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>

app/dialog/engine.py

@@ -37,6 +37,7 @@ from weakref import WeakValueDictionary
 from sqlalchemy.exc import InterfaceError, OperationalError
 from sqlalchemy.ext.asyncio import AsyncSession
 
+from app.config import get_settings
 from app.core import clock, safety
 from app.core.intake_runtime import intake_enabled
 from app.core.privacy import scrub
@@ -68,6 +69,9 @@ from app.services.contracts import MonitoringService, get_monitoring
 log = logging.getLogger(__name__)
 
 LAST_PROMPT = "last_prompt"
+DEFERRED_CRISIS = "deferred_crisis"
+QUESTIONNAIRE_PREFIXES = ("scale.", "veteran.onboarding.", "intake.")
+DEFERRABLE_KINDS = frozenset({"crisis", "safety_plan"})
 MEDICINE_WORDS = re.compile(
     r"(лекарств|таблет|препарат|сертралин|пароксетин|флуоксетин|эсциталопрам|антидепрессант|побочк)", re.I
 )
@@ -145,6 +149,8 @@ class Engine:
 
         await self._apply(ctx, await self._start_pending(ctx), run)
 
+        self._defer_crisis_messages(ctx, event, run)
+
         if _consented(ctx):
             for reply in run.replies:
                 # Outgoing texts may quote the safety plan (names of relatives) — scrub before storing too.
@@ -177,6 +183,21 @@ class Engine:
         )
         return run.replies
 
+    def _defer_crisis_messages(self, ctx: Ctx, event: Event, run: _Run) -> None:
+        """Crisis messages triggered by test answers wait until the questionnaire is over (team decision
+        2026-10-04: let the patient finish the test, then show the crisis message; it blocks nothing). The doctor's
+        alert is not delayed — only the patient-facing message. A typed acute message is never deferred."""
+        if get_settings().crisis_blocking:
+            return  # clinical protocol: the crisis takes over immediately
+        if event.type == "button" and ctx.state.startswith(QUESTIONNAIRE_PREFIXES):
+            held = [r for r in run.replies if r.kind in DEFERRABLE_KINDS]
+            if held:
+                run.replies[:] = [r for r in run.replies if r.kind not in DEFERRABLE_KINDS]
+                ctx.data[DEFERRED_CRISIS] = [*(ctx.data.get(DEFERRED_CRISIS) or []), *(r.model_dump() for r in held)]
+            return
+        if ctx.data.get(DEFERRED_CRISIS) and not ctx.state.startswith(QUESTIONNAIRE_PREFIXES):
+            run.replies.extend(Reply.model_validate(r) for r in ctx.data.pop(DEFERRED_CRISIS))
+
     def _abandoned(self, ctx: Ctx) -> bool:
         """The current question step was left unanswered longer than `abandon_after_hours` (app.core.clock)."""
         if intake_enabled() or not _consented(ctx) or ctx.state in RESTING_STATES or crisis_open(ctx.data):