine and the hashes should only change if you're updating the same line, right?

You probably don't want to use the line number though unless you need to disambiguate

But your write tool implementation can take care of that