chore: publish clean community baseline

apps/ui/html/fragments/lang-switcher.html

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+<div class="field-group" style="margin-top:8px;">
+  <label class="field-label">Interface language</label>
+  <div class="lang-switcher" style="display:flex;gap:6px;margin-top:6px;">
+    <button class="lang-btn" data-lang="en" onclick="setLang('en')">
+      <span class="lang-flag">🇬🇧</span>
+      <span data-i18n="settings.lang.en">English</span>
+    </button>
+    <button class="lang-btn" data-lang="ru" onclick="setLang('ru')">
+      <span class="lang-flag">🇷🇺</span>
+      <span data-i18n="settings.lang.ru">Русский</span>
+    </button>
+  </div>
+</div>