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>

web/src/screens/AnonymousSignIn.tsx

@@ -2,15 +2,18 @@ import { useState } from "react";
 import { useNavigate } from "react-router-dom";
 
 import { api } from "../api/client";
+import type { Focus } from "../api/types";
 import { AppShell, Notice, TopBar } from "../components/AppShell";
 import { Icon, type IconName } from "../components/Icon";
 import { ru } from "../content/ru";
 import { useSession } from "../session/SessionContext";
 
-const YES_ICONS: IconName[] = ["calendar", "pill", "doc"];
-const NO_ICONS: IconName[] = ["user", "doc"];
+const FOCUS: { id: Focus; icon: IconName }[] = [
+  { id: "depression", icon: "smile" },
+  { id: "ptsd", icon: "heart" },
+];
 
-// A3 · Анонимный вход
+// A3 · Анонимный вход: человек выбирает, что хочет проверить — от этого зависит стартовый опрос
 export function AnonymousSignIn() {
   const t = ru.anonymous;
   const navigate = useNavigate();
@@ -18,11 +21,11 @@ export function AnonymousSignIn() {
   const [busy, setBusy] = useState(false);
   const [error, setError] = useState(false);
 
-  const start = async () => {
+  const start = async (focus: Focus) => {
     setBusy(true);
     setError(false);
     try {
-      signIn(await api.signInAnonymous());
+      signIn(await api.signInAnonymous(focus));
       navigate("/flow", { replace: true });
     } catch {
       setError(true);
@@ -34,58 +37,28 @@ export function AnonymousSignIn() {
     <AppShell signedIn={false} focus>
       <div className="focus">
         <TopBar onBack={() => navigate("/")} />
-        <div className="split">
-        <div className="split__lead">
-        <header className="head">
-          <span className="tile-icon">
-            <Icon name="lock" size={26} />
-          </span>
+        <div className="stack signin">
           <h1 className="h1">{t.title}</h1>
-          <p className="lead">{t.lead}</p>
-        </header>
-        <Notice tone="warn">{t.warning}</Notice>
-        </div>
-        <div className="split__act">
-        <section className="panel panel--teal">
-          <p className="panel__title">
-            <span className="badge-icon badge-icon--teal">
-              <Icon name="check" size={16} />
-            </span>
-            {t.yesTitle}
-          </p>
-          <ul className="iconlist">
-            {t.yes.map((item, i) => (
-              <li key={item}>
-                <Icon name={YES_ICONS[i]} size={20} />
-                {item}
-              </li>
+
+          <div className="entry-grid">
+            {FOCUS.map(({ id, icon }) => (
+              <button key={id} type="button" className="entry" onClick={() => start(id)} disabled={busy}>
+                <span className="entry__top">
+                  <span className="tile-icon">
+                    <Icon name={icon} size={26} />
+                  </span>
+                </span>
+                <span className="entry__title">
+                  {t.focus[id].title}
+                  <Icon name="chevronRight" />
+                </span>
+                <span className="entry__text">{t.focus[id].text}</span>
+              </button>
             ))}
-          </ul>
-        </section>
+          </div>
 
-        <section className="panel panel--red">
-          <p className="panel__title">
-            <span className="badge-icon badge-icon--red">
-              <Icon name="x" size={16} />
-            </span>
-            {t.noTitle}
-          </p>
-          <ul className="iconlist">
-            {t.no.map((item, i) => (
-              <li key={item}>
-                <Icon name={NO_ICONS[i]} size={20} />
-                {item}
-              </li>
-            ))}
-          </ul>
-        </section>
-
-        {error && <Notice tone="danger">{ru.common.networkError}</Notice>}
-
-        <button type="button" className="btn btn--primary" onClick={start} disabled={busy}>
-          {busy ? t.submitting : t.submit}
-        </button>
-        </div>
+          {error && <Notice tone="danger">{ru.common.networkError}</Notice>}
+          <p className="muted small">{busy ? t.submitting : t.note}</p>
         </div>
       </div>
     </AppShell>