fix(butler): wire verification gaps — pain storage init, cold start, UI mode switches

- Call init_pain_storage() in Tauri .setup() so pain persistence activates on boot
- Integrate useColdStart hook into FirstConversationPrompt for auto-greeting
- Add UI mode toggle section to Settings/General (already had imports)
- Add "简洁" mode switch-back button to TopBar in professional layout
- Update SemanticSkillRouter @reserved annotation to reflect active status

crates/zclaw-skills/src/semantic_router.rs

@@ -5,9 +5,8 @@
 //! 2. Optional embedding similarity (when an Embedder is configured)
 //! 3. Optional LLM fallback for ambiguous cases
 //!
-//! **@reserved** — This module is fully implemented (719 lines, 200+ lines of tests)
+//! **Active** — Used by `ButlerRouterMiddleware` (zclaw-runtime) for keyword-based routing.
-//! but NOT yet wired into the message pipeline. It will be activated in Phase 3
+//! The full TF-IDF + embedding pipeline can be integrated via `with_router()` when needed.
-//! when the "butler mode" semantic auto-routing feature is enabled. Do NOT delete.
 
 use std::collections::HashMap;
 use std::sync::Arc;

desktop/src-tauri/src/lib.rs

@@ -155,6 +155,25 @@ pub fn run() {
                     .expect("In-memory SQLite should never fail")
             });
             app.manage(persistence);
+
+            // Initialize pain point persistence (SQLite-backed).
+            // Must complete before event loop starts so that pain aggregator
+            // has a valid storage layer for dual-write operations.
+            {
+                let app_dir = app.path().app_data_dir().expect("Failed to get app data dir");
+                let pain_db_dir = app_dir.join("intelligence");
+                std::fs::create_dir_all(&pain_db_dir).expect("Failed to create intelligence dir");
+
+                let db_path = pain_db_dir.join("pain.db");
+                let db_url = format!("sqlite:{}", db_path.display());
+                let pool = rt.block_on(sqlx::SqlitePool::connect(&db_url))
+                    .expect("Failed to connect pain storage SQLite pool");
+
+                if let Err(e) = rt.block_on(intelligence::pain_aggregator::init_pain_storage(pool)) {
+                    tracing::error!("[PainStorage] Init failed: {}, pain points will not persist", e);
+                }
+            }
+
             Ok(())
         })
         .invoke_handler(tauri::generate_handler![

desktop/src/components/FirstConversationPrompt.tsx

@@ -7,6 +7,7 @@
  * - Horizontal quick-action chips (colored pills)
  * - Clean, minimal aesthetic
  */
+import { useEffect } from 'react';
 import { motion } from 'framer-motion';
 import {
   Sparkles,
@@ -21,6 +22,7 @@ import {
   generateWelcomeMessage,
   getScenarioById,
 } from '../lib/personality-presets';
+import { useColdStart } from '../lib/use-cold-start';
 import type { Clone } from '../store/agentStore';
 import { useChatStore } from '../store/chatStore';
 import { useClassroomStore } from '../store/classroomStore';
@@ -56,6 +58,16 @@ export function FirstConversationPrompt({
   onSelectSuggestion,
 }: FirstConversationPromptProps) {
   const chatMode = useChatStore((s) => s.chatMode);
+  const { isColdStart, phase, greetingSent, markGreetingSent, getGreetingMessage } = useColdStart();
+
+  // Cold start: auto-trigger greeting for first-time users
+  useEffect(() => {
+    if (isColdStart && phase === 'idle' && !greetingSent) {
+      const greeting = getGreetingMessage(clone.nickname || clone.name, clone.emoji);
+      onSelectSuggestion?.(greeting);
+      markGreetingSent();
+    }
+  }, [isColdStart, phase, greetingSent, clone.nickname, clone.name, clone.emoji, onSelectSuggestion, markGreetingSent, getGreetingMessage]);
 
   const modeGreeting: Record<string, string> = {
     flash: '快速回答，即时响应',

desktop/src/components/Settings/General.tsx

@@ -3,6 +3,7 @@ import { useConnectionStore } from '../../store/connectionStore';
 import { useConfigStore } from '../../store/configStore';
 import { useConversationStore } from '../../store/chat/conversationStore';
 import { useSaaSStore } from '../../store/saasStore';
+import { useUIModeStore } from '../../store/uiModeStore';
 import { getStoredGatewayToken, setStoredGatewayToken } from '../../lib/gateway-client';
 import { silentErrorHandler } from '../../lib/error-utils';
 
@@ -20,6 +21,8 @@ export function General() {
   const [showToolCalls, setShowToolCalls] = useState(quickConfig.showToolCalls ?? false);
   const [gatewayToken, setGatewayToken] = useState(getStoredGatewayToken());
   const [isSaving, setIsSaving] = useState(false);
+  const mode = useUIModeStore((s) => s.mode);
+  const setMode = useUIModeStore((s) => s.setMode);
 
   const connected = connectionState === 'connected';
   const connecting = connectionState === 'connecting' || connectionState === 'reconnecting';
@@ -185,6 +188,35 @@ export function General() {
           </div>
           <Toggle checked={showToolCalls} onChange={handleShowToolCallsChange} disabled={isSaving} />
         </div>
+
+        <div>
+          <div className="text-sm font-medium text-gray-900">界面模式</div>
+          <div className="text-xs text-gray-500 mt-0.5 mb-2">切换简洁界面或完整专业界面。</div>
+          <div className="flex gap-3">
+            <button
+              onClick={() => setMode('simple')}
+              className={`flex-1 p-3 rounded-lg border text-sm text-center transition-colors ${
+                mode === 'simple'
+                  ? 'border-orange-500 bg-orange-50 text-orange-700 dark:bg-orange-900/20 dark:text-orange-300'
+                  : 'border-gray-200 hover:bg-gray-50 dark:border-gray-700 dark:hover:bg-gray-800'
+              }`}
+            >
+              简洁模式
+              <p className="text-xs text-gray-500 mt-1">适合日常使用，只显示聊天窗口</p>
+            </button>
+            <button
+              onClick={() => setMode('professional')}
+              className={`flex-1 p-3 rounded-lg border text-sm text-center transition-colors ${
+                mode === 'professional'
+                  ? 'border-orange-500 bg-orange-50 text-orange-700 dark:bg-orange-900/20 dark:text-orange-300'
+                  : 'border-gray-200 hover:bg-gray-50 dark:border-gray-700 dark:hover:bg-gray-800'
+              }`}
+            >
+              专业模式
+              <p className="text-xs text-gray-500 mt-1">完整功能，包括侧边栏和工具面板</p>
+            </button>
+          </div>
+        </div>
       </div>
     </div>
   );

desktop/src/components/TopBar.tsx

@@ -1,5 +1,6 @@
-import { ClipboardList } from 'lucide-react';
+import { ClipboardList, Minimize2 } from 'lucide-react';
 import { Button } from './ui';
+import { useUIModeStore } from '../store/uiModeStore';
 
 interface TopBarProps {
   title: string;
@@ -32,6 +33,17 @@ export function TopBar({
 
       {/* 右侧按钮 */}
       <div className="flex items-center gap-1">
+        {/* 切换简洁模式 */}
+        <Button
+          variant="ghost"
+          size="sm"
+          onClick={() => useUIModeStore.getState().setMode('simple')}
+          className="flex items-center gap-2 text-gray-600 dark:text-gray-400 hover:text-gray-900 dark:hover:text-gray-100"
+          title="切换到简洁模式"
+        >
+          <Minimize2 className="w-4 h-4" />
+          <span className="text-sm">简洁</span>
+        </Button>
         {/* 详情按钮 */}
         {showDetailButton && onOpenDetail && (
           <Button