[QA] Signup flow broken — CTA buttons lead to /install, no web registration form

[jarvisstark011010-cpu]

Steps to Reproduce

1. Navigate to https://smshub.dev/
2. Click any "Sign Up" or "Get Started" button
3. Also manually try: /signup, /register, /auth/signup, /auth/register

Expected

A web registration form with email/password fields

Actual

All CTA buttons redirect to /install (app installation page, not registration).
No registration form found at standard signup URLs.

Severity

High

Impact

Users cannot create accounts through the web UI — broken primary conversion funnel.