feat: add Open Library page with book catalog and borrowing system

[xiaohei644]

• Add /library page with book grid, category filter and search
• Add /library/[id] book detail page with borrowing info and guide
• Add 12 open-source/tech books with borrowing status
• Add Book type definitions in types/library.ts
• Add 35 i18n keys for zh-CN, en-US, zh-TW
• Add Open Library link to MainNavigator

Resolves #15

Checklist（清单）:

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Closes #XXXXX

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⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

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Run ID: 07b9a5f1-0317-43a7-959e-6484f1415f9e

📥 Commits

Reviewing files that changed from the base of the PR and between 58126ca and d64cd6f.

⛔ Files ignored due to path filters (4)

• translation/en-US.ts is excluded by none and included by none
• translation/zh-CN.ts is excluded by none and included by none
• translation/zh-TW.ts is excluded by none and included by none
• types/library.ts is excluded by none and included by none

📒 Files selected for processing (4)

• components/Navigator/MainNavigator.tsx
• pages/library/[id].tsx
• pages/library/books.ts
• pages/library/index.tsx

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