[Bug]: Tailwind with --watch not working in dev build

### To Reproduce I have a basically-new app copied from the boilerplate just yesterday. From there: 1. Run `pnpm dev` 2. Edit `pages/content-ui/src/matches/all/App.tsx` to add a tailwind class which hasn't been used elsewhere in the app yet. In my case, `opacity-1` 3. The `opacity-1` styles aren't applied in the app; `opacity-1` doesn't appear in `pages/content-ui/dist/all/index.css` as it should after the tailwind build 4. Restart `pnpm dev` 5. `opacity-1` now appears in `pages/content-ui/dist/all/index.css` ### Expected Behavior `opacity-1` should appear in step (3) after `pnpm dev` automatically rebuilds the app. ### Screenshots _No response_ ### OS macOS ### Browser Chrome ### Node Version 22.19.0 ### Other Necessary Packages Version pnpm v10.11.0 ### Additional Context I added logging to `pages/content-ui/build.mts` and verified `IS_DEV` is set to true. So it should be running `buildTW` with `--watch`, but that's as far as I know how to debug. It's strange to me that we `await buildTW(args)` when I'd expect `--watch` to keep the command running, but I'm not familiar with how Vite handles that. Including my new logs (the ones with timestamps), my log output for for `@extension/content-ui#dev` is this: ``` > @extension/content-ui@0.5.0 dev /Users/alex/projects/moodcatcher/pages/content-ui > tsx build.mts [dotenvx@1.49.0] injecting env (2) from /Users/alex/projects/moodcatcher/packages/env/dist/lib/../../../../.env [2025-09-19T18:09:05.739Z] Building all... [2025-09-19T18:09:05.740Z] IS_DEV: true [2025-09-19T18:09:05.740Z] Config: /Users/alex/projects/moodcatcher/pages/content-ui/tailwind.config.ts [2025-09-19T18:09:05.872Z] Building example... [2025-09-19T18:09:05.872Z] IS_DEV: true [2025-09-19T18:09:05.872Z] Config: /Users/alex/projects/moodcatcher/pages/content-ui/tailwind.config.ts Rebuilding... Rebuilding... Done in 462ms. [2025-09-19T18:09:06.336Z] all Tailwind build completed in 597ms vite v6.3.6 building for development... watching for file changes... Done in 498ms. [2025-09-19T18:09:06.372Z] example Tailwind build completed in 500ms vite v6.3.6 building for development... watching for file changes... [2025-09-19T18:09:06.530Z] all total build completed in 791ms [2025-09-19T18:09:06.530Z] example total build completed in 658ms build started... build started... (x2) ✓ 104 modules transformed. ✓ 104 modules transformed. (x2) ../../dist/content-ui/all.iife.js 0.03 kB │ map: 2,504.72 kB built in 3158ms. [HMR] Connected to dev-server at ws://localhost:8081 ../../dist/content-ui/example.iife.js 0.03 kB │ map: 2,519.32 kB built in 3376ms. [HMR] Connected to dev-server at ws://localhost:8081 ```