feat(auth): email de confirmation de changement d'adresse (#73)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/auth/mailer.py

@@ -63,3 +63,8 @@ def send_verification_email(email: str, token: str) -> None:
 def send_reset_email(email: str, token: str) -> None:
     link = f"{_base_url()}/reinitialiser-mot-de-passe?token={token}"
     _send_template(_template_id("BREVO_TEMPLATE_RESET_ID"), email, {"link": link})
+
+
+def send_email_change_email(email: str, token: str) -> None:
+    link = f"{_base_url()}/auth/confirm-email-change?token={token}"
+    _send_template(_template_id("BREVO_TEMPLATE_VERIFY_ID"), email, {"link": link})

tests/auth/test_mailer.py

@@ -61,3 +61,14 @@ def test_send_without_init_raises(monkeypatch):
     monkeypatch.setenv("BREVO_TEMPLATE_VERIFY_ID", "11")
     with pytest.raises(AssertionError):
         mailer.send_verification_email("a@b.c", "TOKEN123")
+
+
+def test_send_email_change_email(fake_client):
+    mailer.send_email_change_email("new@example.fr", "tok123")
+
+    calls = fake_client.transactional_emails.calls
+    assert len(calls) == 1
+    call = calls[0]
+    assert call["template_id"] == 11
+    assert call["to"][0].email == "new@example.fr"
+    assert "/auth/confirm-email-change?token=tok123" in call["params"]["link"]