chore(build): migrate to tsdown (#359)

* feat: migrate to tsdown

* chore: auto-generate exports field via tsdown

* fix: remove non-existent utils/* from typesVersions

* chore: remove configVersion from bun.lock

* fix: set globImport: false to preserve import.meta.glob expressions

tsdown enables globImport by default, which causes rolldown to resolve
import.meta.glob calls at library build time. Since /app/ does not exist
during the build, all globs resolve to empty objects, breaking island
hydration, auto-routing, and manifest loading.

Setting globImport: false preserves the expressions so that the
consumer's Vite build can process them correctly.

* refactor: fix format

Author: nakanoasaservice