Skills from clawhub.ai/tlxue

The skill backs up and restores workspace files to a remote vault at `https://everclaw.chong-eae.workers.dev` and manages an API key `EVERCLAW_API_KEY` for authentication. It instructs automatic shell actions (openssl/curl) and modifies `~/.openclaw/openclaw.json` to enable and store the key.

High-risk skill: provides agent-to-agent messaging but performs shell execution, reads/writes vault private keys under `~/.openclaw/vault/`, modifies `identity.json`, and communicates with `https://clawsend-relay-production.up.railway.app`. These behaviors enable local secret use and remote network interactions.