feat(ui): batch UI polish — auth/lang to sidebar, search h-7, info overflow, graph zoom

User feedback batch — multiple iterations of UX refinement.

Layout shifts:
- TopBar right cluster: AuthBadge + LanguageSwitch переехали в Sidebar
  footer per user ("вход в сайдбар перенесем", "ru/en тоже в сайд баре").
  TopBar теперь: breadcrumb + search + Docs + VersionBadge + ThemeSwitch
  only. Освобождает место + concentrates user/lang controls в одном месте.
- Sidebar footer: новая структура — Lang toggle (Язык [RU/EN]) + Auth block
  (avatar+name+logout authed, Sign-in CTA anonymous) + collapse button.
  Refactored из inline JSX в named subcomponents (AuthedUserBlock,
  SignInCta, SidebarFooter).

Sizing / spacing:
- TopBar SearchInput: h-9 → h-7 to match LangSwitch/ThemeSwitch (+ Sign-in
  кнопка). User: "поиск по справочникам высоту выровняй". Override via
  `!h-7 text-cell` className на SearchInput.
- TopBar: h-14 → h-11 (slimmer). Sidebar logo block matches h-11.

Catalog search:
- Catalog page input в toolbar — restored для on-page filter ("Catalog
  search никак не работает" → проверил, работает; добавил TopBar context-
  aware behavior где TopBar input на /dictionaries route синхронизируется
  с URL ?q= live).
- TopBar search context-aware: catalog mode = live filter; else = submit
  → /search (records JSONB search).

InfoPanel:
- Description: `text-body text-ink-2 leading-relaxed` → +
  `break-words overflow-hidden`. Long slash-separated values
  (LZW/Deflate/JPEG2000/ZSTD/LERC) теперь wrap'ятся внутри panel вместо
  overflow за границы (user: "описание убежало за границы панели").
- Container: + `min-w-0 overflow-hidden` для proper flex shrinking.

Graph:
- Zoom controls overlay (+/-/1:1/N%) + mouse wheel zoom toward cursor +
  drag pan по empty space. Per user: "Граф связей еще не зумируется".

WorkflowBanner:
- Moved в InfoPanel banner slot (compact flex-col layout) — free
  horizontal space выше editor + concentrates status info в left rail.

Auth:
- AuthBadge: primary Button → compact h-7 outline button. Matches
  TopBar toolbar control style.
- RequireAuth: убран visible amber error banner "Авторизация недоступна:
  Failed to fetch" — silent fall-through к anonymous mode (user feedback).
- routes/index.tsx: beforeLoad skip redirect если есть `?code=` в URL
  (OIDC callback fix). HomeIndex компонент рендерит null + redirect на
  /dictionaries после auth complete.

LanguageSwitch:
- h-8 + items-stretch + inner items-center — matches ThemeSwitch height.
- Later moved entirely в Sidebar footer (h-7 button only) per user.

ordinis-admin-ui/src/components/layout/Sidebar.tsx

@@ -159,13 +159,12 @@ function SidebarContent({
   /** Toggle button handler. When undefined — collapse button hidden (mobile). */
   onToggleCollapsed?: () => void
 }) {
-  const { t } = useTranslation()
   return (
     <>
       {/* Logo block per redesign prototype: circle (accent) + ORDINIS + MDM mute */}
       <div
         className={cn(
-          'h-14 flex items-center border-b border-line shrink-0',
+          'h-11 flex items-center border-b border-line shrink-0',
           collapsed ? 'justify-center px-2' : 'px-5 gap-2',
         )}
       >
@@ -213,48 +212,57 @@ function SidebarContent({
         ))}
       </nav>
 
-      {/* User block — sticky bottom */}
-      {auth.isAuthenticated && auth.user?.profile && (
-        <div
-          className={cn(
-            'border-t border-line py-3 flex items-center gap-2 shrink-0',
-            collapsed ? 'px-2 justify-center' : 'px-3',
-          )}
-          title={String(
-            auth.user.profile.preferred_username ||
-              auth.user.profile.name ||
-              auth.user.profile.email ||
-              'user',
-          )}
-        >
-          <div className="size-8 rounded-full bg-accent text-on-accent inline-flex items-center justify-center text-cell font-semibold shrink-0">
-            {String(
-              auth.user.profile.preferred_username ||
-                auth.user.profile.name ||
-                'U',
-            )
-              .charAt(0)
-              .toUpperCase()}
-          </div>
-          {!collapsed && (
-            <div className="min-w-0 flex-1">
-              <div className="text-cell font-medium text-ink truncate">
-                {String(
-                  auth.user.profile.preferred_username ||
-                    auth.user.profile.name ||
-                    auth.user.profile.email ||
-                    'user',
-                )}
-              </div>
-              {auth.user.profile.email && (
-                <div className="text-cell text-mute truncate">{String(auth.user.profile.email)}</div>
-              )}
-            </div>
-          )}
+      {/* Footer: Lang toggle + User profile (or Sign-in) + Collapse toggle.
+        * Moved from TopBar per user feedback: "вход в сайдбар, ru/en в сайдбаре". */}
+      <SidebarFooter
+        auth={auth}
+        collapsed={collapsed}
+        onToggleCollapsed={onToggleCollapsed}
+      />
+    </>
+  )
+}
+
+function SidebarFooter({
+  auth,
+  collapsed,
+  onToggleCollapsed,
+}: {
+  auth: ReturnType<typeof useAuth>
+  collapsed: boolean
+  onToggleCollapsed?: () => void
+}) {
+  const { t, i18n } = useTranslation()
+  const cur = i18n.language?.toLowerCase().startsWith('en') ? 'en' : 'ru'
+  const next = cur === 'ru' ? 'en-US' : 'ru-RU'
+
+  return (
+    <>
+      {/* Language toggle row (только когда expanded). */}
+      {!collapsed && (
+        <div className="border-t border-line px-3 py-2 flex items-center gap-2 shrink-0">
+          <span className="text-cap text-mute">
+            {t('sidebar.lang', { defaultValue: 'Язык' })}
+          </span>
+          <button
+            type="button"
+            onClick={() => i18n.changeLanguage(next)}
+            className="ml-auto h-7 px-2.5 rounded-md border border-line bg-surface text-cap text-ink-2 hover:bg-surface-2 hover:text-ink transition-colors"
+            aria-label={`Language: ${cur.toUpperCase()}, click to switch`}
+          >
+            {cur.toUpperCase()}
+          </button>
         </div>
       )}
 
-      {/* Collapse toggle — desktop only (mobile uses Sheet close ×) */}
+      {/* Auth block: avatar + name (authed) OR Sign-in CTA (anonymous). */}
+      {auth.isAuthenticated && auth.user?.profile ? (
+        <AuthedUserBlock auth={auth} collapsed={collapsed} />
+      ) : (
+        <SignInCta auth={auth} collapsed={collapsed} />
+      )}
+
+      {/* Collapse toggle */}
       {onToggleCollapsed && (
         <button
           type="button"
@@ -279,6 +287,77 @@ function SidebarContent({
   )
 }
 
+function AuthedUserBlock({
+  auth,
+  collapsed,
+}: {
+  auth: ReturnType<typeof useAuth>
+  collapsed: boolean
+}) {
+  const { t } = useTranslation()
+  const profile = auth.user?.profile
+  if (!profile) return null
+  const display = String(
+    profile.preferred_username || profile.name || profile.email || 'user',
+  )
+  return (
+    <div
+      className={cn(
+        'border-t border-line py-3 flex items-center gap-2 shrink-0',
+        collapsed ? 'px-2 justify-center' : 'px-3',
+      )}
+      title={display}
+    >
+      <div className="size-8 rounded-full bg-accent text-on-accent inline-flex items-center justify-center text-cell font-semibold shrink-0">
+        {display.charAt(0).toUpperCase()}
+      </div>
+      {!collapsed && (
+        <div className="min-w-0 flex-1">
+          <div className="text-cell font-medium text-ink truncate">{display}</div>
+          {profile.email && (
+            <div className="text-cell text-mute truncate">{String(profile.email)}</div>
+          )}
+        </div>
+      )}
+      {!collapsed && (
+        <button
+          type="button"
+          onClick={() => auth.signoutRedirect().catch(() => auth.removeUser())}
+          title={t('auth.logout', { defaultValue: 'Logout' })}
+          aria-label={t('auth.logout', { defaultValue: 'Logout' })}
+          className="size-7 rounded-md text-mute hover:text-ink hover:bg-surface-2 inline-flex items-center justify-center transition-colors shrink-0"
+        >
+          <span aria-hidden>⎋</span>
+        </button>
+      )}
+    </div>
+  )
+}
+
+function SignInCta({
+  auth,
+  collapsed,
+}: {
+  auth: ReturnType<typeof useAuth>
+  collapsed: boolean
+}) {
+  const { t } = useTranslation()
+  return (
+    <button
+      type="button"
+      onClick={() => auth.signinRedirect()}
+      className={cn(
+        'border-t border-line py-2.5 text-cell text-ink-2 hover:text-ink hover:bg-surface-2 inline-flex items-center gap-2 transition-colors shrink-0',
+        collapsed ? 'px-2 justify-center' : 'px-3',
+      )}
+      title={t('auth.login', { defaultValue: 'Войти' })}
+    >
+      <span aria-hidden>→</span>
+      {!collapsed && t('auth.login', { defaultValue: 'Войти' })}
+    </button>
+  )
+}
+
 /**
  * MobileSidebar — Sheet с тем же содержимым что desktop Sidebar. Открывается
  * через hamburger button в TopBar (<1024px), закрывается на: backdrop click,