feat: 新增 Tools 页面并重构 Skill 页面

- 添加 Tools.vue 工具管理页面
- 重构 Skill.vue 代码
- 更新路由和侧边栏导航

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/src/router/index.ts

@@ -5,7 +5,7 @@ import Chat from '@/views/Chat.vue'
 import Agents from '@/views/Agents.vue'
 import Team from '@/views/Team.vue'
 import Skill from '@/views/Skill.vue'
-import ModelAPIs from '@/views/ModelAPIs.vue'
+import Tools from '@/views/Tools.vue'
 import Database from '@/views/Database.vue'
 import Script from '@/views/Script.vue'
 import Plan from '@/views/Plan.vue'
@@ -49,9 +49,9 @@ const router = createRouter({
       component: Skill
     },
     {
-      path: '/model-apis',
-      name: 'model-apis',
-      component: ModelAPIs
+      path: '/tools',
+      name: 'tools',
+      component: Tools
     },
     {
       path: '/database',