Add comprehensive documentation site with VitePress and API docs

[Nebu1eto]

Summary

This PR establishes a complete documentation infrastructure for SheetKit, including a VitePress-based site with bilingual support (English and Korean), automated API documentation generation for both Rust and TypeScript, and CI/CD automation for deployment to GitHub Pages.

Key Changes

• Documentation Site Setup

  • Added VitePress configuration with shared, English, and Korean locale configs
  • Created home pages for both English and Korean with feature highlights
  • Organized documentation structure with guides, API references, and architecture docs
  • Configured navigation, sidebars, and edit links pointing to GitHub

• API Documentation Generation

  • Added TypeDoc configuration to automatically generate TypeScript API docs from source
  • Integrated TypeDoc VitePress theme for consistent styling
  • Configured Rust cargo doc to generate rustdoc and copy to docs directory
  • Created helper function to normalize TypeDoc sidebar links for VitePress

• CI/CD Automation

  • Added GitHub Actions workflow (docs.yml) that:
    • Builds Rust API docs with cargo doc
    • Generates TypeScript API docs with TypeDoc
    • Builds VitePress site
    • Deploys to GitHub Pages automatically on pushes to main
  • Workflow includes proper permissions, concurrency control, and artifact management

• Build Scripts & Configuration

  • Created scripts/build-docs.sh for local documentation building
  • Added npm scripts for documentation development and building
  • Updated .gitignore to exclude generated documentation artifacts
  • Added TypeDoc, VitePress, and related dependencies to package.json

• Documentation Content

  • Organized existing docs into proper directory structure
  • Created bilingual home pages with hero sections and feature highlights
  • Set up sidebar navigation for guides, API references, and TypeScript API docs

Implementation Details

• Documentation is deployed to /sheetkit/ base path on GitHub Pages
• Bilingual support with English (root) and Korean (/ko/) locales
• TypeScript API docs are automatically generated from JSDoc comments
• Rust docs are generated via standard cargo doc tooling
• Local search functionality enabled via VitePress local search provider
• Clean URLs and last updated timestamps configured for better UX

https://claude.ai/code/session_018C8y4AWmJchWf4uXwZAsq6