Werkzeuge: Bogen-Werkzeug (arcCommand, 3-Klick CCW) + Toolbar/Icon/i18n verdrahtet

src/i18n/en.ts

@@ -117,6 +117,8 @@ export const en: Record<TranslationKey, string> = {
   "tool.rect": "Rectangle",
   "tool.circle": "Circle",
   "tool.circle.hint": "Circle: set center, then radius",
+  "tool.arc": "Arc",
+  "tool.arc.hint": "Arc: center, start point, then end point (CCW)",
   "tool.select.hint": "Select — click/drag elements",
   "tool.window.hint": "Window: pick a wall, then set the position",
   "tool.door.hint": "Door: pick a wall, then set the position",
@@ -699,6 +701,10 @@ export const en: Record<TranslationKey, string> = {
   "cmd.circle.label": "Circle",
   "cmd.circle.center": "Center:",
   "cmd.circle.radius": "Radius:",
+  "cmd.arc.label": "Arc",
+  "cmd.arc.center": "Center:",
+  "cmd.arc.start": "Start point (radius + start angle):",
+  "cmd.arc.end": "End point (end angle):",
   "cmd.move.label": "Move",
   "cmd.move.base": "Base point:",
   "cmd.move.target": "Target point:",