fix: bump major versions of dependencies

[alexmatson-da]

major changes:

1. TS v6: clean up a few tsconfigs
2. Vite v8: the new Vite switches to Rolldown as its bundler, with some side effects:
   • it is incompatible with Yarn PnP, so switched to nodeLinker: pnpm mode
   • Rolldown gets confused if you import a type without the type specifier, so enable verbatimModuleSyntax in tsconfig to enforce it consistently