feat(locales): add UI transparency and glass effect settings in German, English, Italian, and Russian translations; include descriptions for new appearance options

meshchatx/src/frontend/locales/de.json

@@ -74,6 +74,11 @@
         "copy": "Kopieren",
         "appearance": "Erscheinungsbild",
         "appearance_description": "Wechseln Sie jederzeit zwischen hellen und dunklen Voreinstellungen.",
+        "ui_transparency": "Hintergrundtransparenz",
+        "ui_transparency_description": "Erhöht die Durchsichtigkeit des Haupt-Hintergrunds. Seitenleisten bleiben deckend.",
+        "ui_glass_enabled": "Glaseffekt",
+        "ui_glass_enabled_description": "Milchglas-Unschärfe bei Glaskarten. Aus: undurchsichtige Flächen.",
+        "reset_appearance_defaults": "Erscheinungsbild auf Standard zurücksetzen",
         "light_theme": "Helles Thema",
         "dark_theme": "Dunkles Thema",
         "live_preview": "Live-Vorschau wird sofort aktualisiert.",

meshchatx/src/frontend/locales/en.json

@@ -80,6 +80,11 @@
         "copy": "Copy",
         "appearance": "Appearance",
         "appearance_description": "Switch between light and dark presets anytime.",
+        "ui_transparency": "Background transparency",
+        "ui_transparency_description": "Increases see-through on the main shell background. Side panels stay solid for readability.",
+        "ui_glass_enabled": "Glass effect",
+        "ui_glass_enabled_description": "Frosted blur on glass-style cards. When off, cards use solid surfaces.",
+        "reset_appearance_defaults": "Reset appearance to defaults",
         "light_theme": "Light Theme",
         "dark_theme": "Dark Theme",
         "live_preview": "Live preview updates instantly.",

meshchatx/src/frontend/locales/it.json

@@ -80,6 +80,11 @@
         "copy": "Copia",
         "appearance": "Aspetto",
         "appearance_description": "Passa tra i temi chiaro e scuro in qualsiasi momento.",
+        "ui_transparency": "Trasparenza dello sfondo",
+        "ui_transparency_description": "Aumenta la trasparenza dello sfondo principale. I pannelli laterali restano opachi.",
+        "ui_glass_enabled": "Effetto vetro",
+        "ui_glass_enabled_description": "Sfocatura vetro sulle schede stile glass. Disattivato: superfici solide.",
+        "reset_appearance_defaults": "Ripristina aspetto predefinito",
         "light_theme": "Tema Chiaro",
         "dark_theme": "Tema Scuro",
         "live_preview": "L'anteprima si aggiorna istantaneamente.",

meshchatx/src/frontend/locales/ru.json

@@ -74,6 +74,11 @@
         "copy": "Копировать",
         "appearance": "Внешний вид",
         "appearance_description": "Переключайтесь между светлой и темной темами в любое время.",
+        "ui_transparency": "Прозрачность фона",
+        "ui_transparency_description": "Усиливает просвечивание основного фона. Боковые панели остаются непрозрачными.",
+        "ui_glass_enabled": "Эффект стекла",
+        "ui_glass_enabled_description": "Матовое размытие для «стеклянных» карточек. Выкл. — сплошные поверхности.",
+        "reset_appearance_defaults": "Сбросить оформление к умолчаниям",
         "light_theme": "Светлая тема",
         "dark_theme": "Темная тема",
         "live_preview": "Предпросмотр обновляется мгновенно.",