Add a networked TweetClaw audit example

[kriptoburak]

Summary

• Adds TweetClaw as a concrete network-enabled OpenClaw audit target.
• Points readers to the canonical ClawHub, GitHub, and npm surfaces.
• Frames the review around declared endpoints, install path consistency, and approval for high-impact X/Twitter actions.

Checks

• python3 scripts/validate_skills.py
• git diff --check
• ClawHub link: 200
• GitHub link: 200
• npm metadata: npm view @xquik/tweetclaw version returned 1.6.29
• npm web page: automated curl returned 403, consistent with npm bot blocking