feat(sidebar): replace YouTube with Xiaohongshu link and icon

[CaliCastle]

Motivation

• Replace the existing YouTube social link in the sidebar with a Xiaohongshu (小红书) link and brand appearance to reflect the requested platform change.
• Use the official-style Xiaohongshu glyph instead of the custom YouTube SVG to keep branding consistent and rely on the existing react-icons package.
• Update the hover accent color to match Xiaohongshu red for consistent UI feedback.

Description

• Replaced the YouTube social entry in components/sidebar.tsx with a Xiaohongshu entry using the provided URL https://xhslink.com/m/8uj8HM0OMpF and label 小红书.
• Added components/icons/ZpBrandXiaohongshuIcon.tsx which renders the SiXiaohongshu glyph from react-icons/si with the repo's clsxm styling.
• Removed the custom components/icons/ZpBrandYouTubeIcon.tsx SVG component and updated imports and the hover color in components/sidebar.tsx to Xiaohongshu red #FF2442.

Testing

• Ran pnpm lint and confirmed there are no ESLint warnings or errors.
• Ran pnpm type-check (tsc --noEmit) and confirmed there are no TypeScript errors.
• No automated UI snapshot tests exist in the project, so visual verification was not run in CI.

---

Codex Task

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
website	Ready	Preview	Mar 22, 2026 3:27pm