feat(web): full desktop layout instead of a stretched phone view

- focus screens: question and context on the left, answers on the right in
  one wide card; consent text and the 0–10 scale in one wide column
- today: dashboard with tasks, this week's doses and quick actions side by
  side; meds / doctor / profile in two-column grids; welcome gets «Как это
  работает» steps
- fix: 0–10 scale no longer overflows narrow containers

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

web/src/screens/AnonymousSignIn.tsx

@@ -32,13 +32,20 @@ export function AnonymousSignIn() {
 
   return (
     <AppShell signedIn={false} focus>
-      <div className="stack narrow">
+      <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>
           <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">
@@ -73,12 +80,13 @@ export function AnonymousSignIn() {
           </ul>
         </section>
 
-        <Notice tone="warn">{t.warning}</Notice>
         {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>
+        </div>
       </div>
     </AppShell>
   );