memem-minelisted

Opt in to memem mining. In v2.1.0+ mining is event-triggered: it fires on every Claude Code Stop event when the opt-in marker exists. There is no daemon to start. 1. Create the opt-in marker: ```bash mkdir -p ~/.memem && touch ~/.memem/.miner-opted-in ``` 2. Tell the user: - Mining is now active — every Stop event spawns a detached `mine_delta` subprocess that extracts memories from new turns since the last invocation - Hook overhead is ~50ms; the Haiku call runs in background - Run `/memem-status` to check Stop-hook registration, opt-in marker, and last mine run - Safety net: SessionStart fires a stale-session sweep for any JSONLs > 10 min old not yet in `~/.memem/.mined_sessions` (catches sessions where Stop never fired) - To opt out: `rm ~/.memem/.miner-opted-in` (no daemon to stop — the hook just no-ops) For backfilling pre-existing sessions, use `/memem-mine-history`.