On Windows, `tsx watch` can hang when running under `concurrently` due
to stdin handling conflicts (see [privatenumber/tsx#623][]). Adding the
`--raw` flag to `concurrently` avoids this by preventing stdin
interception.
Since `--raw` mode disables concurrently's automatic output prefixing, a
custom Vite logger is added to prefix messages with `[vite]` so users
can still distinguish which process produced each line of output.
[privatenumber/tsx#623]: https://github.com/privatenumber/tsx/issues/623
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
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