fix(desktop): 功能验证 6 项缺陷修复

- ISS-002: SkillInfoResponse 增加 source/path 字段，修复技能系统显示 0 个
- ISS-003: Sidebar 添加自动化/技能市场导航入口 + App 返回按钮
- ISS-004: SaaS fetchAvailableModels 添加 .catch() 防限流崩溃
- ISS-006: SaaSSettings/PricingPage 包裹 ErrorBoundary 防白屏
- ISS-008: listModels 加载 localStorage 自定义模型，修复仅显示 1 个模型
- configStore listSkills 映射添加 source/path 转发

desktop/src-tauri/src/kernel_commands/skill.rs

@@ -30,6 +30,14 @@ pub struct SkillInfoResponse {
     pub enabled: bool,
     pub triggers: Vec<String>,
     pub category: Option<String>,
+    #[serde(default = "default_source")]
+    pub source: String,
+    #[serde(default)]
+    pub path: Option<String>,
+}
+
+fn default_source() -> String {
+    "builtin".to_string()
 }
 
 impl From<zclaw_skills::SkillManifest> for SkillInfoResponse {
@@ -45,6 +53,8 @@ impl From<zclaw_skills::SkillManifest> for SkillInfoResponse {
             enabled: manifest.enabled,
             triggers: manifest.triggers,
             category: manifest.category,
+            source: "builtin".to_string(),
+            path: None,
         }
     }
 }

desktop/src/App.tsx

@@ -486,6 +486,16 @@ function App() {
                 animate="animate"
                 className="h-full overflow-y-auto"
               >
+                <div className="sticky top-0 z-10 flex items-center gap-2 px-4 py-2 bg-white/80 dark:bg-gray-900/80 backdrop-blur-sm border-b border-gray-200 dark:border-gray-800">
+                  <button
+                    onClick={() => handleMainViewChange('chat')}
+                    className="p-1.5 hover:bg-black/5 dark:hover:bg-white/5 rounded-md transition-colors text-gray-600 dark:text-gray-400"
+                    title="返回聊天"
+                  >
+                    <svg xmlns="http://www.w3.org/2000/svg" className="w-4 h-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="m15 18-6-6 6-6"/></svg>
+                  </button>
+                  <span className="text-sm font-medium text-gray-900 dark:text-gray-100">自动化</span>
+                </div>
                 <AutomationPanel />
               </motion.div>
             ) : mainContentView === 'skills' ? (
@@ -495,7 +505,19 @@ function App() {
                 animate="animate"
                 className="h-full overflow-hidden"
               >
+                <div className="flex items-center gap-2 px-4 py-2 border-b border-gray-200 dark:border-gray-800">
+                  <button
+                    onClick={() => handleMainViewChange('chat')}
+                    className="p-1.5 hover:bg-black/5 dark:hover:bg-white/5 rounded-md transition-colors text-gray-600 dark:text-gray-400"
+                    title="返回聊天"
+                  >
+                    <svg xmlns="http://www.w3.org/2000/svg" className="w-4 h-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="m15 18-6-6 6-6"/></svg>
+                  </button>
+                  <span className="text-sm font-medium text-gray-900 dark:text-gray-100">技能市场</span>
+                </div>
+                <div className="h-[calc(100%-40px)] overflow-auto">
                   <SkillMarket />
+                </div>
               </motion.div>
             ) : (
               <ChatArea />

desktop/src/components/SaaS/SaaSStatus.tsx

@@ -23,7 +23,9 @@ export function SaaSStatus({ isLoggedIn, account, saasUrl, onLogout, onLogin }:
 
   useEffect(() => {
     if (isLoggedIn) {
-      fetchAvailableModels();
+      fetchAvailableModels().catch(() => {
+        // Silently handle SaaS API errors — they should not crash the app
+      });
     }
   }, [isLoggedIn, fetchAvailableModels]);
 

desktop/src/components/Settings/SettingsLayout.tsx

@@ -41,6 +41,7 @@ import { SecureStorage } from './SecureStorage';
 import { VikingPanel } from '../VikingPanel';
 import { SaaSSettings } from '../SaaS/SaaSSettings';
 import { PricingPage } from '../SaaS/PricingPage';
+import { ErrorBoundary } from '../ui/ErrorBoundary';
 
 interface SettingsLayoutProps {
   onBack: () => void;
@@ -105,8 +106,20 @@ export function SettingsLayout({ onBack }: SettingsLayoutProps) {
       case 'workspace': return <Workspace />;
       case 'privacy': return <Privacy />;
       case 'storage': return <SecureStorage />;
-      case 'saas': return <SaaSSettings />;
-      case 'billing': return <PricingPage />;
+      case 'saas': return (
+        <ErrorBoundary
+          fallback={<div className="p-6 text-center text-gray-500">SaaS 平台加载失败，请稍后重试</div>}
+        >
+          <SaaSSettings />
+        </ErrorBoundary>
+      );
+      case 'billing': return (
+        <ErrorBoundary
+          fallback={<div className="p-6 text-center text-gray-500">计费信息加载失败，请稍后重试</div>}
+        >
+          <PricingPage />
+        </ErrorBoundary>
+      );
       case 'security': return (
         <div className="space-y-6">
           <div>

desktop/src/components/Sidebar.tsx

@@ -1,7 +1,7 @@
 import { useState } from 'react';
 import { motion, AnimatePresence } from 'framer-motion';
 import {
-  SquarePen, MessageSquare, Bot, Search, X, Settings
+  SquarePen, MessageSquare, Bot, Search, X, Settings, Zap, Sparkles
 } from 'lucide-react';
 import { ConversationList } from './ConversationList';
 import { CloneManager } from './CloneManager';
@@ -33,11 +33,7 @@ export function Sidebar({
 
   const handleNavClick = (tab: Tab) => {
     setActiveTab(tab);
-    if (tab === 'clones') {
     onMainViewChange?.('chat');
-    } else {
-      onMainViewChange?.('chat');
-    }
   };
 
   return (
@@ -85,6 +81,24 @@ export function Sidebar({
           <Bot className="w-4 h-4" />
           智能体
         </button>
+
+        {/* Divider between primary nav and secondary tools */}
+        <div className="mx-1 my-1 border-t border-[#e8e6e1]/40 dark:border-gray-800" />
+
+        <button
+          onClick={() => onMainViewChange?.('automation')}
+          className="w-full flex items-center gap-3 px-3 py-2 rounded-lg text-sm text-gray-600 dark:text-gray-400 hover:bg-black/5 dark:hover:bg-white/5 transition-colors"
+        >
+          <Zap className="w-4 h-4" />
+          自动化
+        </button>
+        <button
+          onClick={() => onMainViewChange?.('skills')}
+          className="w-full flex items-center gap-3 px-3 py-2 rounded-lg text-sm text-gray-600 dark:text-gray-400 hover:bg-black/5 dark:hover:bg-white/5 transition-colors"
+        >
+          <Sparkles className="w-4 h-4" />
+          技能市场
+        </button>
       </div>
 
       {/* Divider */}

desktop/src/lib/kernel-skills.ts

@@ -20,6 +20,8 @@ type SkillItem = {
   enabled: boolean;
   triggers: string[];
   category?: string;
+  source?: string;
+  path?: string;
 };
 
 /** Skill list container shared by list/refresh responses. */

desktop/src/store/configStore.ts

@@ -643,27 +643,26 @@ function createConfigClientFromKernel(client: KernelClient): ConfigStoreClient {
         const result = await client.listSkills();
         if (result?.skills) {
           return {
-            skills: result.skills.map((s) => ({
+            skills: result.skills.map((s: { id: string; name: string; description?: string; version: string; capabilities?: string[]; tags?: string[]; mode: string; enabled?: boolean; triggers?: string[]; category?: string; source?: string; path?: string }) => ({
               id: s.id,
               name: s.name,
               description: s.description || '',
               version: s.version,
-              // Use capabilities directly
               capabilities: s.capabilities || [],
               tags: s.tags || [],
               mode: s.mode,
-              // Map triggers to the expected format
               triggers: (s.triggers || []).map((t: string) => ({
                 type: 'keyword',
                 pattern: t,
               })),
-              // Create actions from capabilities for UI display
               actions: (s.capabilities || []).map((cap: string) => ({
                 type: cap,
                 params: undefined,
               })),
               enabled: s.enabled ?? true,
               category: s.category,
+              source: (s.source as 'builtin' | 'extra') || 'builtin',
+              path: s.path || undefined,
             })),
           };
         }
@@ -753,13 +752,27 @@ function createConfigClientFromKernel(client: KernelClient): ConfigStoreClient {
     listModels: async () => {
       try {
         const status = await client.status();
-        return {
-          models: status.defaultModel ? [{
+        const defaultModel = status.defaultModel ? [{
           id: status.defaultModel as string,
           name: status.defaultModel as string,
           provider: (status.defaultProvider as string) || 'default',
-          }] : [],
-        };
+        }] : [];
+        // Load custom models from localStorage
+        const customModels: Array<{ id: string; name: string; provider?: string }> = [];
+        try {
+          const raw = localStorage.getItem('zclaw-custom-models');
+          if (raw) {
+            const parsed = JSON.parse(raw);
+            if (Array.isArray(parsed)) {
+              for (const m of parsed) {
+                if (m.id && m.name) {
+                  customModels.push({ id: m.id, name: m.name, provider: m.provider || 'custom' });
+                }
+              }
+            }
+          }
+        } catch { /* ignore parse errors */ }
+        return { models: [...defaultModel, ...customModels] };
       } catch {
         return { models: [] };
       }