Follow-up from #949 (toolchain migration to oxc + TypeScript 7 + vite 8).

In #949 the library packages moved to vite 8, and the React/Solid TanStack Start example apps were migrated to vite 8 + nitro 3 and build cleanly. The remaining example apps are still pinned to vite 7 because Start + nitro + their framework plugins didn't build under vite 8 / Rolldown at the time (see commit 2dfd377ca, "pin example apps to vite 7").

Still on vite 7

• examples/ag-ui
• examples/sandbox-cloudflare
• examples/ts-angular-chat
• examples/ts-group-chat
• examples/ts-svelte-chat
• examples/ts-vue-chat
• examples/vanilla-chat

Already on vite 8 + nitro 3 (reference)

sandbox-web, ts-code-mode-web, ts-react-chat, ts-react-media, ts-react-search, ts-solid-chat

Task

For each remaining app, bump vite to ^8.x (and nitro to 3.0.260610-beta where it uses nitro), then verify it builds and dev-serves. Framework plugin compatibility must be checked per app:

• Svelte / Vue / Angular vite-8 plugin support needs verifying — some may not support vite 8 yet and should stay pinned to vite 7 with a comment until upstream ships.
• vanilla-chat and sandbox-cloudflare are simpler and likely straightforward.

Leave any app on vite 7 that genuinely can't build under vite 8 yet, with a // pinned: <framework> plugin lacks vite 8 support note, so the pin is intentional rather than stale.