0.2.3 — built-in code editor, .uasset previews, new icon

- Built-in code editor: edit working-copy source files in place (Edit → textarea
  → Save) before committing, no external IDE needed. Backend write_depot opens
  the file for edit, clears read-only, writes UTF-8; confined to the client root.
- .uasset previews: pull the embedded Unreal thumbnail (PNG) server-side for both
  working copy and history; on-demand real 3D via a headless Unreal FBX export
  (commandlet mode, no editor window), temp file deleted right after — nothing
  cached on disk. Plugin content paths mapped to their mount point.
- New app icon (brand mark on a theme tile) + theme-aware in-app logo.
- Connection pill / Settings show the actual connected server (P4PORT), not the
  server's internal self-reported address.
- Fix: the "select all" checkbox no longer renders as a giant empty square when
  not everything is selected (size pinned).
- IDE picker chooses which installed editor opens code; AI replies in UI language.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/i18n.ts

@@ -374,6 +374,17 @@ const D: Record<string, Tr> = {
   "Not a text file.": { ru: "Не текстовый файл.", de: "Keine Textdatei.", fr: "Pas un fichier texte.", es: "No es un archivo de texto." },
   "{user} submitted #{n}": { ru: "{user} отправил #{n}", de: "{user} hat #{n} übermittelt", fr: "{user} a soumis #{n}", es: "{user} envió #{n}" },
   "Reconnected to the server.": { ru: "Соединение с сервером восстановлено.", de: "Wieder mit dem Server verbunden.", fr: "Reconnecté au serveur.", es: "Reconectado al servidor." },
+  "Connected server": { ru: "Сервер подключения", de: "Verbundener Server", fr: "Serveur connecté", es: "Servidor conectado" },
+  "No embedded thumbnail. Load the 3D model below (needs Unreal Engine installed).": { ru: "Встроенного превью нет. Загрузи 3D-модель ниже (нужен установленный Unreal Engine).", de: "Kein eingebettetes Vorschaubild. Lade unten das 3D-Modell (Unreal Engine muss installiert sein).", fr: "Pas de miniature intégrée. Charge le modèle 3D ci-dessous (Unreal Engine requis).", es: "Sin miniatura incrustada. Carga el modelo 3D abajo (requiere Unreal Engine instalado)." },
+  "Load 3D model": { ru: "Загрузить 3D-модель", de: "3D-Modell laden", fr: "Charger le modèle 3D", es: "Cargar modelo 3D" },
+  "Exporting from Unreal… (first time is slow)": { ru: "Экспорт из Unreal… (первый раз долго)", de: "Export aus Unreal… (erstes Mal langsam)", fr: "Export depuis Unreal… (lent la première fois)", es: "Exportando desde Unreal… (la primera vez es lento)" },
+  "Export the mesh from Unreal and view it in 3D": { ru: "Экспортировать меш из Unreal и посмотреть в 3D", de: "Mesh aus Unreal exportieren und in 3D ansehen", fr: "Exporter le mesh depuis Unreal et le voir en 3D", es: "Exportar el mesh desde Unreal y verlo en 3D" },
+  "3D export works on the working copy, not history": { ru: "3D-экспорт работает по рабочей копии, не по истории", de: "3D-Export funktioniert mit der Arbeitskopie, nicht mit der Historie", fr: "L'export 3D fonctionne sur la copie de travail, pas l'historique", es: "La exportación 3D funciona con la copia de trabajo, no con el historial" },
+  "Exports the version currently synced on disk.": { ru: "Экспортирует версию, которая сейчас синкнута на диске.", de: "Exportiert die aktuell auf der Festplatte synchronisierte Version.", fr: "Exporte la version actuellement synchronisée sur le disque.", es: "Exporta la versión actualmente sincronizada en disco." },
+  "Editing": { ru: "Редактирование", de: "Bearbeiten", fr: "Édition", es: "Editando" },
+  "Edit": { ru: "Редактировать", de: "Bearbeiten", fr: "Modifier", es: "Editar" },
+  "Saved {name}": { ru: "Сохранено: {name}", de: "Gespeichert: {name}", fr: "Enregistré : {name}", es: "Guardado: {name}" },
+  "Pick the Unreal project working folder first.": { ru: "Сначала выбери рабочую папку Unreal-проекта.", de: "Wähle zuerst den Arbeitsordner des Unreal-Projekts.", fr: "Choisis d'abord le dossier de travail du projet Unreal.", es: "Primero elige la carpeta de trabajo del proyecto Unreal." },
   "Disconnected from the server — retrying…": { ru: "Соединение с сервером потеряно — переподключаюсь…", de: "Verbindung zum Server verloren — erneuter Versuch…", fr: "Déconnecté du serveur — nouvelle tentative…", es: "Desconectado del servidor — reintentando…" },
 };