docs: add TweetClaw OpenClaw workflow example

[kriptoburak]

Summary

• Add a README example for coordinating an X/Twitter launch workflow with OrgX and TweetClaw in the same OpenClaw workspace.
• Keep responsibility boundaries clear: OrgX stores initiatives, decisions, approvals, and follow-up tasks, while TweetClaw handles X/Twitter tool calls.
• Include local secret handling guidance for the Xquik API key.

Duplicate checks

• Searched repo code for TweetClaw, tweetclaw, @xquik/tweetclaw, Xquik-dev/tweetclaw.
• Searched open and closed issues and PRs for the same terms.
• No existing TweetClaw mention or related PR or issue found.

Verification

• npm run typecheck
• npm run test:hooks
• npm run build
• npm pack --dry-run --json
• git diff --check

Link checks

• Verified TweetClaw GitHub, ClawHub listing, xquik.com, dashboard.xquik.com, OrgX site, OrgX docs, and OrgX GitHub resolve.
• npmjs.com package page returned a bot-protection 403 through curl, but npm registry metadata resolved @xquik/tweetclaw 1.6.31 with the canonical GitHub repository.