add confirmation dialog before deleting folders

frontend/src/components/Dialog/DeleteFolderDialog.tsx

@@ -0,0 +1,91 @@
+import { FC } from 'react';
+import { AlertTriangle } from 'lucide-react';
+import { Button } from '@/components/ui/button';
+
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog';
+
+interface DeleteFolderDialogProps {
+  isOpen: boolean;
+  setIsOpen: (open: boolean) => void;
+  onConfirm: () => void;
+  folderPath: string;
+}
+
+const DeleteFolderDialog: FC<DeleteFolderDialogProps> = ({
+  isOpen,
+  setIsOpen,
+  onConfirm,
+  folderPath,
+}) => {
+  const handleConfirm = () => {
+    onConfirm();
+    setIsOpen(false);
+  };
+
+  return (
+    <Dialog open={isOpen} onOpenChange={setIsOpen}>
+      <DialogContent className="sm:max-w-[500px]">
+        <DialogHeader>
+          <div className="flex items-center gap-3">
+            <div className="flex h-10 w-10 items-center justify-center rounded-full bg-red-100 dark:bg-red-900/20">
+              <AlertTriangle className="h-5 w-5 text-red-600 dark:text-red-400" />
+            </div>
+            <DialogTitle className="text-xl">Delete Folder?</DialogTitle>
+          </div>
+          <DialogDescription className="pt-4 text-left">
+            <div className="space-y-3">
+              <p className="font-medium text-foreground">
+                You are about to remove this folder from your library:
+              </p>
+              <div className="rounded-md bg-muted p-3">
+                <code className="text-sm break-all">{folderPath}</code>
+              </div>
+              <div className="space-y-2 text-sm">
+                <p className="font-semibold text-yellow-700 dark:text-yellow-400">
+                  ⚠️ This action will:
+                </p>
+                <ul className="ml-4 space-y-1 list-disc text-muted-foreground">
+                  <li>Remove the folder from your PictoPy library</li>
+                  <li>Delete all photos in this folder from the library</li>
+                  <li>Remove all face recognition data for these photos</li>
+                  <li>Delete all AI-generated tags and clusters</li>
+                </ul>
+              </div>
+              <div className="rounded-md border border-green-300 bg-green-50 p-3 dark:border-green-700 dark:bg-green-900/20">
+                <p className="text-sm font-medium text-green-800 dark:text-green-300">
+                  ✓ Your actual files on disk will NOT be deleted
+                </p>
+              </div>
+            </div>
+          </DialogDescription>
+        </DialogHeader>
+
+        <DialogFooter className="gap-2 sm:gap-0">
+          <Button
+            variant="outline"
+            onClick={() => setIsOpen(false)}
+            className="cursor-pointer"
+          >
+            Cancel
+          </Button>
+          <Button
+            variant="destructive"
+            onClick={handleConfirm}
+            className="cursor-pointer"
+          >
+            Delete from Library
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+};
+
+export default DeleteFolderDialog;

frontend/src/pages/SettingsPage/components/FolderManagementCard.tsx

@@ -1,4 +1,4 @@
-import React from 'react';
+import React, { useState } from 'react';
 import { Folder, Trash2, Check } from 'lucide-react';
 
 import { Switch } from '@/components/ui/switch';
@@ -11,6 +11,7 @@ import FolderPicker from '@/components/FolderPicker/FolderPicker';
 import { useFolderOperations } from '@/hooks/useFolderOperations';
 import { FolderDetails } from '@/types/Folder';
 import SettingsCard from './SettingsCard';
+import DeleteFolderDialog from '@/components/Dialog/DeleteFolderDialog';
 
 /**
  * Component for managing folder operations in settings
@@ -29,6 +30,24 @@ const FolderManagementCard: React.FC = () => {
     (state: RootState) => state.folders.taggingStatus,
   );
 
+  // Dialog state for folder deletion confirmation
+  const [deleteDialogOpen, setDeleteDialogOpen] = useState(false);
+  const [folderToDelete, setFolderToDelete] = useState<FolderDetails | null>(
+    null,
+  );
+
+  const handleDeleteClick = (folder: FolderDetails) => {
+    setFolderToDelete(folder);
+    setDeleteDialogOpen(true);
+  };
+
+  const handleConfirmDelete = () => {
+    if (folderToDelete) {
+      deleteFolder(folderToDelete.folder_id);
+      setFolderToDelete(null);
+    }
+  };
+
   return (
     <SettingsCard
       icon={Folder}
@@ -68,7 +87,7 @@ const FolderManagementCard: React.FC = () => {
                   </div>
 
                   <Button
-                    onClick={() => deleteFolder(folder.folder_id)}
+                    onClick={() => handleDeleteClick(folder)}
                     variant="outline"
                     size="sm"
                     className="h-8 w-8 cursor-pointer text-gray-500 hover:border-red-300 hover:text-red-600 dark:text-gray-400 dark:hover:text-red-400"
@@ -95,7 +114,7 @@ const FolderManagementCard: React.FC = () => {
                         0) >= 100 && <Check className="h-3 w-3" />}
                       {Math.round(
                         taggingStatus[folder.folder_id]?.tagging_percentage ??
-                          0,
+                        0,
                       )}
                       %
                     </span>
@@ -131,6 +150,14 @@ const FolderManagementCard: React.FC = () => {
       <div className="border-border mt-6 border-t pt-6">
         <FolderPicker />
       </div>
+
+      {/* Delete Folder Confirmation Dialog */}
+      <DeleteFolderDialog
+        isOpen={deleteDialogOpen}
+        setIsOpen={setDeleteDialogOpen}
+        onConfirm={handleConfirmDelete}
+        folderPath={folderToDelete?.folder_path || ''}
+      />
     </SettingsCard>
   );
 };