f1d1b95a8f
- Rename stage-2/intro.md to stage-2/index.md for all languages - Rename stage-3/intro.md to stage-3/index.md for all languages - Rename appendix/intro.md to appendix/index.md for all languages - Update config.mjs navigation links to use /stage-2/ and /stage-3/ instead of /stage-2/intro and /stage-3/intro - This follows VitePress best practice where index.md is the default page for a directory