zip download of single pdfs

src/components/ActionsPanel.tsx

@@ -16,6 +16,7 @@ interface ActionsPanelProps {
   onExportReordered: () => void;
 
   splitDownloads: SplitPdfDownload[];
+  splitZipDownload: PdfDownload | null;
   subsetDownload: PdfDownload | null;
   exportDownload: PdfDownload | null;
 }
@@ -29,6 +30,7 @@ const ActionsPanel: React.FC<ActionsPanelProps> = ({
   onOpenSelectionAsWorkspace,
   onExportReordered,
   splitDownloads,
+  splitZipDownload,
   subsetDownload,
   exportDownload,
 }) => {
@@ -132,7 +134,18 @@ const ActionsPanel: React.FC<ActionsPanelProps> = ({
       {splitDownloads.length > 0 && (
         <div style={{ marginTop: '0.75rem', fontSize: '0.9rem' }}>
           <strong>Single-page PDFs:</strong>
-          <div>
+          {splitZipDownload && (
+            <div style={{ marginTop: '0.25rem' }}>
+              <a
+                className="download-link"
+                href={splitZipDownload.url}
+                download={splitZipDownload.filename}
+              >
+                Download all as ZIP ({splitDownloads.length} files)
+              </a>
+            </div>
+          )}
+          <div style={{ marginTop: '0.25rem' }}>
             {splitDownloads.map((download) => (
               <a
                 key={download.id}

src/components/HelpDialog.tsx

@@ -49,11 +49,15 @@ const tutorialSteps = [
     body: 'Extract selected pages when you only need a download. Open the selection as a new workspace when you want to continue working on that subset.',
   },
   {
-    title: '5. Save your workspace or export a PDF',
+    title: '5. Split and download results',
+    body: 'Splitting creates individual one-page PDF downloads and a ZIP archive that contains all generated page files.',
+  },
+  {
+    title: '6. Save your workspace or export a PDF',
     body: 'Saving a workspace keeps the current working state in this browser. Exporting creates a new PDF file for download.',
   },
   {
-    title: '6. Use history deliberately',
+    title: '7. Use history deliberately',
     body: 'Each workspace operation is stored as a command with label and timestamp. Undo and redo walk through that command history.',
   },
 ];