Register: no password checklist, and raw Keycloak error copy

[saqibmanan]

What: There's no live "Password must contain" checklist. An empty password shows four stacked Keycloak lines (three policy errors + "Please specify this field."). An existing email shows "Email already exists." with no "Sign in instead" link.
Why it matters: The design's main register-form affordances are missing.
Fix: not fixed.

[saqibmanan]

Repro (password policy: length 8, 1 uppercase, 1 digit)

• Focus/type in Password → no requirements list. Design: live "Password must contain: At least 8 characters / One uppercase letter / One number".
• Empty submit → Password shows 4 lines: "Invalid password: minimum length 8. / … at least 1 numerical digits. / … at least 1 upper case characters. / Please specify this field." Design: "Password is required."
• Weak password → the 3 policy lines. Design: "Password does not meet all requirements."
• Mismatch → "Password confirmation doesn't match." Design: "Passwords do not match."
• Existing email → "Email already exists." Design: "An account already exists with this email. Sign in instead." (link)