Upgrade Vite and Marked

README.md

@@ -43,6 +43,10 @@ validate generated pages, and `bun run build` to create the production site in
 Edit content in `notes/` and `posts/`. Keep generated files in `.generated/`
 and `dist/` out of version control.
 
+The bundled Iosevka file is a subset of the Fontsource package. After updating
+`@fontsource/iosevka`, regenerate it with `sh scripts/subset-iosevka.sh` (requires
+`uv`); normal installs and builds do not require `uv`.
+
 `mirror/` contains local copies of API references (`docs.gl`, Microsoft SDK
 API, and Win32). It is about 906 MB, is not used by the generator or build,
 and is ignored by Git. Keep it locally for reference or move it outside the