Session harvest

Reviews a conversation for what's worth persisting before it's compacted or ends, and makes sure each candidate lands in the right place — not just memory by default because memory is the easiest tool at hand. Primary invocation is explicit (/session-harvest); the description above also matches natural-language phrasing, but explicit invocation is the one to rely on — description matching for something this consequential (it writes files) has been reported unreliable by prior art (see references/rationale.md).

On-demand only. Installing hooks, wiring settings.json, or running on any schedule is explicitly out of scope — that's a different, heavier tool (see references/rationale.md for the prior art considered and rejected).

What this skill reads, runs and writes