feat(website): add seo enhancements with sitemap and structured data

[2214962083]

Summary

• Add sitemap files (main index, English, Chinese) for better search engine indexing
• Add PWA manifest with app icons (192px, 512px, apple-touch-icon)
• Add Open Graph image for social media sharing
• Add JSON-LD structured data components (Organization, WebSite, SoftwareApplication)
• Add FAQ schema markup for rich search results
• Add custom 404 not-found page
• Update robots.txt with sitemap references
• Fix ESLint warnings and improve type annotations

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• My changes generate no new warnings
• Any dependent changes have been merged and published

🤖 Generated with Claude Code

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/nicepkg/vsync/@nicepkg/vsync@15

commit: 3b05a3c

[github-actions]

📦 Package Preview Published

vsync (CLI) has been published to pkg.pr.new for this PR, so reviewers can test changes without waiting for an official npm release.

Preview link: https://pkg.pr.new/nicepkg/vsync/@nicepkg/vsync@3b05a3ca8349eff227935aa3e38cd3c880282cf2

✅ Install

Could not auto-detect a one-line install command — see raw output below.

✅ Quick verification (CLI)

vsync --version
vsync --help

🔎 Raw publish output (for troubleshooting)

Show output

npm warn Unknown project config "public-hoist-pattern". This will stop working in the next major version of npm.
npm warn Unknown project config "shamefully-hoist". This will stop working in the next major version of npm.
npm warn Unknown project config "strict-peer-dependencies". This will stop working in the next major version of npm.
npm warn Unknown project config "auto-install-peers". This will stop working in the next major version of npm.
Unexpected response checking https://pkg.pr.new/nicepkg/vsync/@nicepkg/vsync@3b05a3ca8349eff227935aa3e38cd3c880282cf2 (404)
::group::🔍 Info
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::endgroup::


⚡️ Your npm packages are published.

@nicepkg/vsync:
- sha: ba4183b8d86c25a36e29104e08617c182e843c0f
- publint: https://publint.dev/pkg.pr.new/nicepkg/vsync/@nicepkg/vsync@3b05a3c
- npm: npm i https://pkg.pr.new/nicepkg/vsync/@nicepkg/vsync@3b05a3c

(This comment will be updated on new pushes.)

[github-actions]

🚀 Preview Deployment Ready!

Preview URL: https://c2ecb545.vibe-sync.pages.dev

• Branch: dev
• Commit: 450141c7a82339bbc4fe0b8db101231cfdf615ba

(This comment will be updated on new pushes.)

[github-actions]

🎉 This PR is included in version 1.1.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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