Changes

src/stores/useModelStore.ts

@@ -91,6 +91,11 @@ interface ModelStore {
   clearMeasurements: () => void;
   removeMeasurement: (id: string) => void;
 
+  compareMode: boolean;
+  setCompareMode: (on: boolean) => void;
+  compareImage: string | null;
+  setCompareImage: (url: string | null) => void;
+
   screenshots: string[];
   addScreenshot: (dataUrl: string) => void;
   removeScreenshot: (index: number) => void;
@@ -176,6 +181,11 @@ export const useModelStore = create<ModelStore>((set) => ({
     measurements: state.measurements.filter(m => m.id !== id),
   })),
 
+  compareMode: false,
+  setCompareMode: (compareMode) => set({ compareMode }),
+  compareImage: null,
+  setCompareImage: (compareImage) => set({ compareImage }),
+
   screenshots: [],
   addScreenshot: (dataUrl) => set((state) => ({ screenshots: [...state.screenshots, dataUrl] })),
   removeScreenshot: (index) => set((state) => ({