feat: add KnowledgeConfirmDialog component and integrate delete confirmation dialog in KnowledgePage

src/pages/Knowledge/components/KnowledgeConfirmDialog.tsx

@@ -0,0 +1,109 @@
+import * as Dialog from '@radix-ui/react-dialog';
+import type { ReactNode } from 'react';
+
+type KnowledgeConfirmDialogProps = {
+  open: boolean;
+  busy: boolean;
+  title: string;
+  description: string;
+  fileName: string;
+  cancelLabel: string;
+  confirmLabel: string;
+  confirmingLabel: string;
+  closeLabel: string;
+  icon: ReactNode;
+  onClose: () => void;
+  onConfirm: () => void;
+};
+
+export default function KnowledgeConfirmDialog({
+  open,
+  busy,
+  title,
+  description,
+  cancelLabel,
+  confirmLabel,
+  confirmingLabel,
+  closeLabel,
+  icon,
+  onClose,
+  onConfirm,
+}: KnowledgeConfirmDialogProps) {
+  function handleOpenChange(nextOpen: boolean) {
+    if (!nextOpen && !busy) {
+      onClose();
+    }
+  }
+
+  return (
+    <Dialog.Root open={open} onOpenChange={handleOpenChange}>
+      <Dialog.Portal>
+        <Dialog.Overlay className="fixed inset-0 z-50 bg-black/45 backdrop-blur-[2px]" />
+        <Dialog.Content
+          className="fixed left-1/2 top-1/2 z-60 w-[calc(100vw-32px)] max-w-130 -translate-x-1/2 -translate-y-1/2 rounded-2xl bg-[#F4F3EB] p-0 shadow-[0_30px_80px_rgba(15,23,42,0.18)] outline-none dark:bg-[#1f1f22]"
+          onEscapeKeyDown={(event) => {
+            if (busy) {
+              event.preventDefault();
+            }
+          }}
+          onPointerDownOutside={(event) => {
+            if (busy) {
+              event.preventDefault();
+            }
+          }}
+        >
+          <div className="flex items-start justify-between gap-4 border-b border-black/6 px-6 py-5 dark:border-white/6">
+            <div className="flex min-w-0 items-start gap-4">
+              <div className="flex h-12 w-12 shrink-0 items-center justify-center rounded-2xl border border-red-500/15 bg-red-500/10 text-red-600 dark:border-red-400/20 dark:bg-red-500/10 dark:text-red-300">
+                {icon}
+              </div>
+
+              <div className="min-w-0">
+                <Dialog.Title
+                  className="text-[26px] font-normal leading-none tracking-tight text-[#171717] dark:text-[#f3f4f6]"
+                  style={{ fontFamily: "Georgia, Cambria, 'Times New Roman', Times, serif" }}
+                >
+                  {title}
+                </Dialog.Title>
+                <Dialog.Description className="mt-3 text-[14px] leading-6 text-[#525866] dark:text-gray-400">
+                  {description}
+                </Dialog.Description>
+              </div>
+            </div>
+
+            <button
+              type="button"
+              className="rounded-full p-1.5 text-[#99A0AE] transition-colors hover:text-[#171717] disabled:cursor-not-allowed disabled:opacity-50 dark:hover:text-[#f3f4f6]"
+              onClick={onClose}
+              disabled={busy}
+              aria-label={closeLabel}
+            >
+              <svg viewBox="0 0 24 24" className="h-5 w-5 fill-none stroke-current" strokeWidth="1.8">
+                <path d="M6 6L18 18M18 6L6 18" strokeLinecap="round" />
+              </svg>
+            </button>
+          </div>
+
+          <div className="flex items-center justify-end gap-3 px-6 py-5">
+            <button
+              type="button"
+              className="inline-flex h-10 items-center rounded-full border border-black/10 px-4 text-[13px] font-medium text-[#171717]/80 transition-colors hover:bg-black/5 hover:text-[#171717] disabled:cursor-not-allowed disabled:opacity-60 dark:border-gray-700 dark:text-gray-300 dark:hover:bg-white/5 dark:hover:text-[#f3f4f6]"
+              onClick={onClose}
+              disabled={busy}
+            >
+              {cancelLabel}
+            </button>
+            <button
+              type="button"
+              className="inline-flex h-10 items-center rounded-full bg-red-600 px-4 text-[13px] font-medium text-white transition-colors hover:bg-red-700 disabled:cursor-not-allowed disabled:opacity-60 dark:bg-red-500 dark:hover:bg-red-400"
+              onClick={onConfirm}
+              disabled={busy}
+            >
+              {busy ? confirmingLabel : confirmLabel}
+            </button>
+          </div>
+        </Dialog.Content>
+      </Dialog.Portal>
+    </Dialog.Root>
+  );
+}

src/pages/Knowledge/components/index.ts

@@ -2,5 +2,6 @@ export { default as KnowledgeDocsTable } from './KnowledgeDocsTable';
 export type { KnowledgeDocRow } from './KnowledgeDocsTable';
 export { default as KnowledgeEmptyState } from './KnowledgeEmptyState';
 export { default as KnowledgeFeedbackBanner } from './KnowledgeFeedbackBanner';
+export { default as KnowledgeConfirmDialog } from './KnowledgeConfirmDialog';
 export { default as KnowledgePageHeader } from './KnowledgePageHeader';
 export { default as KnowledgeToolbar } from './KnowledgeToolbar';

src/pages/Knowledge/copy.ts

@@ -22,7 +22,6 @@ const EN_KNOWLEDGE_MESSAGES: MessageTree = {
   storageLabel: 'Storage',
   emptyTitle: 'No documents yet',
   emptyDescription: 'Upload a file to start managing the local knowledge docs directory.',
-  deleteConfirm: 'Delete this document?',
   table: {
     name: 'Name',
     size: 'Size',
@@ -39,6 +38,12 @@ const EN_KNOWLEDGE_MESSAGES: MessageTree = {
     cancel: 'Cancel',
     confirm: 'Upload',
   },
+  deleteDialog: {
+    title: 'Delete document?',
+    description: 'This will permanently remove "{name}" from the local knowledge docs directory.',
+    confirm: 'Delete document',
+    close: 'Close dialog',
+  },
   status: {
     loading: 'Loading documents...',
     uploading: 'Uploading...',
@@ -62,7 +67,6 @@ const ZH_KNOWLEDGE_MESSAGES: MessageTree = {
   storageLabel: '占用空间',
   emptyTitle: '暂无文档',
   emptyDescription: '先上传一个文件，开始管理本地知识文档目录。',
-  deleteConfirm: '确定要删除此文档吗？',
   table: {
     name: '名称',
     size: '大小',
@@ -79,6 +83,12 @@ const ZH_KNOWLEDGE_MESSAGES: MessageTree = {
     cancel: '取消',
     confirm: '上传',
   },
+  deleteDialog: {
+    title: '删除文档？',
+    description: '此操作会将“{name}”从本地知识文档目录中永久移除。',
+    confirm: '删除文档',
+    close: '关闭弹窗',
+  },
   status: {
     loading: '正在加载文档...',
     uploading: '上传中...',
@@ -102,7 +112,6 @@ const JA_KNOWLEDGE_MESSAGES: MessageTree = {
   storageLabel: 'Storage',
   emptyTitle: '文書がありません',
   emptyDescription: 'まずファイルをアップロードして、ローカルの knowledge docs を管理してください。',
-  deleteConfirm: 'この文書を削除しますか？',
   table: {
     name: '名前',
     size: 'サイズ',
@@ -119,6 +128,12 @@ const JA_KNOWLEDGE_MESSAGES: MessageTree = {
     cancel: 'キャンセル',
     confirm: 'アップロード',
   },
+  deleteDialog: {
+    title: '文書を削除しますか？',
+    description: 'この操作により「{name}」はローカルの knowledge docs ディレクトリから完全に削除されます。',
+    confirm: '文書を削除',
+    close: 'ダイアログを閉じる',
+  },
   status: {
     loading: '文書を読み込み中...',
     uploading: 'アップロード中...',

src/pages/Knowledge/index.tsx

@@ -1,6 +1,7 @@
 import { useEffect, useMemo, useRef, useState, type ChangeEvent, type ReactNode, type SVGProps } from 'react';
 import { knowledgeDocsApi } from '../../lib/knowledge-docs-api';
 import { useKnowledgeCopy } from './copy';
+import KnowledgeConfirmDialog from './components/KnowledgeConfirmDialog';
 import KnowledgeDocsTable, { type KnowledgeDocRow } from './components/KnowledgeDocsTable';
 import KnowledgeEmptyState from './components/KnowledgeEmptyState';
 import KnowledgeFeedbackBanner from './components/KnowledgeFeedbackBanner';
@@ -201,6 +202,7 @@ export default function KnowledgePage() {
   const [error, setError] = useState<string | null>(null);
   const [feedback, setFeedback] = useState<KnowledgeFeedback>(null);
   const [deletingId, setDeletingId] = useState<string | null>(null);
+  const [deleteTarget, setDeleteTarget] = useState<KnowledgeDocRow | null>(null);
 
   const stats = useMemo(() => ({
     count: docs.length,
@@ -282,9 +284,18 @@ export default function KnowledgePage() {
     }
   }
 
-  async function handleDelete(doc: KnowledgeDocRow): Promise<void> {
+  function handleDelete(doc: KnowledgeDocRow): void {
-    const confirmed = window.confirm(t('knowledge.deleteConfirm'));
+    setDeleteTarget(doc);
-    if (!confirmed) return;
+  }
+
+  function closeDeleteDialog(): void {
+    if (deletingId) return;
+    setDeleteTarget(null);
+  }
+
+  async function confirmDelete(): Promise<void> {
+    const doc = deleteTarget;
+    if (!doc) return;
 
     setDeletingId(doc.id);
     setError(null);
@@ -292,10 +303,12 @@ export default function KnowledgePage() {
     try {
       await knowledgeDocsApi.delete(doc.fileName);
       setDocs((current) => current.filter((item) => item.id !== doc.id));
+      setDeleteTarget(null);
       pushFeedback(t('knowledge.status.deleteSuccess'), 'success');
     } catch (caughtError) {
       const message = caughtError instanceof Error ? caughtError.message : String(caughtError);
       setError(message);
+      setDeleteTarget(null);
       pushFeedback(t('knowledge.status.failed', { error: message }), 'error');
     } finally {
       setDeletingId(null);
@@ -311,6 +324,27 @@ export default function KnowledgePage() {
           </KnowledgeFeedbackBanner>
         ) : null}
 
+        <KnowledgeConfirmDialog
+          open={Boolean(deleteTarget)}
+          busy={Boolean(deleteTarget && deletingId === deleteTarget.id)}
+          title={t('knowledge.deleteDialog.title', undefined, 'Delete document?')}
+          description={t(
+            'knowledge.deleteDialog.description',
+            { name: deleteTarget?.fileName ?? '' },
+            'This will permanently remove "{name}".',
+          )}
+          fileName={deleteTarget?.fileName ?? ''}
+          cancelLabel={t('knowledge.common.cancel')}
+          confirmLabel={t('knowledge.deleteDialog.confirm', undefined, 'Delete document')}
+          confirmingLabel={t('knowledge.status.deleting')}
+          closeLabel={t('knowledge.deleteDialog.close', undefined, 'Close dialog')}
+          icon={<TrashIcon className="h-5 w-5" />}
+          onClose={closeDeleteDialog}
+          onConfirm={() => {
+            void confirmDelete();
+          }}
+        />
+
         <div className="flex h-full w-full flex-col p-10 pb-0 pt-12">
           <KnowledgePageHeader
             title={t('knowledge.title', undefined, 'Knowledge Docs')}

tests/knowledge-page.test.tsx

@@ -21,7 +21,6 @@ vi.mock('../src/pages/Knowledge/copy', () => ({
       'knowledge.storageLabel': 'Storage',
       'knowledge.refresh': 'Refresh',
       'knowledge.upload': 'Upload',
-      'knowledge.uploadHint': 'Knowledge docs only',
       'knowledge.status.loading': 'Loading documents...',
       'knowledge.status.uploading': 'Uploading...',
       'knowledge.status.deleting': 'Deleting...',
@@ -29,7 +28,10 @@ vi.mock('../src/pages/Knowledge/copy', () => ({
       'knowledge.status.deleteSuccess': 'Deleted',
       'knowledge.emptyTitle': 'No documents yet',
       'knowledge.emptyDescription': 'Upload a file',
-      'knowledge.deleteConfirm': 'Delete this document?',
+      'knowledge.deleteDialog.title': 'Delete document?',
+      'knowledge.deleteDialog.confirm': 'Delete document',
+      'knowledge.deleteDialog.close': 'Close dialog',
+      'knowledge.common.cancel': 'Cancel',
       'knowledge.table.name': 'Name',
       'knowledge.table.size': 'Size',
       'knowledge.table.modifiedAt': 'Modified At',
@@ -42,6 +44,10 @@ vi.mock('../src/pages/Knowledge/copy', () => ({
       return `Knowledge docs request failed: ${params?.error ?? ''}`;
     }
 
+    if (path === 'knowledge.deleteDialog.description') {
+      return `This will permanently remove "${params?.name ?? ''}" from the local knowledge docs directory.`;
+    }
+
     return dictionary[path] ?? fallback ?? path;
   },
 }));
@@ -53,7 +59,6 @@ describe('KnowledgePage', () => {
     apiMocks.list.mockReset();
     apiMocks.upload.mockReset();
     apiMocks.delete.mockReset();
-    vi.stubGlobal('confirm', vi.fn(() => true));
   });
 
   it('loads and renders docs from the knowledge docs api', async () => {
@@ -87,6 +92,7 @@ describe('KnowledgePage', () => {
 
     const deleteButton = await screen.findByRole('button', { name: /delete/i });
     fireEvent.click(deleteButton);
+    fireEvent.click(screen.getByRole('button', { name: 'Delete document' }));
 
     await waitFor(() => {
       expect(apiMocks.delete).toHaveBeenCalledWith('guide.md');