diff --git a/CMakeUserPresets.json.template b/CMakeUserPresets.json.template
index 5354427..01066a5 100644
--- a/CMakeUserPresets.json.template
+++ b/CMakeUserPresets.json.template
@@ -6,7 +6,7 @@
       "name": "win-local",
       "displayName": "Windows • Debug (local — build dir outside OneDrive/spaces)",
       "inherits": "windows-debug",
-      "binaryDir": "C:/Users/@USERNAME@/pdfeng-build/win-local",
+      "binaryDir": "D:/pdfeng-build/win-local",
       "cacheVariables": {
         "PDFENGINE_WITH_PDFIUM": "ON",
         "PDFENGINE_WITH_QPDF": "ON"
@@ -16,8 +16,11 @@
       "name": "win-local-pdfium",
       "displayName": "Windows • RelWithDebInfo + PDFium (static CRT — build dir outside OneDrive/spaces)",
       "inherits": "windows-release",
-      "binaryDir": "C:/Users/@USERNAME@/pdfeng-build/win-local-pdfium",
-      "cacheVariables": { "PDFENGINE_WITH_PDFIUM": "ON" }
+      "binaryDir": "D:/pdfeng-build/win-local-pdfium",
+      "cacheVariables": { 
+        "PDFENGINE_WITH_PDFIUM": "ON",
+        "PDFENGINE_WITH_QPDF": "ON"
+      }
     }
   ],
   "buildPresets": [
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index f78b79d..6663d88 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -564,7 +564,9 @@ function App() {
         const parentOrigin = urlParams.get('parent_origin') || import.meta.env.VITE_PARENT_ORIGIN || '*';
         window.parent.postMessage({ type: 'REMOTE_SAVE_COMPLETE' }, parentOrigin);
       } else {
-        await gatewayService.exportDocument(selectedDocId, activeDoc.filename);
+        // When running locally outside an iframe, edits are already auto-saved to the gateway DB.
+        // We just simulate a save delay to provide UI feedback, instead of downloading the file.
+        await new Promise(resolve => setTimeout(resolve, 600));
       }
     } catch (e) {
       console.error('Save failed', e);
@@ -682,7 +684,7 @@ function App() {
         canAssemble={can('canAssemble')}
         onUpload={handleUpload}
         onShowVersionHistory={() => setVersionHistoryModalOpen(true)}
-        onSave={handleSave}
+        onSave={isRemote ? handleSave : undefined}
         isInspectorOpen={isInspectorOpen}
         onToggleInspector={toggleInspector}
       />
diff --git a/gateway/debug_preview_region.png b/gateway/debug_preview_region.png
index fd7d60a..ae84973 100644
Binary files a/gateway/debug_preview_region.png and b/gateway/debug_preview_region.png differ