Refactor/properties locale and paste constant

src/components/Properties/PropertiesPanel.tsx

@@ -37,11 +37,11 @@ export function PropertiesPanel() {
         <div className="px-3 py-2.5 border-b border-border flex items-center gap-2">
           <span className="font-mono text-xs text-accent">▣</span>
           <span className="text-xs font-medium text-text">
-            {selectedIds.length} objects selected
+            {t.properties.multipleSelectedFmt.replace('{n}', String(selectedIds.length))}
           </span>
         </div>
         <p className="px-3 py-3 text-xs text-muted">
-          {t.properties.x} / {t.properties.y}: use arrow keys to move
+          {t.properties.x} / {t.properties.y}: {t.properties.multipleSelectedHint}
         </p>
       </div>
     );

src/locales/ar.ts

@@ -49,6 +49,8 @@ const ar = {
     x: 'X',
     y: 'Y',
     comment: 'تعليق',
+    multipleSelectedFmt: '{n} عناصر مختارة',
+    multipleSelectedHint: 'استخدم أسهم الاتجاه للتحريك',
   },
 
   label: {

src/locales/bg.ts

@@ -49,6 +49,8 @@ const bg = {
     x: 'X',
     y: 'Y',
     comment: 'Коментар',
+    multipleSelectedFmt: 'Избрани обекти: {n}',
+    multipleSelectedHint: 'със стрелките местиш',
   },
 
   label: {

src/locales/cs.ts

@@ -49,6 +49,8 @@ const cs = {
     x: 'X',
     y: 'Y',
     comment: 'Komentář',
+    multipleSelectedFmt: 'Vybráno objektů: {n}',
+    multipleSelectedHint: 'šipkami posunete',
   },
 
   label: {

src/locales/da.ts

@@ -49,6 +49,8 @@ const da = {
     x: 'X',
     y: 'Y',
     comment: 'Kommentar',
+    multipleSelectedFmt: '{n} objekter valgt',
+    multipleSelectedHint: 'piletaster flytter',
   },
 
   label: {

src/locales/de.ts

@@ -49,6 +49,8 @@ const de = {
     x: 'X',
     y: 'Y',
     comment: 'Kommentar',
+    multipleSelectedFmt: '{n} Objekte ausgewählt',
+    multipleSelectedHint: 'Pfeiltasten zum Verschieben',
   },
 
   label: {

src/locales/el.ts

@@ -49,6 +49,8 @@ const el = {
     x: 'X',
     y: 'Y',
     comment: 'Σχόλιο',
+    multipleSelectedFmt: '{n} αντικείμενα επιλέχθηκαν',
+    multipleSelectedHint: 'τα βέλη μετακινούν',
   },
 
   label: {

src/locales/en.ts

@@ -49,6 +49,8 @@ const en = {
     x: 'X',
     y: 'Y',
     comment: 'Comment',
+    multipleSelectedFmt: '{n} objects selected',
+    multipleSelectedHint: 'use arrow keys to move',
   },
 
   label: {

src/locales/es.ts

@@ -49,6 +49,8 @@ const es = {
     x: 'X',
     y: 'Y',
     comment: 'Comentario',
+    multipleSelectedFmt: '{n} objetos seleccionados',
+    multipleSelectedHint: 'flechas para mover',
   },
 
   label: {

src/locales/et.ts

@@ -49,6 +49,8 @@ const et = {
     x: 'X',
     y: 'Y',
     comment: 'Kommentaar',
+    multipleSelectedFmt: '{n} objekti valitud',
+    multipleSelectedHint: 'nooltega liigutad',
   },
 
   label: {

src/locales/fa.ts

@@ -49,6 +49,8 @@ const fa = {
     x: 'X',
     y: 'Y',
     comment: 'توضیح',
+    multipleSelectedFmt: '{n} مورد انتخاب شده',
+    multipleSelectedHint: 'با کلیدهای جهت‌دار جابه‌جا کنید',
   },
 
   label: {

src/locales/fi.ts

@@ -49,6 +49,8 @@ const fi = {
     x: 'X',
     y: 'Y',
     comment: 'Kommentti',
+    multipleSelectedFmt: '{n} objektia valittu',
+    multipleSelectedHint: 'nuolinäppäimillä siirrät',
   },
 
   label: {

src/locales/fr.ts

@@ -49,6 +49,8 @@ const fr = {
     x: 'X',
     y: 'Y',
     comment: 'Commentaire',
+    multipleSelectedFmt: '{n} objets sélectionnés',
+    multipleSelectedHint: 'flèches pour déplacer',
   },
 
   label: {

src/locales/he.ts

@@ -49,6 +49,8 @@ const he = {
     x: 'X',
     y: 'Y',
     comment: 'הערה',
+    multipleSelectedFmt: '{n} פריטים נבחרו',
+    multipleSelectedHint: 'מקשי החצים מזיזים',
   },
 
   label: {

src/locales/hr.ts

@@ -49,6 +49,8 @@ const hr = {
     x: 'X',
     y: 'Y',
     comment: 'Komentar',
+    multipleSelectedFmt: 'Odabrano objekata: {n}',
+    multipleSelectedHint: 'strelicama pomičeš',
   },
 
   label: {

src/locales/hu.ts

@@ -49,6 +49,8 @@ const hu = {
     x: 'X',
     y: 'Y',
     comment: 'Megjegyzés',
+    multipleSelectedFmt: '{n} objektum kijelölve',
+    multipleSelectedHint: 'nyilakkal mozgasd',
   },
 
   label: {

src/locales/it.ts

@@ -49,6 +49,8 @@ const it = {
     x: 'X',
     y: 'Y',
     comment: 'Commento',
+    multipleSelectedFmt: '{n} oggetti selezionati',
+    multipleSelectedHint: 'frecce per spostare',
   },
 
   label: {

src/locales/ja.ts

@@ -49,6 +49,8 @@ const ja = {
     x: 'X',
     y: 'Y',
     comment: 'コメント',
+    multipleSelectedFmt: '{n} 個のオブジェクトが選択されました',
+    multipleSelectedHint: '矢印キーで移動',
   },
 
   label: {

src/locales/ko.ts

@@ -49,6 +49,8 @@ const ko = {
     x: 'X',
     y: 'Y',
     comment: '설명',
+    multipleSelectedFmt: '{n}개 항목 선택됨',
+    multipleSelectedHint: '화살표 키로 이동',
   },
 
   label: {

src/locales/lt.ts

@@ -49,6 +49,8 @@ const lt = {
     x: 'X',
     y: 'Y',
     comment: 'Komentaras',
+    multipleSelectedFmt: 'Pasirinkta objektų: {n}',
+    multipleSelectedHint: 'rodyklėmis perkeli',
   },
 
   label: {

src/locales/lv.ts

@@ -49,6 +49,8 @@ const lv = {
     x: 'X',
     y: 'Y',
     comment: 'Komentārs',
+    multipleSelectedFmt: 'Atlasīti {n} objekti',
+    multipleSelectedHint: 'ar bultiņām pārvietot',
   },
 
   label: {

src/locales/nl.ts

@@ -49,6 +49,8 @@ const nl = {
     x: 'X',
     y: 'Y',
     comment: 'Opmerking',
+    multipleSelectedFmt: '{n} objecten geselecteerd',
+    multipleSelectedHint: 'pijltoetsen om te verplaatsen',
   },
 
   label: {

src/locales/no.ts

@@ -49,6 +49,8 @@ const no = {
     x: 'X',
     y: 'Y',
     comment: 'Kommentar',
+    multipleSelectedFmt: '{n} objekter valgt',
+    multipleSelectedHint: 'piltaster flytter',
   },
 
   label: {

src/locales/pl.ts

@@ -49,6 +49,8 @@ const pl = {
     x: 'X',
     y: 'Y',
     comment: 'Komentarz',
+    multipleSelectedFmt: 'Wybrano obiektów: {n}',
+    multipleSelectedHint: 'strzałki przesuwają',
   },
 
   label: {

src/locales/pt.ts

@@ -49,6 +49,8 @@ const pt = {
     x: 'X',
     y: 'Y',
     comment: 'Comentário',
+    multipleSelectedFmt: '{n} objetos selecionados',
+    multipleSelectedHint: 'setas para mover',
   },
 
   label: {

src/locales/ro.ts

@@ -49,6 +49,8 @@ const ro = {
     x: 'X',
     y: 'Y',
     comment: 'Comentariu',
+    multipleSelectedFmt: '{n} obiecte selectate',
+    multipleSelectedHint: 'săgeți pentru mutare',
   },
 
   label: {

src/locales/sk.ts

@@ -49,6 +49,8 @@ const sk = {
     x: 'X',
     y: 'Y',
     comment: 'Komentár',
+    multipleSelectedFmt: 'Vybraných objektov: {n}',
+    multipleSelectedHint: 'šípkami posuniete',
   },
 
   label: {

src/locales/sl.ts

@@ -49,6 +49,8 @@ const sl = {
     x: 'X',
     y: 'Y',
     comment: 'Komentar',
+    multipleSelectedFmt: 'Izbranih objektov: {n}',
+    multipleSelectedHint: 's puščicami premikaš',
   },
 
   label: {

src/locales/sr.ts

@@ -49,6 +49,8 @@ const sr = {
     x: 'X',
     y: 'Y',
     comment: 'Коментар',
+    multipleSelectedFmt: 'Изабрано објеката: {n}',
+    multipleSelectedHint: 'стрелицама померај',
   },
 
   label: {

src/locales/sv.ts

@@ -49,6 +49,8 @@ const sv = {
     x: 'X',
     y: 'Y',
     comment: 'Kommentar',
+    multipleSelectedFmt: '{n} objekt markerade',
+    multipleSelectedHint: 'pilar för att flytta',
   },
 
   label: {

src/locales/tr.ts

@@ -49,6 +49,8 @@ const tr = {
     x: 'X',
     y: 'Y',
     comment: 'Yorum',
+    multipleSelectedFmt: '{n} nesne seçildi',
+    multipleSelectedHint: 'oklarla taşı',
   },
 
   label: {

src/locales/zh-hans.ts

@@ -49,6 +49,8 @@ const zhHans = {
     x: 'X',
     y: 'Y',
     comment: '备注',
+    multipleSelectedFmt: '已选择 {n} 个对象',
+    multipleSelectedHint: '方向键移动',
   },
 
   label: {

src/locales/zh-hant.ts

@@ -49,6 +49,8 @@ const zhHant = {
     x: 'X',
     y: 'Y',
     comment: '備註',
+    multipleSelectedFmt: '已選擇 {n} 個物件',
+    multipleSelectedHint: '方向鍵移動',
   },
 
   label: {

src/store/labelStore.test.ts

@@ -12,7 +12,6 @@ function reset() {
     selectedIds: [],
     clipboard: [],
     pasteCount: 0,
-    duplicateCount: 0,
     canvasSettings: {
       showGrid: false,
       snapEnabled: false,
@@ -138,6 +137,43 @@ describe('duplicateObject', () => {
   });
 });
 
+// ── duplicateSelectedObjects ──────────────────────────────────────────────────
+
+describe('duplicateSelectedObjects', () => {
+  it('staggers consecutive duplicates linearly (+20 from current selection)', () => {
+    state().addObject('text', { x: 100, y: 100 });
+    state().selectObject(defined(objs()[0]).id);
+
+    state().duplicateSelectedObjects();
+    state().duplicateSelectedObjects();
+    state().duplicateSelectedObjects();
+
+    expect(objs()).toHaveLength(4);
+    // Selection follows the new copy each time, so the offsets compound
+    // linearly: 100, 120, 140, 160 — never quadratic.
+    expect(objs().map((o) => o.x)).toEqual([100, 120, 140, 160]);
+    expect(objs().map((o) => o.y)).toEqual([100, 120, 140, 160]);
+  });
+
+  it('selects only the new copies', () => {
+    state().addObject('text');
+    state().addObject('text');
+    state().selectObjects(objs().map((o) => o.id));
+
+    state().duplicateSelectedObjects();
+
+    expect(state().selectedIds).toHaveLength(2);
+    expect(state().selectedIds).toEqual([objs()[2]!.id, objs()[3]!.id]);
+  });
+
+  it('is a no-op when nothing is selected', () => {
+    state().addObject('text');
+    state().selectObject(null);
+    state().duplicateSelectedObjects();
+    expect(objs()).toHaveLength(1);
+  });
+});
+
 // ── copy / paste ──────────────────────────────────────────────────────────────
 
 describe('copy / paste', () => {