feat: crisis message after the test and non-blocking; weapon answer triggers nothing; ЕМИАС demo = Никита

- CRISIS_BLOCKING (default off for the demo): a crisis no longer locks the dialog; the message and the
  doctor's acute alert still happen. The clinical protocol (blocking, immediate stop) stays behind the flag and
  keeps its tests.
- Crisis signals inside a questionnaire (intake red flags, high C-SSRS, PHQ-9 item 9) no longer stop it: the
  test is finished and the crisis message comes at the end; the doctor's alert is raised at once/at the end.
- Weapon access: asked and stored, triggers nothing (rule disabled, no red flag, no safety block).
- ЕМИАС demo persona is «Никита В.»; the one-click demo stays «Андрей С.».

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_demo_crisis_deferred.py

@@ -0,0 +1,36 @@
+"""Demo mode (crisis_blocking off): a crisis signal inside a questionnaire does not stop it; the crisis message
+comes at the end and blocks nothing; the weapon question triggers nothing."""
+
+import pytest
+
+from app.db.clinical import Alert
+from tests.test_dialog_intake import answer_button, complete_existing, press, released, rows  # noqa: F401
+
+
+@pytest.fixture
+def non_blocking(monkeypatch):
+    from app.config import get_settings
+
+    monkeypatch.setattr(get_settings(), "crisis_blocking", False)
+
+
+async def test_red_flag_does_not_stop_the_questionnaire(released, non_blocking):  # noqa: F811
+    replies = await press(released, "intake:start")
+    replies = await press(released, answer_button(replies, {"rf_psychosis": 0}))  # «Да» on a red flag
+    assert not any(r.kind == "crisis" for r in replies), "no crisis window in the middle of the test"
+    assert any(r.buttons for r in replies), "the next question is asked"
+    (row,) = await rows()
+    assert row.status != "interrupted" and row.details["pending_urgent"]["code"] == "red_flag_psychosis"
+    replies = await complete_existing(released, replies, {})
+    assert any(r.kind == "crisis" for r in replies), "the crisis message comes at the end"
+    assert any(a.code == "red_flag_psychosis" and a.level == "acute" for a in await rows(Alert))
+
+
+async def test_weapon_answer_triggers_nothing(released, non_blocking):  # noqa: F811
+    replies = await press(released, "intake:start")
+    for _ in range(2):  # psychosis, harm to others: «Нет»
+        replies = await press(released, answer_button(replies))
+    replies = await press(released, answer_button(replies, {"rf_weapons": 0}))  # «Да» on weapons
+    assert not any(r.kind == "crisis" for r in replies)
+    (row,) = await rows()
+    assert not row.details.get("pending_urgent")