Set `session.resetByType.group` in openclaw.json to auto-reset group sessions after idle periods: ```json {"session": {"resetByType": {"group": {"mode": "idle", "idleMinutes": 120}}}} ``` Alternatively use `"mode": "daily"` with `"atHour": 6` for predictable daily resets. Also enable session maintenance to prune old sessions: ```json {"session": {"maintenance": {"mode": "enforce", "pruneAfter": "14d", "maxEntries": 50, "maxDiskBytes": "200mb"}}} ``` Combined with lowering `compaction.reserveTokensFloor` from default 20K (or custom high values) to ~35K so compaction triggers sooner on long sessions.

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