OpenClaw quickstart

1. Preview: openclaw-mem install --harness openclaw --root . --dry-run --json.
2. Install: openclaw-mem install --harness openclaw --root . --mode write --verify --json.
3. Reference .openclaw-mem/agent-memory-card.md from the harness instruction surface.
4. Diagnose later with openclaw-mem doctor --harness openclaw --root . --json.

The managed card uses environment variables for gateway credentials; no token is written.