From 390377932bc17752b4ea48c77b65fbfadecd163a Mon Sep 17 00:00:00 2001
From: arkcia <Arkcia@pku.edu.cn>
Date: Tue, 25 Aug 2026 21:45:37 +0800
Subject: [PATCH] fix(template): preserve advanced template imports

---
 packages/core/src/services/data/manager.ts    |   8 +-
 .../core/src/services/template/manager.ts     | 168 ++++++------
 packages/core/src/utils/error.ts              |   7 +
 packages/core/tests/unit/data/manager.test.ts |  33 +++
 .../tests/unit/template/import-export.test.ts | 240 ++++++++++++++++--
 packages/desktop/main.js                      |  14 +-
 packages/ui/src/components/DataManager.vue    |   3 +-
 7 files changed, 370 insertions(+), 103 deletions(-)

diff --git a/packages/core/src/services/data/manager.ts b/packages/core/src/services/data/manager.ts
index 1b3ef13e..2475835a 100644
--- a/packages/core/src/services/data/manager.ts
+++ b/packages/core/src/services/data/manager.ts
@@ -10,7 +10,7 @@ import {
   DataInvalidFormatError,
   DataInvalidJsonError,
 } from './errors';
-import { toErrorWithCode } from '../../utils/error';
+import { stripErrorCodeMarkers, toErrorWithCode } from '../../utils/error';
 
 /**
  * 数据导入导出管理器
@@ -142,7 +142,11 @@ export class DataManager implements IDataManager {
           await service.importData(dataToImport[dataKey]);
           console.log(`Successfully imported ${dataKey}`);
         } catch (error) {
-          const errorMessage = `Failed to import ${dataKey}: ${error instanceof Error ? error.message : String(error)}`;
+          // Nested structured errors may contain markers outside the leading position.
+          const detail = stripErrorCodeMarkers(
+            error instanceof Error ? error.message : String(error)
+          );
+          const errorMessage = `Failed to import ${dataKey}: ${detail}`;
           errors.push(errorMessage);
           console.error(errorMessage, error);
         }
diff --git a/packages/core/src/services/template/manager.ts b/packages/core/src/services/template/manager.ts
index 00778a63..54419751 100644
--- a/packages/core/src/services/template/manager.ts
+++ b/packages/core/src/services/template/manager.ts
@@ -7,6 +7,7 @@ import { BuiltinTemplateLanguage, ITemplateLanguageService } from './languageSer
 import { CORE_SERVICE_KEYS } from '../../constants/storage-keys';
 import { ImportExportError } from '../../interfaces/import-export';
 import { IMPORT_EXPORT_ERROR_CODES, TEMPLATE_ERROR_CODES } from '../../constants/error-codes';
+import { stripErrorCodeMarkers } from '../../utils/error';
 
 
 
@@ -332,11 +333,67 @@ export class TemplateManager implements ITemplateManager {
     }
   }
 
+  /**
+   * Normalize and validate a template from imported data.
+   */
+  private normalizeImportedTemplate(
+    item: unknown,
+    builtinTemplateIds: ReadonlySet<string> = new Set<string>()
+  ): Template {
+    if (typeof item !== 'object' || item === null) {
+      throw new TemplateValidationError('Template must be an object');
+    }
+
+    const template = item as Partial<Template>;
+    if (typeof template.id !== 'string' || typeof template.name !== 'string') {
+      throw new TemplateValidationError('Template id and name must be strings');
+    }
+
+    // Reject corrupt shapes before applying defaults to legacy metadata.
+    const rawMetadata = template.metadata;
+    if (
+      rawMetadata !== undefined &&
+      (typeof rawMetadata !== 'object' || rawMetadata === null || Array.isArray(rawMetadata))
+    ) {
+      throw new TemplateValidationError('Template metadata must be a non-array object when present');
+    }
+    const metadata: Partial<Template['metadata']> = rawMetadata ?? {};
+
+    let finalTemplateId = template.id;
+    let finalTemplateName = template.name;
+
+    if (builtinTemplateIds.has(finalTemplateId)) {
+      const timestamp = Date.now();
+      const random = Math.random().toString(36).substring(2, 8);
+      finalTemplateId = `user-${finalTemplateId}-${timestamp}-${random}`;
+      finalTemplateName = `${finalTemplateName} (Imported copy)`;
+      console.warn(`Detected conflict with built-in template ID: ${template.id}, renamed to: ${finalTemplateId}`);
+    }
+
+    const userTemplate: Template = {
+      ...template,
+      id: finalTemplateId,
+      name: finalTemplateName,
+      isBuiltin: false,
+      metadata: {
+        version: metadata.version ?? '1.0.0',
+        lastModified: Date.now(),
+        templateType: metadata.templateType ?? 'optimize',
+        author: metadata.author ?? 'User',
+        ...(metadata.description !== undefined && { description: metadata.description }),
+        ...(metadata.language !== undefined && { language: metadata.language })
+      }
+    } as Template;
+
+    this.validateTemplateSchema(userTemplate);
+    this.validateTemplateId(userTemplate.id);
+    return userTemplate;
+  }
+
   /**
    * 导入用户模板
    */
   async importData(data: any): Promise<void> {
-    // 基本格式验证：必须是数组
     if (!Array.isArray(data)) {
       throw new ImportExportError(
         'Invalid template data format: data must be an array of template objects',
@@ -346,77 +403,44 @@ export class TemplateManager implements ITemplateManager {
       );
     }
 
-    const templates = data as Template[];
-
-    // Get existing user templates to clean up (替换模式)
     const existingTemplates = await this.listTemplates();
-    const userTemplateIds = existingTemplates
-      .filter(template => !template.isBuiltin)
-      .map(template => template.id);
+    const builtinTemplateIds = new Set(
+      existingTemplates
+        .filter(template => template.isBuiltin)
+        .map(template => template.id)
+    );
+    const importedTemplates: Template[] = [];
 
-    // Delete all existing user templates
-    for (const id of userTemplateIds) {
+    // Validate and normalize the complete replacement before mutating storage.
+    // This prevents malformed backups from deleting existing user templates.
+    for (const [index, item] of data.entries()) {
       try {
-        await this.deleteTemplate(id);
+        const userTemplate = this.normalizeImportedTemplate(item, builtinTemplateIds);
+
+        // Match saveTemplate's duplicate-ID behavior: the last entry wins.
+        const duplicateIndex = importedTemplates.findIndex(
+          importedTemplate => importedTemplate.id === userTemplate.id
+        );
+        if (duplicateIndex >= 0) {
+          importedTemplates[duplicateIndex] = userTemplate;
+        } else {
+          importedTemplates.push(userTemplate);
+        }
       } catch (error) {
-        console.warn(`Failed to delete template ${id}:`, error);
+        const message = stripErrorCodeMarkers(
+          error instanceof Error ? error.message : String(error)
+        );
+        throw new ImportExportError(
+          `Invalid template data at index ${index}: ${message}`,
+          await this.getDataType(),
+          error as Error,
+          IMPORT_EXPORT_ERROR_CODES.VALIDATION_ERROR,
+        );
       }
     }
 
-    const failedTemplates: { template: Template; error: Error }[] = [];
-
-    // Import each template individually, capturing failures
-    for (const template of templates) {
-      try {
-        // 使用 validateData 验证单个模板
-        if (!this.validateSingleTemplate(template)) {
-          console.warn(`Skipping invalid template configuration:`, template);
-          failedTemplates.push({ template, error: new Error('Invalid template configuration') });
-          continue;
-        }
-
-        // 检查是否与内置模板ID冲突
-        const builtinTemplate = existingTemplates.find(t => t.id === template.id && t.isBuiltin);
-        let finalTemplateId = template.id;
-        let finalTemplateName = template.name;
-
-        if (builtinTemplate) {
-          // 为冲突的模板生成新的ID和名称
-          const timestamp = Date.now();
-          const random = Math.random().toString(36).substr(2, 6);
-          finalTemplateId = `user-${template.id}-${timestamp}-${random}`;
-          finalTemplateName = `${template.name} (Imported copy)`;
-          console.warn(`Detected conflict with built-in template ID: ${template.id}, renamed to: ${finalTemplateId}`);
-        }
-
-        // 确保导入的模板标记为用户模板，并为缺失字段提供默认值
-        const userTemplate: Template = {
-          ...template,
-          id: finalTemplateId,
-          name: finalTemplateName,
-          isBuiltin: false,
-          metadata: {
-            version: template.metadata?.version || '1.0.0',
-            lastModified: Date.now(), // 更新为当前时间
-            templateType: template.metadata?.templateType || 'optimize', // 为旧版本数据提供默认类型
-            author: template.metadata?.author || 'User', // 导入的模板标记为用户创建
-            ...(template.metadata?.description && { description: template.metadata.description }),
-            ...(template.metadata?.language && { language: template.metadata.language }) // 只在原本有language字段时才保留
-          }
-        };
-
-        await this.saveTemplate(userTemplate);
-        console.log(`Imported template: ${finalTemplateId} (${finalTemplateName})`);
-      } catch (error) {
-        console.warn('Failed to import template:', error);
-        failedTemplates.push({ template, error: error as Error });
-      }
-    }
-
-    if (failedTemplates.length > 0) {
-      console.warn(`Failed to import ${failedTemplates.length} templates`);
-      // 不抛出错误，允许部分成功的导入
-    }
+    // User templates are stored under one key, so replace them in one write.
+    await this.persistUserTemplates(importedTemplates);
   }
 
   /**
@@ -441,14 +465,12 @@ export class TemplateManager implements ITemplateManager {
    * 验证单个模板配置
    */
   private validateSingleTemplate(item: any): boolean {
-    return typeof item === 'object' &&
-      item !== null &&
-      typeof item.id === 'string' &&
-      typeof item.name === 'string' &&
-      typeof item.content === 'string' &&
-      typeof item.isBuiltin === 'boolean' &&
-      typeof item.metadata === 'object' &&
-      item.metadata !== null;
+    try {
+      this.normalizeImportedTemplate(item);
+      return true;
+    } catch {
+      return false;
+    }
   }
 }
 
diff --git a/packages/core/src/utils/error.ts b/packages/core/src/utils/error.ts
index c73a8ce8..80fb10c9 100644
--- a/packages/core/src/utils/error.ts
+++ b/packages/core/src/utils/error.ts
@@ -18,6 +18,13 @@ export function isStructuredErrorLike(value: unknown): value is StructuredErrorL
   return isRecord(value) && typeof value.code === 'string'
 }
 
+const ERROR_CODE_MARKER_PATTERN = /\[error\.[^\]]+\]\s*/g
+
+/** Remove structured error-code markers before nesting a message in user-facing details. */
+export function stripErrorCodeMarkers(message: string): string {
+  return message.replace(ERROR_CODE_MARKER_PATTERN, '')
+}
+
 /**
  * Normalize unknown values into an Error instance while preserving `{ code, params }`
  * when available (e.g., errors crossing IPC boundaries).
diff --git a/packages/core/tests/unit/data/manager.test.ts b/packages/core/tests/unit/data/manager.test.ts
index 52227610..7b7bcfd5 100644
--- a/packages/core/tests/unit/data/manager.test.ts
+++ b/packages/core/tests/unit/data/manager.test.ts
@@ -8,6 +8,7 @@ import { IPreferenceService } from '../../../src/services/preference/types';
 import { ContextRepo } from '../../../src/services/context/types';
 import { MemoryStorageProvider } from '../../../src/services/storage/memoryStorageProvider';
 import { DATA_ERROR_CODES } from '../../../src/constants/error-codes';
+import { TemplateStorageError, TemplateValidationError } from '../../../src/services/template/errors';
 
 describe('DataManager', () => {
   let dataManager: DataManager;
@@ -214,6 +215,38 @@ describe('DataManager', () => {
         .rejects.toMatchObject({ code: DATA_ERROR_CODES.INVALID_JSON });
     });
 
+    it('should not leak inner error-code placeholders into the aggregate details', async () => {
+      // Cover markers at both the leading and nested positions.
+      const leadingMarker = new TemplateStorageError('Failed to save user templates: Storage error');
+      expect(leadingMarker.message).toMatch(/^\[error\.template\.storage\]/);
+
+      const nestedMarker = new Error(
+        `Invalid template data at index 0: ${new TemplateValidationError('Template validation failed: content: Too small').message}`
+      );
+      expect(nestedMarker.message).toContain('[error.template.validation]');
+      expect(nestedMarker.message).not.toMatch(/^\[error\./);
+
+      const importData = {
+        version: 1,
+        data: {
+          userTemplates: [{ id: 'tpl1', name: 'T', content: 'c', isBuiltin: false, metadata: { templateType: 'optimize', version: '1.0', lastModified: 0 } }],
+        },
+      };
+      const payload = JSON.stringify(importData);
+
+      for (const innerError of [leadingMarker, nestedMarker]) {
+        vi.mocked(mockTemplateManager.importData).mockRejectedValue(innerError);
+
+        const error = await dataManager.importAllData(payload).catch((reason: unknown) => reason) as {
+          code?: string;
+          params?: { details?: string };
+        };
+        expect(error.code).toBe(DATA_ERROR_CODES.IMPORT_PARTIAL_FAILED);
+        expect(error.params?.details).toContain('Failed to import userTemplates');
+        expect(error.params?.details).not.toContain('[error.');
+      }
+    });
+
     it('should throw an error for data without a "data" property in new format', async () => {
       await expect(dataManager.importAllData(JSON.stringify({ version: 1 })))
         .rejects.toMatchObject({ code: DATA_ERROR_CODES.INVALID_FORMAT });
diff --git a/packages/core/tests/unit/template/import-export.test.ts b/packages/core/tests/unit/template/import-export.test.ts
index 12c9531d..2407abb7 100644
--- a/packages/core/tests/unit/template/import-export.test.ts
+++ b/packages/core/tests/unit/template/import-export.test.ts
@@ -4,6 +4,7 @@ import { Template } from '../../../src/services/template/types';
 import { MemoryStorageProvider } from '../../../src/services/storage/memoryStorageProvider';
 import { TemplateLanguageService } from '../../../src/services/template/languageService';
 import { PreferenceService } from '../../../src/services/preference/service';
+import { IMPORT_EXPORT_ERROR_CODES } from '../../../src/constants/error-codes';
 
 describe('TemplateManager Import/Export', () => {
   let templateManager: TemplateManager;
@@ -244,12 +245,164 @@ describe('TemplateManager Import/Export', () => {
       expect(importedTemplate?.metadata.lastModified).toBeGreaterThan(0); // 应该被设置
     });
 
-    it('should skip invalid templates', async () => {
+    it('should reject corrupt metadata types instead of silently defaulting them', async () => {
+      // Invalid metadata containers must not be normalized into valid defaults.
+      const existingTemplate: Template = {
+        id: 'existing-template',
+        name: 'Existing Template',
+        content: 'Existing content',
+        isBuiltin: false,
+        metadata: {
+          version: '1.0.0',
+          lastModified: Date.now(),
+          templateType: 'optimize',
+          author: 'User'
+        }
+      };
+      await templateManager.saveTemplate(existingTemplate);
+
+      const corruptShapes: Array<[string, unknown]> = [
+        ['null', null],
+        ['string', 'corrupt'],
+        ['array', []],
+        ['number', 42],
+        ['boolean', true],
+      ];
+
+      for (const [label, metadata] of corruptShapes) {
+        const item = {
+          id: 'corrupt-template',
+          name: `Corrupt metadata (${label})`,
+          content: 'Corrupt content',
+          isBuiltin: false,
+          metadata
+        };
+
+        expect(await templateManager.validateData([item])).toBe(false);
+        await expect(templateManager.importData([item])).rejects.toMatchObject({
+          code: IMPORT_EXPORT_ERROR_CODES.VALIDATION_ERROR,
+          message: expect.stringContaining(
+            'Template metadata must be a non-array object when present'
+          )
+        });
+      }
+
+      // The corrupt batches must not have replaced the existing user templates.
+      const userTemplates = (await templateManager.listTemplates())
+        .filter(template => !template.isBuiltin);
+      expect(userTemplates).toHaveLength(1);
+      expect(userTemplates[0].id).toBe('existing-template');
+    });
+
+    it('should treat absent metadata exactly like an empty metadata object', async () => {
+      const absent = { id: 'absent-metadata', name: 'Absent', content: 'Content', isBuiltin: false };
+      const empty = {
+        id: 'empty-metadata',
+        name: 'Empty',
+        content: 'Content',
+        isBuiltin: false,
+        metadata: {}
+      };
+
+      expect(await templateManager.validateData([absent])).toBe(true);
+      expect(await templateManager.validateData([empty])).toBe(true);
+
+      await templateManager.importData([absent, empty]);
+
+      const imported = (await templateManager.listTemplates())
+        .filter(template => !template.isBuiltin);
+      expect(imported).toHaveLength(2);
+
+      const [a, e] = ['absent-metadata', 'empty-metadata']
+        .map(id => imported.find(template => template.id === id));
+      for (const template of [a, e]) {
+        expect(template?.metadata.version).toBe('1.0.0');
+        expect(template?.metadata.templateType).toBe('optimize');
+        expect(template?.metadata.author).toBe('User');
+        expect(template?.metadata.lastModified).toBeGreaterThan(0);
+      }
+      expect(Object.keys(a!.metadata).sort()).toEqual(Object.keys(e!.metadata).sort());
+    });
+
+    it('should align preflight validation with import normalization and ID rules', async () => {
+      const incompleteMetadata = [
+        {
+          id: 'legacy-template',
+          name: 'Legacy Template',
+          content: 'Legacy content',
+          isBuiltin: false,
+          metadata: {
+            author: 'User'
+          }
+        }
+      ];
+      const invalidId = [
+        {
+          id: 'INVALID-ID',
+          name: 'Invalid ID Template',
+          content: 'Invalid content',
+          isBuiltin: false,
+          metadata: {
+            version: '1.0.0',
+            lastModified: Date.now(),
+            templateType: 'optimize',
+            author: 'User'
+          }
+        }
+      ];
+
+      expect(await templateManager.validateData(incompleteMetadata)).toBe(true);
+      expect(await templateManager.validateData(invalidId)).toBe(false);
+    });
+
+    it('should import advanced templates with message-array content', async () => {
+      const messages: Template['content'] = [
+        { role: 'system', content: 'You are a prompt optimizer.' },
+        { role: 'user', content: '{{originalPrompt}}' }
+      ];
+      const importData: Template[] = [
+        {
+          id: 'advanced-template',
+          name: 'Advanced Template',
+          content: messages,
+          isBuiltin: false,
+          metadata: {
+            version: '1.0.0',
+            lastModified: Date.now(),
+            templateType: 'optimize',
+            author: 'User'
+          }
+        }
+      ];
+
+      expect(await templateManager.validateData(importData)).toBe(true);
+      await templateManager.importData(importData);
+
+      const importedTemplate = (await templateManager.listTemplates())
+        .find(template => template.id === 'advanced-template');
+      expect(importedTemplate?.content).toEqual(messages);
+    });
+
+    it('should reject invalid templates without deleting existing templates', async () => {
+      const existingTemplate: Template = {
+        id: 'existing-template',
+        name: 'Existing Template',
+        content: 'Existing content',
+        isBuiltin: false,
+        metadata: {
+          version: '1.0.0',
+          lastModified: Date.now(),
+          templateType: 'optimize',
+          author: 'User'
+        }
+      };
+      await templateManager.saveTemplate(existingTemplate);
+
       const importData = [
         {
-          // 缺少id字段
-          name: 'Invalid Template 1',
-          content: 'Invalid content 1',
+          // Missing id field.
+          name: 'Invalid Template',
+          content: 'Invalid content',
           isBuiltin: false,
           metadata: {
             version: '1.0.0',
@@ -272,22 +425,21 @@ describe('TemplateManager Import/Export', () => {
         }
       ];
 
-      // 应该不抛出错误，只是跳过无效模板
-      await expect(templateManager.importData(importData)).resolves.not.toThrow();
+      await expect(templateManager.importData(importData))
+        .rejects.toThrow('Invalid template data at index 0');
 
-      // 验证有效模板被导入
-      const afterImport = await templateManager.listTemplates();
-      const userTemplates = afterImport.filter(t => !t.isBuiltin);
-      expect(userTemplates.length).toBe(1);
-      expect(userTemplates[0].id).toBe('valid-template');
+      const userTemplates = (await templateManager.listTemplates())
+        .filter(template => !template.isBuiltin);
+      expect(userTemplates).toHaveLength(1);
+      expect(userTemplates[0].id).toBe('existing-template');
     });
 
-    it('should handle import errors gracefully', async () => {
-      const importData: Template[] = [
+    it('should not embed inner error-code markers in the rejection details', async () => {
+      const importData = [
         {
-          id: 'error-template',
-          name: 'Error Template',
-          content: 'Error content',
+          id: 'schema-fail',
+          name: 'Schema Fail',
+          content: '', // fails templateSchema: content must be non-empty
           isBuiltin: false,
           metadata: {
             version: '1.0.0',
@@ -298,11 +450,59 @@ describe('TemplateManager Import/Export', () => {
         }
       ];
 
-      // 模拟saveTemplate错误
-      vi.spyOn(templateManager, 'saveTemplate').mockRejectedValue(new Error('Save template error'));
+      const error = await templateManager.importData(importData)
+        .catch((reason: unknown) => reason) as {
+          code?: string;
+          message?: string;
+          params?: { details?: string };
+        };
+      expect(error.code).toBe(IMPORT_EXPORT_ERROR_CODES.VALIDATION_ERROR);
+      expect(error.message).toContain('Invalid template data at index 0');
+      expect(error.message).toContain('Template validation failed');
+      expect(error.message).not.toContain('[error.');
+      expect(error.params?.details).not.toContain('[error.');
+    });
 
-      // 应该不抛出错误，只是记录失败
-      await expect(templateManager.importData(importData)).resolves.not.toThrow();
+    it('should preserve existing templates when the replacement write fails', async () => {
+      const existingTemplate: Template = {
+        id: 'existing-template',
+        name: 'Existing Template',
+        content: 'Existing content',
+        isBuiltin: false,
+        metadata: {
+          version: '1.0.0',
+          lastModified: Date.now(),
+          templateType: 'optimize',
+          author: 'User'
+        }
+      };
+      await templateManager.saveTemplate(existingTemplate);
+
+      const importData: Template[] = [
+        {
+          id: 'replacement-template',
+          name: 'Replacement Template',
+          content: 'Replacement content',
+          isBuiltin: false,
+          metadata: {
+            version: '1.0.0',
+            lastModified: Date.now(),
+            templateType: 'optimize',
+            author: 'User'
+          }
+        }
+      ];
+      const setItemSpy = vi.spyOn(storageProvider, 'setItem')
+        .mockRejectedValueOnce(new Error('Storage error'));
+
+      await expect(templateManager.importData(importData))
+        .rejects.toThrow('Failed to save user templates');
+      setItemSpy.mockRestore();
+
+      const userTemplates = (await templateManager.listTemplates())
+        .filter(template => !template.isBuiltin);
+      expect(userTemplates).toHaveLength(1);
+      expect(userTemplates[0].id).toBe('existing-template');
     });
   });
 
diff --git a/packages/desktop/main.js b/packages/desktop/main.js
index 7f4e7a0b..d2a71317 100644
--- a/packages/desktop/main.js
+++ b/packages/desktop/main.js
@@ -402,7 +402,7 @@ function setupPreferenceHandlers() {
 
   ipcMain.handle('preference-getDataType', async (event) => {
     try {
-      const result = preferenceService.getDataType();
+      const result = await preferenceService.getDataType();
       return createSuccessResponse(result);
     } catch (error) {
       return createErrorResponse(error);
@@ -1453,7 +1453,7 @@ function setupIPC() {
 
   ipcMain.handle('model-getDataType', async (event) => {
     try {
-      const result = modelManager.getDataType();
+      const result = await modelManager.getDataType();
       return createSuccessResponse(result);
     } catch (error) {
       return createErrorResponse(error);
@@ -1575,7 +1575,7 @@ function setupIPC() {
 
   ipcMain.handle('template-getDataType', async (event) => {
     try {
-      const result = templateManager.getDataType();
+      const result = await templateManager.getDataType();
       return createSuccessResponse(result);
     } catch (error) {
       return createErrorResponse(error);
@@ -1586,7 +1586,7 @@ function setupIPC() {
     try {
       // 清理Vue响应式对象，防止IPC序列化错误
       const safeData = safeSerialize(data);
-      const result = templateManager.validateData(safeData);
+      const result = await templateManager.validateData(safeData);
       return createSuccessResponse(result);
     } catch (error) {
       return createErrorResponse(error);
@@ -1623,7 +1623,7 @@ function setupIPC() {
 
   ipcMain.handle('template-getSupportedLanguages', async (event, template) => {
     try {
-      const result = templateManager.getSupportedLanguages(template);
+      const result = await templateManager.getSupportedLanguages(template);
       return createSuccessResponse(result);
     } catch (error) {
       return createErrorResponse(error);
@@ -1751,7 +1751,7 @@ function setupIPC() {
 
   ipcMain.handle('history-getDataType', async (event) => {
     try {
-      const result = historyManager.getDataType();
+      const result = await historyManager.getDataType();
       return createSuccessResponse(result);
     } catch (error) {
       return createErrorResponse(error);
@@ -1904,7 +1904,7 @@ function setupIPC() {
 
   ipcMain.handle('context-getDataType', async (event) => {
     try {
-      const result = contextRepo.getDataType();
+      const result = await contextRepo.getDataType();
       return createSuccessResponse(result);
     } catch (error) {
       return createErrorResponse(error);
diff --git a/packages/ui/src/components/DataManager.vue b/packages/ui/src/components/DataManager.vue
index 1e3fe8f1..3d28ad32 100644
--- a/packages/ui/src/components/DataManager.vue
+++ b/packages/ui/src/components/DataManager.vue
@@ -826,6 +826,7 @@ import {
 } from '../utils/remote-snapshot-backup'
 import { recordDataBackupCompleted } from '../utils/data-backup-reminder'
 import { openExternalUrl } from '../utils/open-external-url'
+import { formatErrorSummary } from '../utils/error'
 
 interface Props {
   show: boolean
@@ -1949,7 +1950,7 @@ const handleImport = async () => {
     clearSelectedFile()
   } catch (error) {
     console.error('Import failed:', error)
-    toast.error(`${t('dataManager.import.failed')}: ${(error as Error).message}`)
+    toast.error(formatErrorSummary(t('dataManager.import.failed'), error))
   } finally {
     isImporting.value = false
   }