The login page now shows the service name and a "Sign in with MCIAS"
button instead of immediately redirecting to MCIAS. This lets the user
know what service they are logging into before the redirect.
- GET /login renders the landing page with SSO button
- GET /sso/redirect initiates the actual SSO redirect
- Non-SSO login form still works when SSO is not configured
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Kyle Isom
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