Add Xquik social data skill and repair documentation links

[kriptoburak]

Summary

• Add the xquik-social-data skill for REST, MCP, SDK, extraction, webhook, monitoring, and confirmation-gated X workflows.
• Add English and Chinese skill docs plus localized collection entries.
• Add a Claude Code marketplace pack using the repository's current per-skill source contract.
• Update MCP setup guidance for OAuth 2.1 or secret-managed API keys.
• Add the exact independent-service and X Corp trademark disclosure.
• Repair 5 broken Claude Design prompt links across the collection docs.

Fit And Duplicate Checks

• Searched the repository, open and closed pull requests, and issues for Xquik duplicates before submission.
• Kept the agent-facing skill focused at 115 lines and the frontmatter limited to name and trigger-focused description.
• Rebased onto current main, including the latest marketplace source-path corrections.

Independent Repository Fix

Five English, Chinese, and Japanese documentation links pointed at nonexistent dist/prompt/claude-design-system-prompt.md. The repository stores the file at dist/prompts/claude-design-system-prompt.md, so all 5 links now resolve to the tracked source.

Validation

• Skill Creator quick_validate.py
• npm run validate
• npm run readme:check
• Marketplace source and manifest contract assertions
• Exact disclosure checks across all 6 public Xquik docs and skill files
• All 5 repaired Claude Design link assertions
• Live HTTP checks for the Xquik icon, docs, API reference, MCP guide, and official repository
• Prohibited-dash and credential-shape scans
• git diff --check

GitHub currently marks the fork workflow action_required without creating a job. It awaits maintainer approval to run; the identical validation command passes locally.

[kriptoburak]

Repair published in signed commit 518db09 after rebuilding onto current main.

The marketplace pack follows the repository current per-skill source layout, MCP setup uses OAuth 2.1 or secret-managed API-key guidance, every public Xquik document includes the required disclosure, and generated README release links are current.

The PR also fixes an independent repository defect: 5 Claude Design links used nonexistent dist/prompt; all now target the tracked dist/prompts directory.

Validation passed with Skill Creator, npm run validate, npm run readme:check, marketplace and manifest assertions, live public-link checks, prohibited-dash and credential-shape scans, and git diff --check.

GitHub currently awaits maintainer approval for the fork workflow. The identical validation command passes locally.