feat: draft sign in commit

[azad-technext]

Summary

• This is to check how the new pr setup works.

Changes

• sign up api integrated in front end
• cors error fixed

How to test

• Try create a new account

Screenshots (if UI)

Checklist

• PR title is semantic (e.g., feat: add X, fix: correct Y)
• Linked issue (Fixes #ID)
• Lint passes locally (pnpm lint)
• Tests pass locally (server: pnpm --filter server test)
• Includes migrations or schema changes (if any) documented
• Updated docs/changelog if needed