fix(clinical): red flags, one crisis rule, callback after a crisis, one table of numbers

Clinical review of the questionnaires (ADR-013):
- Red-flag block first in stage 1 (config/instruments/red_flags.yaml); any «Да» stops the
  questionnaire with an acute alert and the help screen of its category.
- One crisis rule: the crisis screen opens at a HIGH C-SSRS risk only; moderate stops and goes
  to a psychiatrist (24 h as a guide), low is a flag with the safety plan. PHQ-9 item 9 with a
  negative screener is a discrepancy flag; without a completed screener it asks the C-SSRS at once.
  config/questionnaire.yaml: cssrs_positive_policy graded (C01).
- Every crisis leaves a callback task for the doctor on duty (post_crisis_call, one per patient)
  and the app asks how the person is the next day, the safety plan one tap away.
- Routing: risk and flags first, scales second; PCL-5 >= 50 no longer means a priority
  appointment (pcl5_severe is moderate on the dashboard too).
- Crisis numbers live only in config/texts/crisis.yaml; texts and the agent prompt refer to them
  via {phone:<key>}. Fixes the children's helpline offered to adults by the chat agent.

Refs #92

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

app/api/fixtures.py

@@ -16,6 +16,7 @@ from app.api.schemas import (
     PatientListItem,
     SeriesPoint,
 )
+from app.core.safety import fill_phones
 from app.integrations.base import Prescription
 
 TZ = ZoneInfo("Europe/Moscow")
@@ -262,7 +263,7 @@ def andrey_card() -> PatientCard:
             "Что помогает: прогулка с собакой, душ",
             "Люди и места: брат Олег, спортзал",
             "Кому звонить: жена, сослуживец Миша",
-            "Специалисты: д-р Смирнова, 8-800-2000-122, 112",
+            fill_phones("Специалисты: д-р Смирнова, {phone:helpline}, 112"),
             "Безопасная среда: ружьё хранится у брата",
         ],
         summary="За 13 дней: приверженность 12/13, эпизод намерения бросить на 5-й день (снят после звонка врача). "