refactor(knowledge-base): 统一默认目录并简化目录类型映射

- 将默认目录从"收集"和"笔记"调整为"笔记"和"Skill"
- 移除"收集"、"AI收藏"和"知识提炼"目录类型，统一使用"笔记"
- 更新知识提炼存储服务使用"笔记"目录
- 修改MCP工具默认目录为"笔记"
- 优化默认目录初始化逻辑，确保目录状态正确同步

packages/drawnix/src/mcp/tools/knowledge-base-tool.ts

@@ -209,7 +209,7 @@ export const kbCreateNoteTool: MCPTool = {
       },
       directoryName: {
         type: 'string',
-        description: '目录名称（不存在则自动创建），默认为"默认"',
+        description: '目录名称（不存在则自动创建），默认为"笔记"',
       },
       tags: {
         type: 'array',
@@ -252,7 +252,7 @@ export const kbCreateNoteTool: MCPTool = {
   execute: async (params: Record<string, unknown>): Promise<MCPResult> => {
     const title = params.title as string;
     const content = params.content as string;
-    const directoryName = (params.directoryName as string) || '默认';
+    const directoryName = (params.directoryName as string) || '笔记';
     const tags = params.tags as string[] | undefined;
     const sourceUrl = params.sourceUrl as string | undefined;
 

packages/drawnix/src/services/kb-knowledge-extraction/storage-service.ts

@@ -72,9 +72,9 @@ function mergeKnowledgeToMarkdown(
 /** 获取或创建"知识提炼"目录 */
 export async function getKnowledgeExtractionDirectory(): Promise<{ id: string; name: string }> {
   const dirs = await getAllDirectories();
-  const existing = dirs.find((d) => d.name === '知识提炼');
+  const existing = dirs.find((d) => d.name === '笔记');
   if (existing) return { id: existing.id, name: existing.name };
-  const newDir = await createDirectory('知识提炼');
+  const newDir = await createDirectory('笔记');
   return { id: newDir.id, name: newDir.name };
 }
 

packages/drawnix/src/services/kb-save-manager.ts

@@ -24,14 +24,11 @@ import type { KBNoteMeta, KBNoteMetadata } from '../types/knowledge-base.types';
 // ============================================
 
 /** 目录类型 */
-export type DirectoryType = 'collection' | 'note' | 'ai_chat' | 'knowledge_extraction';
+export type DirectoryType =  'note';
 
 /** 目录名称映射 */
 export const DIRECTORY_NAMES: Record<DirectoryType, string> = {
-  collection: '收集',
   note: '笔记',
-  ai_chat: 'AI收藏',
-  knowledge_extraction: '知识提炼',
 };
 
 /** 保存历史最大记录数 */
@@ -246,8 +243,7 @@ class KnowledgeSaveManager {
   // ============================================
 
   private _inferDirectoryType(item: SaveContentItem): DirectoryType {
-    if (item.contentType === 'ai_response') return 'ai_chat';
-    return 'collection';
+    return 'note';
   }
 
   private async _ensureDirectory(type: DirectoryType): Promise<string> {
@@ -445,7 +441,7 @@ class KnowledgeSaveManager {
       noteName: '',
       isNewNote: false,
       isDuplicate: false,
-      directoryType: 'collection',
+      directoryType: 'note',
       message,
       fingerprint: '',
       savedAt: Date.now(),

packages/drawnix/src/services/knowledge-base-service.ts

@@ -88,21 +88,44 @@ async function ensureDefaultDirectories(): Promise<void> {
   if (defaultDirsInitialized) return;
 
   const dirs = await getAllDirectories();
-  const hasDefaults = dirs.some((d) => d.isDefault);
-  if (!hasDefaults) {
-    const now = Date.now();
-    for (const def of KB_DEFAULT_DIRECTORIES) {
-      const dir: KBDirectory = {
+  const defaultDirNames = new Set(KB_DEFAULT_DIRECTORIES.map((d) => d.name));
+  const existingMap = new Map(dirs.map((d) => [d.name, d]));
+  const now = Date.now();
+
+  // 1. 确保默认目录存在且状态正确
+  for (const def of KB_DEFAULT_DIRECTORIES) {
+    const existing = existingMap.get(def.name);
+    if (existing) {
+      // 如果已存在但不是默认，更新为默认
+      if (!existing.isDefault) {
+        existing.isDefault = true;
+        existing.order = def.order; // 更新排序
+        existing.updatedAt = now;
+        await directoriesStore.setItem(existing.id, existing);
+      }
+    } else {
+      // 创建不存在的默认目录
+      const newDir: KBDirectory = {
         id: generateId(),
         name: def.name,
-        isDefault: def.isDefault,
+        isDefault: true,
         createdAt: now,
         updatedAt: now,
         order: def.order,
       };
+      await directoriesStore.setItem(newDir.id, newDir);
+    }
+  }
+
+  // 2. 将不再是默认的目录（如"收集"）取消默认状态
+  for (const dir of dirs) {
+    if (dir.isDefault && !defaultDirNames.has(dir.name)) {
+      dir.isDefault = false;
+      dir.updatedAt = now;
       await directoriesStore.setItem(dir.id, dir);
     }
   }
+
   defaultDirsInitialized = true;
 }
 

packages/drawnix/src/types/knowledge-base.types.ts

@@ -166,8 +166,8 @@ export const KB_DEFAULT_SORT: KBSortOptions = {
  * 默认目录列表
  */
 export const KB_DEFAULT_DIRECTORIES: Array<{ name: string; isDefault: boolean; order: number }> = [
-  { name: '收集', isDefault: true, order: 0 },
-  { name: '笔记', isDefault: true, order: 1 },
+  { name: '笔记', isDefault: true, order: 0 },
+  { name: 'Skill', isDefault: true, order: 1 },
 ];
 
 // ==================== 保存状态类型 ====================