preserve cutoff line color in rotated preview

WebSite/src/App.tsx

@@ -86,9 +86,11 @@ type LibraryInfo = {
 type StoredDeformationJob = {
   job: BackendJob;
   progress: number;
+  renderVersion?: string;
 };
 
 const DEFORMATION_JOB_STORAGE_KEY = 'head_ct_morph_deformation_job';
+const DEFORMATION_RESULT_RENDER_VERSION = 'quick-preview-cutoff-only-v1';
 
 const API_BASE = typeof window === 'undefined'
   ? 'http://127.0.0.1:8787'
@@ -109,6 +111,10 @@ function readStoredDeformationJob(): StoredDeformationJob | null {
     if (!rawValue) return null;
     const parsed = JSON.parse(rawValue) as StoredDeformationJob;
     if (!parsed?.job?.id) return null;
+    if (parsed.renderVersion !== DEFORMATION_RESULT_RENDER_VERSION) {
+      window.localStorage.removeItem(DEFORMATION_JOB_STORAGE_KEY);
+      return null;
+    }
     return {
       job: parsed.job,
       progress: Math.max(0, Math.min(100, parsed.progress || 0)),
@@ -417,6 +423,7 @@ export default function App() {
       JSON.stringify({
         job: deformationJob,
         progress: deformationJob.status === 'completed' ? 100 : progress,
+        renderVersion: DEFORMATION_RESULT_RENDER_VERSION,
       })
     );
   }, [deformationJob, progress]);