Or git notes.

Commit hook > Background agent summarizes (in a data structure) the work that went into the commit > saves to a note

Built similar (with a better name) a week ago at a hackathon: https://github.com/eqtylab/y

Exactly. I don't want to wade through a whole session log just to get to reasoning, and more importantly, I don't want to taint my current agent context with a bunch of old context.

Context management is still an important human skill in working with an agent, and this makes it harder.

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