{% if applied %}
Identity registered! INSERT INTO user_registrations (username, …) IF NOT EXISTS — applied. Welcome, {{ username }}.
{% else %}
🚫 Username taken! Doppel-9 already controls this identity.
IF NOT EXISTS rejected — {{ username }} is already registered:
{% if existing %}
{% for k, v in existing.items() %}
{{ k }}
{{ v }}
{% endfor %}
{% endif %}
{% endif %}