open as worspace implementation

src/components/ActionsPanel.tsx

@@ -12,6 +12,7 @@ interface ActionsPanelProps {
 
   onSplit: () => void;
   onExtractSelected: () => void;
+  onOpenSelectionAsWorkspace: () => void;
   onExportReordered: () => void;
 
   splitDownloads: SplitPdfDownload[];
@@ -25,6 +26,7 @@ const ActionsPanel: React.FC<ActionsPanelProps> = ({
   selectedCount,
   onSplit,
   onExtractSelected,
+  onOpenSelectionAsWorkspace,
   onExportReordered,
   splitDownloads,
   subsetDownload,
@@ -37,6 +39,11 @@ const ActionsPanel: React.FC<ActionsPanelProps> = ({
     onExtractSelected();
   };
 
+  const handleOpenSelectionAsWorkspaceClick = () => {
+    if (selectedCount === 0) return;
+    onOpenSelectionAsWorkspace();
+  };
+
   return (
     <div className="card">
       <h2>Tools</h2>
@@ -72,6 +79,20 @@ const ActionsPanel: React.FC<ActionsPanelProps> = ({
           📤 Extract selected ({selectedCount})
         </button>
 
+        <button
+          className="secondary"
+          disabled={disabled || selectedCount === 0}
+          onClick={handleOpenSelectionAsWorkspaceClick}
+          style={{ flex: '1 1 45%' }}
+          title={
+            selectedCount === 0
+              ? 'Select at least one page'
+              : 'Open selected pages as a new unsaved workspace'
+          }
+        >
+          🧩 Open selection as workspace
+        </button>
+
         <button
           className="secondary"
           disabled={disabled}