Keep route drawings in sync

apps/web/tests/route-planner.test.tsx

@@ -383,6 +383,7 @@ describe("RoutePlanner", () => {
   });
 
   it("opens the compact result view and keeps critical warnings above secondary route details", () => {
+    const onEditRoute = vi.fn();
     const result = {
       ...routeOption("primary", "Hauptroute", 4),
       warnings: [
@@ -411,6 +412,7 @@ describe("RoutePlanner", () => {
         onClearDestination={vi.fn()}
         onUseGpsAsStart={vi.fn()}
         onSelectRoute={vi.fn()}
+        onEditRoute={onEditRoute}
         onCollapse={vi.fn()}
       />
     );
@@ -422,9 +424,44 @@ describe("RoutePlanner", () => {
     expect(screen.queryByRole("button", { name: "Start auf Karte setzen" })).not.toBeInTheDocument();
 
     fireEvent.click(screen.getByRole("button", { name: "Plan ändern" }));
+    expect(onEditRoute).toHaveBeenCalledTimes(1);
     expect(screen.getByText("Route planen")).toBeVisible();
     expect(screen.getByRole("button", { name: "Start auf Karte setzen" })).toBeVisible();
-    expect(screen.getByRole("button", { name: "Zur Route" })).toBeVisible();
+  });
+
+  it("explicitly discards a planned route through the parent state", () => {
+    const onCancelRoute = vi.fn();
+    const result = routeOption("primary", "Hauptroute", 4);
+
+    render(
+      <RoutePlanner
+        startPoint={{ lat: 52, lon: 7 }}
+        gpsPosition={null}
+        destination={{ lat: 52, lon: 7.1 }}
+        result={result}
+        routeOptions={[result]}
+        weatherReport={null}
+        weatherLoading={false}
+        weatherError={null}
+        loading={false}
+        error={null}
+        pickMode={null}
+        onSubmit={vi.fn()}
+        onPickStart={vi.fn()}
+        onPickDestination={vi.fn()}
+        onClearStart={vi.fn()}
+        onClearDestination={vi.fn()}
+        onUseGpsAsStart={vi.fn()}
+        onSelectRoute={vi.fn()}
+        onCancelRoute={onCancelRoute}
+        onCollapse={vi.fn()}
+      />
+    );
+
+    fireEvent.click(screen.getByRole("button", { name: "Route verwerfen" }));
+
+    expect(onCancelRoute).toHaveBeenCalledTimes(1);
+    expect(screen.getByText("Route planen")).toBeVisible();
   });
 
   it("filters retired fairway and depth warnings from route results", () => {