feat(v2): add multiple extra features from the pdf slides

frontend/src/App.test.jsx

@@ -5,11 +5,19 @@ vi.mock("react-quick-pinch-zoom", () => ({
   default: ({ children }) => <div>{children}</div>
 }));
 
+vi.mock("./lib/api.js", () => ({
+  getOperations: () => Promise.resolve({ operations: [] }),
+  listStates: () => Promise.resolve({ states: [] }),
+  uploadImage: vi.fn(),
+  applyStateOperation: vi.fn(),
+  combineStates: vi.fn()
+}));
+
 describe("App", () => {
-  it("renders the processing studio immediately", () => {
+  it("renders the academic workspace immediately", () => {
     render(<App />);
-    expect(screen.getByText("Spatial Image Enhancer Pro")).toBeInTheDocument();
-    expect(screen.getAllByText("Original").length).toBeGreaterThan(0);
-    expect(screen.getAllByText("Processed").length).toBeGreaterThan(0);
+    expect(screen.getByText("Academic Image Processing Workspace")).toBeInTheDocument();
+    expect(screen.getByText("Image States")).toBeInTheDocument();
+    expect(screen.getByText("Combine Selected States")).toBeInTheDocument();
   });
 });