task(A4.7): migrate rotate/scale/mirror tools to v2 (selection-based transforms)

frontend/tests/pilotTools.test.ts

@@ -433,6 +433,86 @@ describe('A4.6 pilot: move/copy tools', () => {
   });
 });
 
+describe('A4.7 pilot: transform tools', () => {
+  it('rotate dreht um Pivot des ersten Elements; ein undo stellt zurück', () => {
+    const { ydoc } = createInMemoryDoc();
+    const doc = new CADDocument(ydoc);
+    const rotEl = makeEl('r1');
+    doc.addElement(rotEl);
+    let selIds: string[] = ['r1'];
+    const bridge = {
+      getIds: () => selIds,
+      setIds: (ids: string[]) => { selIds = ids; },
+      hitTest: () => null,
+    };
+    const ctx = makeCtx({ doc, selection: bridge });
+    const rotate = coreModifyPlugin.tools!.find((t) => t.manifest.id === 'rotate')!;
+
+    // Basispunkt rechts vom Zentrum (0°-Richtung), Element x=10
+    rotate.handlers.down!(pe(60, 10), ctx);
+    // Referenzklick oben → Δwinkel ≈ +90° (CCW)
+    rotate.handlers.down!(pe(10, 60), ctx);
+
+    expect(doc.undo()).toBe(true);
+    expect(doc.getAllElements().length).toBe(1);
+  });
+
+  it('scale vergrößert width/height um Faktor dist(pivot,zweiteKlick)/dist(pivot,basis)', () => {
+    const { ydoc } = createInMemoryDoc();
+    const doc = new CADDocument(ydoc);
+    const sq = makeEl('s1');
+    sq.width = 40;
+    sq.height = 40;
+    sq.x = 0;
+    sq.y = 0;
+    doc.addElement(sq);
+    let selIds: string[] = ['s1'];
+    const bridge = {
+      getIds: () => selIds,
+      setIds: (ids: string[]) => { selIds = ids; },
+      hitTest: () => null,
+    };
+    const ctx = makeCtx({ doc, selection: bridge });
+    const scale = coreModifyPlugin.tools!.find((t) => t.manifest.id === 'scale')!;
+
+    // Basis bei Distanz 50 vom Pivot, Ziel bei 100 → Faktor 2
+    scale.handlers.down!(pe(50, 0), ctx);
+    scale.handlers.down!(pe(100, 0), ctx);
+
+    expect(doc.getElement('s1')!.width).toBeCloseTo(80);   // 40×2
+    expect(doc.getElement('s1')!.height).toBeCloseTo(80);
+
+    expect(doc.undo()).toBe(true);
+    expect(doc.getElement('s1')!.width).toBeCloseTo(40);
+  });
+
+  it('mirror spiegelt Element an Achse basis→referenz', () => {
+    const { ydoc } = createInMemoryDoc();
+    const doc = new CADDocument(ydoc);
+    const el = makeEl('mi');
+    el.x = 30;
+    el.y = 0;
+    doc.addElement(el);
+    let selIds: string[] = ['mi'];
+    const bridge = {
+      getIds: () => selIds,
+      setIds: (ids: string[]) => { selIds = ids; },
+      hitTest: () => null,
+    };
+    const ctx = makeCtx({ doc, selection: bridge });
+    const mirror = coreModifyPlugin.tools!.find((t) => t.manifest.id === 'mirror')!;
+
+    // Spiegelachse = Y-Achse (basis (0,0)→ref (0,100)): Punkt (30,0)→(−30,0)
+    mirror.handlers.down!(pe(0, 0), ctx);
+    mirror.handlers.down!(pe(0, 100), ctx);
+
+    const mirrored = doc.getElement('mi')!;
+    expect(mirrored.x).toBeLessThan(0);        // jenseits der Achse
+    expect(Math.abs(mirrored.x)).toBeGreaterThanOrEqual(29); // ~spiegelsymmetrisch
+    expect(doc.undo()).toBe(true);
+  });
+});
+
 describe('A3 pilot: select tool', () => {
   function makeBridge(elements: CADElement[]) {
     let ids: string[] = [];