Add Perforce-style command Log panel + UI scale setting

Backend emits a p4-log event per command (cmd + item count + status).
Frontend adds a bottom Log panel toggled from a new Window menu (Ctrl+L),
an always-on status bar showing the last command, and a hover log-peek
popover over the activity indicator. Settings gains an interface-scale
(zoom) control (50–200%, persisted). All new strings translated (5 langs).

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

src/i18n.ts

@@ -153,6 +153,14 @@ const D: Record<string, Tr> = {
   // app modal — settings
   "Settings": { ru: "Настройки", de: "Einstellungen", fr: "Paramètres", es: "Ajustes" },
   "Language": { ru: "Язык", de: "Sprache", fr: "Langue", es: "Idioma" },
+  "Interface scale": { ru: "Масштаб интерфейса", de: "Oberflächenskalierung", fr: "Échelle de l’interface", es: "Escala de interfaz" },
+  "Reset": { ru: "Сбросить", de: "Zurücksetzen", fr: "Réinitialiser", es: "Restablecer" },
+  // window menu + log panel
+  "Window": { ru: "Окно", de: "Fenster", fr: "Fenêtre", es: "Ventana" },
+  "Log": { ru: "Лог", de: "Protokoll", fr: "Journal", es: "Registro" },
+  "Clear": { ru: "Очистить", de: "Leeren", fr: "Effacer", es: "Limpiar" },
+  "item(s)": { ru: "элем.", de: "Einträge", fr: "élément(s)", es: "elemento(s)" },
+  "No commands yet.": { ru: "Пока нет команд.", de: "Noch keine Befehle.", fr: "Aucune commande pour l’instant.", es: "Aún no hay comandos." },
   "Light ☀": { ru: "Светлая ☀", de: "Hell ☀", fr: "Clair ☀", es: "Claro ☀" },
   "Dark ☾": { ru: "Тёмная ☾", de: "Dunkel ☾", fr: "Sombre ☾", es: "Oscuro ☾" },
   "Server version": { ru: "Версия сервера", de: "Serverversion", fr: "Version du serveur", es: "Versión del servidor" },