Add first and last name fields to signup form

[marccsaada]

Closes #130

Overview

Added "Prénom" and "Nom" fields to the signup form, wired into the existing update/clientErrors validation pattern. Also extended SignupInput/validateSignup to validate the new fields, and updated actions.ts so the server action validates and passes firstName/lastName through the same shared input object (previously it read them separately without validation).

Testing

Manual testing in the browser at /signup:

• Verified Prénom/Nom fields display above email, styled consistently with existing inputs
• Verified validation errors show under each field when left empty
• Verified a full signup saves firstName/lastName correctly to the users table
• Verified layout on mobile and desktop

Unit testing:

• Updated validation.test.ts to cover the new required fields
• Ran npm run test, npx tsc --noEmit, and npm run lint , all pass

Screenshots / Screencasts

Checklist

• Code is neat, readable, and works
• Code is commented where appropriate and well-documented
• Commit messages follow our guidelines
• Issue number is linked
• Branch is linked
• Reviewers are assigned (one of your tech leads)

Notes

None.

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Project	Deployment	Actions	Updated (UTC)
canopee-project	Ready	Preview	Aug 23, 2026 5:51pm