Right now grievances are fixed — they live in the agent's .md file and persist as a personality constant throughout the session. update_mood() shifts emotional state tick by tick, but it doesn't rewrite the underlying grievance.

Your question is actually pointing at the most interesting unsolved problem in the project. A grievance resolution arc — where the .md file itself gets rewritten mid-simulation as the agent "processes" something — would make long sessions feel genuinely different from short ones. It's on the roadmap but I haven't built it yet.

The risk is it could make agents feel too therapeutic. Real people carry grievances for years. Not sure the right answer yet.