refactor(ai): 用知识库 V2 替换旧版 — 删除旧页面/API，菜单路径不变

- 删除旧版 AiKnowledgePage.tsx 和 api/ai/knowledge.ts
- V2 页面接管 /health/ai-knowledge 路由（不再用 -v2 后缀）
- 迁移 168 改为 UPDATE 旧菜单名称+component（而非新增菜单）
- routeConfig 和 App.tsx 路由声明同步更新

crates/erp-server/migration/src/m20260527_000168_ai_knowledge_v2_menu.rs

@@ -6,41 +6,17 @@ pub struct Migration;
 #[async_trait::async_trait]
 impl MigrationTrait for Migration {
     async fn up(&self, manager: &SchemaManager) -> Result<(), DbErr> {
-        // 安全插入：仅在 sys_menu 表存在且有 ai-knowledge 菜单时添加 V2 菜单
+        // 将旧版 AI 知识库菜单更新为 V2 版本
         let sql = r#"
             DO $$
             BEGIN
                 IF EXISTS (SELECT 1 FROM information_schema.tables WHERE table_schema = 'public' AND table_name = 'sys_menu') THEN
-                    INSERT INTO sys_menu (id, parent_id, name, path, icon, sort, permission, component, is_external, is_cached, status, visible, created_at, updated_at, deleted_at)
-                    SELECT
-                        gen_random_uuid(),
-                        parent_id,
-                        '知识库 V2',
-                        '/health/ai-knowledge-v2',
-                        'DatabaseOutlined',
-                        54,
-                        'ai.knowledge.list',
-                        'ai/KnowledgeV2Page',
-                        false,
-                        false,
-                        'active',
-                        true,
-                        now(),
-                        now(),
-                        NULL
-                    FROM sys_menu
-                    WHERE path = '/health/ai-knowledge' AND deleted_at IS NULL
-                    LIMIT 1
-                    ON CONFLICT DO NOTHING;
-
-                    IF FOUND THEN
-                        INSERT INTO sys_role_menu (role_id, menu_id)
-                        SELECT r.id, m.id
-                        FROM sys_role r, sys_menu m
-                        WHERE r.code = 'admin' AND r.deleted_at IS NULL
-                          AND m.path = '/health/ai-knowledge-v2' AND m.deleted_at IS NULL
-                        ON CONFLICT DO NOTHING;
-                    END IF;
+                    UPDATE sys_menu
+                    SET name = '知识库管理',
+                        icon = 'DatabaseOutlined',
+                        component = 'ai/KnowledgeV2Page',
+                        updated_at = now()
+                    WHERE path = '/health/ai-knowledge' AND deleted_at IS NULL;
                 END IF;
             END;
             $$ LANGUAGE plpgsql
@@ -59,7 +35,12 @@ impl MigrationTrait for Migration {
                 DO $$
                 BEGIN
                     IF EXISTS (SELECT 1 FROM information_schema.tables WHERE table_schema = 'public' AND table_name = 'sys_menu') THEN
-                        DELETE FROM sys_menu WHERE path = '/health/ai-knowledge-v2';
+                        UPDATE sys_menu
+                        SET name = 'AI 知识库',
+                            icon = 'BookOutlined',
+                            component = 'health/AiKnowledgePage',
+                            updated_at = now()
+                        WHERE path = '/health/ai-knowledge' AND deleted_at IS NULL;
                     END IF;
                 END;
                 $$ LANGUAGE plpgsql