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_rules.py

@@ -125,8 +125,9 @@ def test_cssrs_levels() -> None:
 @pytest.mark.parametrize(
     ("weapon", "cssrs", "item9", "fires"),
     [
-        (True, "moderate", None, True),
-        (True, None, 1, True),
+        # Team decision 2026-10-04: weapon access triggers nothing (rule disabled in config/rules.yaml).
+        (True, "moderate", None, False),
+        (True, None, 1, False),
         (True, "low", 0, False),
         (False, "high", 2, False),
         (None, "moderate", None, False),