feat(web): two-stage questionnaires, screening result and diary by result

- Sign-in: centred ЕМИАС card without the sidebar; anonymous entry asks «Депрессия / ПТСР».
- Stage 1 is the same for everyone and follows the fixed order of the MVP questionnaire:
  PHQ-2 → trauma filter/TSQ → RUS-AUDIT-S → C-SSRS → context; stage 2 only where stage 1
  is positive. Starts without a profile.
- After stage 1 the patient sees a preliminary result (screening, not a diagnosis), stored
  with the record; it switches on the diary modules (depression / PTSD).
- Stage 2 diary: morning (sleep, sleep quality, alcohol) and evening (mood, medication,
  3 PHQ-9 items in rotation, short PCL-5); C-SSRS since last contact only under risk;
  flags on weekly means against the personal norm; scheduled full scales with change
  (remission, response, worsening).
- Questionnaire log: GET /me/{token}/results and the «Мои результаты» screen.
- Questionnaires centred without the sidebar and without scale names; «Продолжить позже»
  goes home; confirmations are toasts; free-text comments are optional.
- Demo policy config/questionnaire_demo.yaml (INTAKE_DEMO only, not a clinical approval).

ADR-012.

Refs #77

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

config/intake_runtime.yaml

@@ -1,17 +1,27 @@
-version: intake-v2-2026-10-03
+version: intake-v3-2026-10-04
 enabled: false
 approval: null
 # Release decisions cover texts, diary anchors/thresholds, schedules and contact readiness.
 content_review: null
 contact_review: null
 timezone: Europe/Moscow
-daily_hour: 19
-mood_baseline_days: 7
-mood_bad_days: 3
-mood_drop: 3
-sleep_bad_days: 3
+# Stage 2 diary («Этап 2: наблюдение после диагноза»): morning block after waking, evening block at 20:00.
+morning_hour: 8
+evening_hour: 20
+# Personal norm = the first `norm_days` of observation; compared with the mean of the last `week_days`.
+# Flag numbers are the team's candidates (PDF «Этап 2», p.4) — agree with the doctor.
+norm_days: 14
+week_days: 7
+min_norm_values: 7
+min_week_values: 4
+mood_drop: 3                 # weekly mood mean fell ≥3 below the norm → unscheduled PHQ-9
+depression_item_rise: 1.0    # weekly mean of a PHQ-9 diary item rose ≥1 above its norm → PHQ-9 earlier
+ptsd_sum_rise: 3.0           # weekly mean of the 4-item PCL-5 sum rose ≥3 above the norm → PCL-5 earlier
+sleep_bad_days: 3            # <4 h or «очень плохо» three nights in a row → flag to the doctor
 sleep_hours_below: 4
-nightmares_at: 3
+alcohol_heavy_portions: 6    # ≥6 standard drinks a day = heavy day (volumes of RUS-AUDIT item 3)
+alcohol_heavy_days: 2        # heavy days in a week → full RUS-AUDIT
+adherence_below: 0.8         # share of days with medication taken over a week
 missed_medication_days: 3
 high_risk_silence_days: 2
 medication_days: [7, 14, 28]