Remove unused IAM templates (change_password_required, user_create) - no route renders them

app/modules/core/iam/templates/change_password_required.html

@@ -1 +0,0 @@
-{% extends "ui/templates/base/layout.html" %}{% block content %}<div class="mx-auto max-w-lg rounded-3xl bg-white p-6 shadow-soft"><h2 class="text-xl font-semibold">Set a New Password</h2><p class="mt-1 text-sm text-slate-500">Your account requires a password update before proceeding.</p><form method="post" class="mt-6 space-y-4"><input type="hidden" name="csrf_token" value="{{ csrf_token }}" /><div><label class="mb-2 block text-sm font-medium text-slate-700">New Password</label><input type="password" name="password" class="w-full rounded-2xl border border-slate-300 px-4 py-2.5 text-sm" required /></div><button class="rounded-xl bg-brand-600 px-4 py-2.5 text-sm font-medium text-white">Save password</button></form></div>{% endblock %}

app/modules/core/iam/templates/user_create.html

@@ -1,5 +0,0 @@
-{% extends "ui/templates/base/layout.html" %}
-{% block content %}
-  <h1 class="text-2xl font-semibold">Create User</h1>
-  <p class="text-slate-600 mt-1">User creation UI will be expanded in the next hardening step.</p>
-{% endblock %}