Update config for Vite v8

[brianhelba]

This also updates the TypeScript config from upstream create-vue-app, so new type errors are detected.

Note, for better consistency with other tools, the npm commands are now:

• npm run serve
• npm run test

Finally, this adds a build-time sanity check (since TypeScript alone can't actually guarantee that environment variables are set), to prevent regressions like #463. Now that VITE_APP_API_ROOT is always defined the Vite config for server.proxy can be removed (which only affects the development server).

[BryonLewis]

More like comments I want feedback on than changes.

• Questions about using the vite standard (npm run dev, npm run preview instead of older vue-cli-service commands).
• Configuration changes to make it easier to do local dev and testing of the client outside of docker without having to specify a .env file or env variables inline. This may be a selfish request for myself to make debugging things a bit easier.

[cloudflare-workers-and-pages]

Deploying bats-ai with    Cloudflare Pages

Latest commit:	d2cbfaa
Status:	✅  Deploy successful!
Preview URL:	https://210ca174.bats-ai.pages.dev
Branch Preview URL:	https://vite-8.bats-ai.pages.dev

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Responded to feedback.

[brianhelba]

@BryonLewis Responded to your feedback, adding a preview config block and restoring the dev and preview script names. I also rebased.

[BryonLewis]

Looks good.

Checked that I can still source the environment file and npm run build and npm run preview to test for any vite/maplibre issues easily without modifying additional configs.