- Replace VitePress with Fumadocs + Next.js for documentation site
- Configure i18n (English + 简体中文) with language switcher
- Migrate all 17 guide documents to MDX format with updated content
- Add ocean theme, GitHub/Discord/QQ social links
- Update GitHub Actions workflow for Next.js static export
- Update .gitignore for .next, out, .source directories
Refactor all database drivers, query execution, schema operations, and
business logic into a shared `dbx-core` crate. The Tauri desktop app
becomes a thin shell delegating to dbx-core, enabling future web and
CLI frontends to reuse the same core.
t8y2