precedent-regretlisted

# Invert a precedent you regret ```bash uv run <cli> regret \ --topic "<topic>" --chose "<option that was wrong>" \ --because "<the lesson>" --instead "<what you prefer now>" ``` `<cli>` is this package's `precedent.py`; the `precedent` skill says how to locate it. Read that skill first if it is not already loaded. `--because` is the whole point: without the reason, a future session sees only that the option is disfavoured and cannot tell whether the condition that made it wrong applies to the case in front of it. Show the user which decisions this will mark before running it — the scope is every project at once. Nothing is deleted: the decisions keep their original rationales, because a reason that looked good several times is what tells you the lesson was expensive.