fix: preserve blank CVs and reliable editor undo

job-tracker-ui/src/cvBuilder.ts

@@ -51,6 +51,8 @@ export type CvVariantSettings = {
   showPhoto: boolean;
   showPageNumbers: boolean;
   showIcons: boolean;
+  sectionsExplicit?: boolean | null;
+  includeProfileContact?: boolean | null;
   sections: CvSectionSetting[];
   overrides: Record<string, CvItemOverride>;
   customSections: CvCustomSectionSetting[];
@@ -241,6 +243,17 @@ export function emptyCvVariantSettings(themeId = "modern"): CvVariantSettings {
   };
 }
 
+export async function getCvExportFailureKey(error: unknown): Promise<"cvEmptyContent" | "cvPdfBusy" | "cvPdfTimedOut" | undefined> {
+  const response = (error as { response?: { status?: number; data?: unknown } })?.response;
+  if (response?.status === 503) return "cvPdfBusy";
+  if (response?.status === 504) return "cvPdfTimedOut";
+  if (response?.status !== 400) return undefined;
+  try {
+    const data = response.data instanceof Blob ? JSON.parse(await response.data.text()) : response.data;
+    return (data as { code?: string })?.code === "cv_empty_content" ? "cvEmptyContent" : undefined;
+  } catch { return undefined; }
+}
+
 // --- API ---
 // --- Pure helpers (unit-tested) ---