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>

tests/test_intake_runtime.py

@@ -56,28 +56,51 @@ def test_medication_schedule_overlapping_and_delayed_completion():
     )
 
 
-def test_diary_consecutive_days_and_baseline_do_not_include_bad_window():
-    today = date(2026, 10, 3)
-    history = {today - timedelta(days=i): {"mood": 8} for i in range(3, 10)}
-    for i in range(3):
-        history[today - timedelta(days=i)] = {"mood": 5, "sleep_hours": 3.9, "medication": "none"}
-    assert set(diary_flags(history, today)) == {"phq9_due_mood", "sleep_review", "medication_contact"}
-    history[today - timedelta(days=1)] = {}
-    assert diary_flags(history, today) == ()
-    history[today]["death_thoughts"] = 1
-    assert diary_flags(history, today) == ("suicide_assessment_now",)
+def norm_and_week(norm: dict, week: dict, today=date(2026, 10, 30)):
+    """14 days of personal norm starting 27 days ago, then the last 7 days with other values."""
+    start = today - timedelta(days=27)
+    history = {start + timedelta(days=i): dict(norm) for i in range(14)}
+    history.update({today - timedelta(days=i): dict(week) for i in range(7)})
+    return history, today
 
 
-def test_sleep_alternation_counts_but_threshold_is_strict():
+def test_weekly_mood_against_personal_norm():
+    history, today = norm_and_week({"mood": 8}, {"mood": 5})
+    assert "phq9_due_mood" in diary_flags(history, today)
+    history, today = norm_and_week({"mood": 8}, {"mood": 6})
+    assert "phq9_due_mood" not in diary_flags(history, today)
+    # Inside the norm window there is no trend yet.
+    early = {date(2026, 10, 1) + timedelta(days=i): {"mood": 9 if i < 3 else 1} for i in range(10)}
+    assert "phq9_due_mood" not in diary_flags(early, date(2026, 10, 10))
+
+
+def test_module_trends_bring_full_scales_forward():
+    ptsd = {"dpcl_1": 1, "dpcl_7": 1, "dpcl_10": 1, "dpcl_18": 1}
+    history, today = norm_and_week(ptsd, {k: 2 for k in ptsd})
+    assert "pcl5_due_ptsd" in diary_flags(history, today)
+    history, today = norm_and_week({"dphq_4": 0}, {"dphq_4": 1})
+    assert "phq9_due_depression" in diary_flags(history, today)
+
+
+def test_sleep_alcohol_and_medication_flags():
     today = date(2026, 10, 3)
-    h = {
-        today: {"nightmares": 3},
-        today - timedelta(days=1): {"sleep_hours": 3.5},
-        today - timedelta(days=2): {"sleep_hours": 3.5},
-    }
-    assert "sleep_review" in diary_flags(h, today)
-    h[today - timedelta(days=1)]["sleep_hours"] = 4
-    assert "sleep_review" not in diary_flags(h, today)
+    nights = {today - timedelta(days=i): {"sleep_hours": 7, "sleep_quality": 0} for i in range(3)}
+    nights[today - timedelta(days=1)] = {"sleep_hours": 3.5, "sleep_quality": 2}
+    assert "sleep_review" in diary_flags(nights, today)
+    nights[today - timedelta(days=1)]["sleep_hours"] = 4
+    assert "sleep_review" not in diary_flags(nights, today)
+
+    drinks = {today: {"alcohol_portions": 6}, today - timedelta(days=2): {"alcohol_portions": 7}}
+    assert set(diary_flags(drinks, today, medication_active=True)) >= {"alcohol_on_medication", "rus_audit_due_alcohol"}
+    assert "alcohol_on_medication" not in diary_flags(drinks, today)
+
+    missed = {today - timedelta(days=i): {"medication": "no"} for i in range(3)}
+    assert "medication_contact" in diary_flags(missed, today)
+    week = {today - timedelta(days=i): {"medication": "yes" if i % 3 else "no"} for i in range(7)}
+    assert "adherence_review" in diary_flags(week, today)
+    assert diary_flags({today: {"medication": "no", "medication_reason": "side_effects"}}, today) == (
+        "side_effects_review",
+    )
 
 
 def test_total_threshold_and_zone_are_separate_decisions():
@@ -96,15 +119,60 @@ def test_total_threshold_and_zone_are_separate_decisions():
         IntakePolicy.model_validate({**data, "rus_audit_s_expand_from_zone": 2})
 
 
-def test_module_rotation_never_drops_suicide_question():
+def test_diary_parts_and_module_rotation():
     from app.core.intake_questions import diary_questions
 
-    first = {
-        q.id for q in diary_questions(["veteran", "depression"], suicide_monitoring=False, weekday=0, day_index=100)
-    }
-    second = {
-        q.id for q in diary_questions(["veteran", "depression"], suicide_monitoring=False, weekday=1, day_index=101)
-    }
-    assert "death_thoughts" in first & second
-    assert "nightmares" in first and "nightmares" not in second
-    assert "burden" in first and "burden" not in second
+    assert [q.id for q in diary_questions("morning", ["veteran", "depression"])] == [
+        "sleep_hours",
+        "sleep_quality",
+        "alcohol_portions",
+    ]
+    evening = [q.id for q in diary_questions("evening", ["veteran", "depression"], day_index=0)]
+    assert evening == ["mood", "medication", "medication_reason", "dphq_1", "dphq_2", "dphq_3"] + [
+        "dpcl_1",
+        "dpcl_7",
+        "dpcl_10",
+        "dpcl_18",
+    ]
+    assert [q.id for q in diary_questions("evening", ["depression"], day_index=5)][-3:] == [
+        "dphq_7",
+        "dphq_8",
+        "dphq_9",
+    ]
+    assert [q.id for q in diary_questions("evening", [], day_index=1)] == ["mood", "medication", "medication_reason"]
+
+
+def test_demo_policy_is_separate_and_marked(monkeypatch):
+    from app.config import get_settings
+
+    monkeypatch.setenv("INTAKE_DEMO", "1")
+    monkeypatch.setattr(get_settings(), "demo_clock", True)
+    demo = load_policy()
+    assert demo.approval and "DEMO" in demo.approval.reviewer and demo.cssrs_positive_policy == "graded"
+    monkeypatch.delenv("INTAKE_DEMO")
+    assert load_policy().approval is None
+
+
+def test_full_scale_change_against_the_start_of_observation():
+    from app.core.interpretation import scale_interpretation
+
+    def phq(total, baseline, previous=None):
+        totals = {"phq9": {"complete": True, "total": total}}
+        return scale_interpretation(
+            "phq9", totals, baseline=baseline, previous=previous, policy=load_policy(), retriage_delta=5
+        )["codes"]
+
+    assert phq(4, 16) == ["minimal", "remission"]
+    assert phq(8, 16) == ["mild", "response"]
+    assert phq(11, 16) == ["moderate", "improved"]
+    assert phq(15, 16) == ["moderately_severe", "stable"]
+    assert phq(21, 10, previous=16) == ["severe", "worse"]
+    pcl = scale_interpretation(
+        "pcl5",
+        {"pcl5": {"complete": True, "total": 27}},
+        baseline=45,
+        previous=40,
+        policy=load_policy(),
+        retriage_delta=10,
+    )
+    assert pcl["codes"] == ["below", "response"]