Document TweetClaw X/Twitter companion workflow

[kriptoburak]

Adds a narrow companion workflow under the existing X (Twitter) Web Data section. It explains when Bright Data's structured X post/profile URL tools fit and when TweetClaw is the better OpenClaw companion for X/Twitter-specific search, automation, or visible actions.

What changed:

• Adds TweetClaw install guidance.
• Documents the split between Bright Data known-URL structured data and TweetClaw workflows such as tweet search, reply search, follower export, user lookup, media workflows, monitors, webhooks, DMs, giveaway draws, and approval-gated visible actions.

Validation:

• git diff --check
• staged added-line sensitive-term scan
• npm run typecheck
• npm test

Note:

• npm ci completed but reported existing dependency audit findings: 11 moderate, 6 high, and 2 critical. This PR is docs-only and does not change dependencies.