Adds more baudrate options

[cgreening]

Summary

Adds additional baud rates.

Motivation & Context

Closes #9

Changes

Adds more baud rates to the ConnectModal and the useSerial components.

Screenshots / Demos (if UI)

How to Test

1 Click the connect button
2 Try one of the new baud rates

Checklist

• I ran npm run lint and fixed any issues
• I ran npm run typecheck (TypeScript) with no errors
• I ran npm test and tests pass
• I ran npm run test:coverage if code paths changed significantly
• I added/updated tests where appropriate
• I updated docs/README if needed
• No breaking changes without clear migration notes

Additional Notes

At some point we might want to have a free text for this field.

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	web-serial-plotter	688628b	Commit Preview URL Branch Preview URL	Sep 19 2025, 09:42 PM

[Copilot]

Pull Request Overview

This PR adds additional lower baud rate options (300, 600, 1200, 2400, 4800) to the serial communication interface, expanding the range of supported connection speeds for legacy devices or specific hardware requirements.

• Extends the BaudRate type definition to include 5 additional lower baud rates
• Updates the ConnectModal component to display the new baud rate options in the UI

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/hooks/useSerial.ts	Adds lower baud rates (300-4800) to the BaudRate type definition
src/components/ConnectModal.tsx	Updates the BAUD_RATES array to include the new lower baud rate options

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