diff --git a/electron/main.ts b/electron/main.ts
index bb6576f..46b96a9 100644
--- a/electron/main.ts
+++ b/electron/main.ts
@@ -660,17 +660,14 @@ function createImageViewerWindow(imagePath: string, liveVideoPath?: string) {
       nodeIntegration: false,
       webSecurity: false // 允许加载本地文件
     },
-    titleBarStyle: 'hidden',
-    titleBarOverlay: {
-      color: '#00000000',
-      symbolColor: '#ffffff',
-      height: 40
-    },
+    frame: false,
     show: false,
     backgroundColor: '#000000',
     autoHideMenuBar: true
   })
 
+  setupCustomTitleBarWindow(win)
+
   win.once('ready-to-show', () => {
     win.show()
   })
diff --git a/electron/services/chatService.ts b/electron/services/chatService.ts
index 6f104fd..3a6741a 100644
--- a/electron/services/chatService.ts
+++ b/electron/services/chatService.ts
@@ -367,6 +367,8 @@ class ChatService {
       })
     })
   }
+    })
+  }
 
   /**
    * 预热 media 数据库列表缓存（后台异步执行）
diff --git a/electron/services/wcdbCore.ts b/electron/services/wcdbCore.ts
index d664443..c118a79 100644
--- a/electron/services/wcdbCore.ts
+++ b/electron/services/wcdbCore.ts
@@ -190,8 +190,7 @@ export class WcdbCore {
     setTimeout(() => {
       if (!this.monitorCallback) return
 
-      this.monitorPipeClient = net.createConnection(this.monitorPipePath, () => {
-      })
+      this.monitorPipeClient = net.createConnection(this.monitorPipePath, () => {})
 
       let buffer = ''
       this.monitorPipeClient.on('data', (data: Buffer) => {
@@ -210,8 +209,7 @@ export class WcdbCore {
         }
       })
 
-      this.monitorPipeClient.on('error', () => {
-      })
+      this.monitorPipeClient.on('error', () => {})
 
       this.monitorPipeClient.on('close', () => {
         this.monitorPipeClient = null
diff --git a/src/components/GlobalSessionMonitor.tsx b/src/components/GlobalSessionMonitor.tsx
index 40d8243..a1abf71 100644
--- a/src/components/GlobalSessionMonitor.tsx
+++ b/src/components/GlobalSessionMonitor.tsx
@@ -46,7 +46,6 @@ export function GlobalSessionMonitor() {
             return () => {
                 removeListener()
             }
-        } else {
         }
         return () => { }
     }, [])
diff --git a/src/components/TitleBar.scss b/src/components/TitleBar.scss
index b90b64c..8c3c9b8 100644
--- a/src/components/TitleBar.scss
+++ b/src/components/TitleBar.scss
@@ -36,6 +36,8 @@
   font-size: 15px;
   font-weight: 500;
   color: var(--text-secondary);
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
 }
 
 .title-sidebar-toggle {
@@ -90,3 +92,55 @@
     color: #fff;
   }
 }
+
+.image-controls {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  margin-right: auto;
+  padding-left: 16px;
+  -webkit-app-region: no-drag;
+
+  button {
+    background: transparent;
+    border: none;
+    color: var(--text-secondary);
+    cursor: pointer;
+    padding: 6px;
+    border-radius: 4px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    transition: all 0.2s;
+
+    &:hover {
+      background: var(--bg-tertiary);
+      color: var(--text-primary);
+    }
+
+    &:disabled {
+      cursor: default;
+      opacity: 1;
+    }
+
+    &.live-play-btn.active {
+      background: rgba(var(--primary-rgb, 76, 132, 255), 0.16);
+      color: var(--primary, #4c84ff);
+    }
+  }
+
+  .scale-text {
+    min-width: 50px;
+    text-align: center;
+    color: var(--text-secondary);
+    font-size: 12px;
+    font-variant-numeric: tabular-nums;
+  }
+
+  .divider {
+    width: 1px;
+    height: 14px;
+    background: var(--border-color);
+    margin: 0 4px;
+  }
+}
diff --git a/src/components/TitleBar.tsx b/src/components/TitleBar.tsx
index d208eda..491a7ea 100644
--- a/src/components/TitleBar.tsx
+++ b/src/components/TitleBar.tsx
@@ -7,13 +7,17 @@ interface TitleBarProps {
   sidebarCollapsed?: boolean
   onToggleSidebar?: () => void
   showWindowControls?: boolean
+  customControls?: React.ReactNode
+  showLogo?: boolean
 }
 
 function TitleBar({
   title,
   sidebarCollapsed = false,
   onToggleSidebar,
-  showWindowControls = true
+  showWindowControls = true,
+  customControls,
+  showLogo = true
 }: TitleBarProps = {}) {
   const [isMaximized, setIsMaximized] = useState(false)
 
@@ -32,7 +36,7 @@ function TitleBar({
   return (
     <div className="title-bar">
       <div className="title-brand">
-        <img src="./logo.png" alt="WeFlow" className="title-logo" />
+        {showLogo && <img src="./logo.png" alt="WeFlow" className="title-logo" />}
         <span className="titles">{title || 'WeFlow'}</span>
         {onToggleSidebar ? (
           <button
@@ -46,6 +50,7 @@ function TitleBar({
           </button>
         ) : null}
       </div>
+      {customControls}
       {showWindowControls ? (
         <div className="title-window-controls">
           <button
diff --git a/src/pages/ChatPage.tsx b/src/pages/ChatPage.tsx
index 1422c54..559fc03 100644
--- a/src/pages/ChatPage.tsx
+++ b/src/pages/ChatPage.tsx
@@ -2981,8 +2981,8 @@ function ChatPage(props: ChatPageProps) {
     if (hasFoldedGroups && !visible.some(s => s.username.toLowerCase().includes('placeholder_foldgroup'))) {
       // 找到最新的折叠消息
       const latestFolded = foldedGroups.reduce((latest, current) => {
-        const latestTime = latest.sortTimestamp || latest.lastTimestamp || latest.timestamp
-        const currentTime = current.sortTimestamp || current.lastTimestamp || current.timestamp
+        const latestTime = latest.sortTimestamp || latest.lastTimestamp
+        const currentTime = current.sortTimestamp || current.lastTimestamp
         return currentTime > latestTime ? current : latest
       })
 
@@ -2990,19 +2990,19 @@ function ChatPage(props: ChatPageProps) {
         username: 'placeholder_foldgroup',
         displayName: '折叠的聊天',
         summary: `${latestFolded.displayName || latestFolded.username}: ${latestFolded.summary}`,
-        timestamp: latestFolded.timestamp,
-        sortTimestamp: latestFolded.sortTimestamp || latestFolded.lastTimestamp || latestFolded.timestamp,
-        lastTimestamp: latestFolded.lastTimestamp || latestFolded.sortTimestamp || latestFolded.timestamp,
+        type: 0,
+        sortTimestamp: latestFolded.sortTimestamp || latestFolded.lastTimestamp,
+        lastTimestamp: latestFolded.lastTimestamp || latestFolded.sortTimestamp,
+        lastMsgType: 0,
         unreadCount: foldedGroups.reduce((sum, s) => sum + (s.unreadCount || 0), 0),
         isMuted: false,
-        isFolded: false,
-        isGroup: true
+        isFolded: false
       }
 
       // 按时间戳插入到正确位置
-      const foldTime = foldEntry.sortTimestamp || foldEntry.lastTimestamp || foldEntry.timestamp
+      const foldTime = foldEntry.sortTimestamp || foldEntry.lastTimestamp
       const insertIndex = visible.findIndex(s => {
-        const sTime = s.sortTimestamp || s.lastTimestamp || s.timestamp
+        const sTime = s.sortTimestamp || s.lastTimestamp
         return sTime < foldTime
       })
       if (insertIndex === -1) {
diff --git a/src/pages/ImageWindow.scss b/src/pages/ImageWindow.scss
index c1d842d..4b9f48b 100644
--- a/src/pages/ImageWindow.scss
+++ b/src/pages/ImageWindow.scss
@@ -7,76 +7,6 @@
     overflow: hidden;
     user-select: none;
 
-    .title-bar {
-        height: 40px;
-        min-height: 40px;
-        display: flex;
-        justify-content: space-between;
-        align-items: center;
-        background: var(--bg-secondary);
-        border-bottom: 1px solid var(--border-color);
-        padding-right: 140px; // 为原生窗口控件留出空间
-
-        .window-drag-area {
-            flex: 1;
-            height: 100%;
-            -webkit-app-region: drag;
-        }
-
-        .title-bar-controls {
-            display: flex;
-            align-items: center;
-            gap: 8px;
-            -webkit-app-region: no-drag;
-            margin-right: 16px;
-
-            button {
-                background: transparent;
-                border: none;
-                color: var(--text-secondary);
-                cursor: pointer;
-                padding: 6px;
-                border-radius: 4px;
-                display: flex;
-                align-items: center;
-                justify-content: center;
-                transition: all 0.2s;
-
-                &:hover {
-                    background: var(--bg-tertiary);
-                    color: var(--text-primary);
-                }
-
-                &:disabled {
-                    cursor: default;
-                    opacity: 1;
-                }
-
-                &.live-play-btn {
-                    &.active {
-                        background: rgba(var(--primary-rgb, 76, 132, 255), 0.16);
-                        color: var(--primary, #4c84ff);
-                    }
-                }
-            }
-
-            .scale-text {
-                min-width: 50px;
-                text-align: center;
-                color: var(--text-secondary);
-                font-size: 12px;
-                font-variant-numeric: tabular-nums;
-            }
-
-            .divider {
-                width: 1px;
-                height: 14px;
-                background: var(--border-color);
-                margin: 0 4px;
-            }
-        }
-    }
-
     .image-viewport {
         flex: 1;
         display: flex;
diff --git a/src/pages/ImageWindow.tsx b/src/pages/ImageWindow.tsx
index e6b2e5d..6b9777e 100644
--- a/src/pages/ImageWindow.tsx
+++ b/src/pages/ImageWindow.tsx
@@ -2,6 +2,7 @@ import { useState, useEffect, useRef, useCallback } from 'react'
 import { useSearchParams } from 'react-router-dom'
 import { ZoomIn, ZoomOut, RotateCw, RotateCcw } from 'lucide-react'
 import { LivePhotoIcon } from '../components/LivePhotoIcon'
+import TitleBar from '../components/TitleBar'
 import './ImageWindow.scss'
 
 export default function ImageWindow() {
@@ -207,31 +208,35 @@ export default function ImageWindow() {
 
     return (
         <div className="image-window-container">
-            <div className="title-bar">
-                <div className="window-drag-area"></div>
-                <div className="title-bar-controls">
-                    {hasLiveVideo && (
-                        <>
-                            <button
-                                onClick={handlePlayLiveVideo}
-                                title={isPlayingLive ? '正在播放实况' : '播放实况 (空格)'}
-                                className={`live-play-btn ${isPlayingLive ? 'active' : ''}`}
-                                disabled={isPlayingLive}
-                            >
-                                <LivePhotoIcon size={16} />
-                                <span style={{ fontSize: 13, marginLeft: 4 }}>Live</span>
-                            </button>
-                            <div className="divider"></div>
-                        </>
-                    )}
-                    <button onClick={handleZoomOut} title="缩小 (-)"><ZoomOut size={16} /></button>
-                    <span className="scale-text">{Math.round(displayScale * 100)}%</span>
-                    <button onClick={handleZoomIn} title="放大 (+)"><ZoomIn size={16} /></button>
-                    <div className="divider"></div>
-                    <button onClick={handleRotateCcw} title="逆时针旋转"><RotateCcw size={16} /></button>
-                    <button onClick={handleRotate} title="顺时针旋转 (R)"><RotateCw size={16} /></button>
-                </div>
-            </div>
+            <TitleBar
+                title="图片查看"
+                showWindowControls={true}
+                showLogo={false}
+                customControls={
+                    <div className="image-controls">
+                        {hasLiveVideo && (
+                            <>
+                                <button
+                                    onClick={handlePlayLiveVideo}
+                                    title={isPlayingLive ? '正在播放实况' : '播放实况 (空格)'}
+                                    className={`live-play-btn ${isPlayingLive ? 'active' : ''}`}
+                                    disabled={isPlayingLive}
+                                >
+                                    <LivePhotoIcon size={16} />
+                                    <span style={{ fontSize: 13, marginLeft: 4 }}>Live</span>
+                                </button>
+                                <div className="divider"></div>
+                            </>
+                        )}
+                        <button onClick={handleZoomOut} title="缩小 (-)"><ZoomOut size={16} /></button>
+                        <span className="scale-text">{Math.round(displayScale * 100)}%</span>
+                        <button onClick={handleZoomIn} title="放大 (+)"><ZoomIn size={16} /></button>
+                        <div className="divider"></div>
+                        <button onClick={handleRotateCcw} title="逆时针旋转"><RotateCcw size={16} /></button>
+                        <button onClick={handleRotate} title="顺时针旋转 (R)"><RotateCw size={16} /></button>
+                    </div>
+                }
+            />
 
             <div
                 className="image-viewport"
diff --git a/src/pages/SettingsPage.tsx b/src/pages/SettingsPage.tsx
index 82526a5..db39015 100644
--- a/src/pages/SettingsPage.tsx
+++ b/src/pages/SettingsPage.tsx
@@ -1379,15 +1379,12 @@ function SettingsPage({ onClose }: SettingsPageProps = {}) {
             scheduleConfigSave('keys', () => syncCurrentKeys({ imageAesKey: value, wxid }))
           }}
         />
-        <div className="form-hint" style={{ color: '#f59e0b', margin: '6px 0' }}>
-          ⚠️ 快速获取方案基于本地缓存计算，可能因账号信息不匹配而不准确。若图片无法解密，请使用「内存扫描」方案。
-        </div>
         <div style={{ display: 'flex', gap: '8px', marginTop: '4px' }}>
-          <button className="btn btn-secondary btn-sm" onClick={handleAutoGetImageKey} disabled={isFetchingImageKey} title="从本地缓存快速计算（可能不准确）">
-            <Plug size={14} /> {isFetchingImageKey ? '获取中...' : '快速获取（缓存计算）'}
+          <button className="btn btn-primary btn-sm" onClick={handleAutoGetImageKey} disabled={isFetchingImageKey} title="从本地缓存快速计算">
+            <Plug size={14} /> {isFetchingImageKey ? '获取中...' : '缓存计算（推荐）'}
           </button>
-          <button className="btn btn-primary btn-sm" onClick={handleScanImageKeyFromMemory} disabled={isFetchingImageKey} title="扫描微信进程内存，准确率更高">
-            {isFetchingImageKey ? '扫描中...' : '内存扫描（推荐）'}
+          <button className="btn btn-secondary btn-sm" onClick={handleScanImageKeyFromMemory} disabled={isFetchingImageKey} title="扫描微信进程内存">
+            {isFetchingImageKey ? '扫描中...' : '内存扫描'}
           </button>
         </div>
         {isFetchingImageKey ? (
@@ -1399,7 +1396,7 @@ function SettingsPage({ onClose }: SettingsPageProps = {}) {
         ) : (
           imageKeyStatus && <div className="form-hint status-text" style={{ marginTop: '8px' }}>{imageKeyStatus}</div>
         )}
-        <span className="form-hint">内存扫描需要微信正在运行，并在微信中打开 2-3 张图片大图后再点击</span>
+        <span className="form-hint">优先推荐缓存计算方案。若图片无法解密，可使用内存扫描（需微信运行并打开 2-3 张图片大图）</span>
       </div>
 
       <div className="form-group">
diff --git a/src/pages/WelcomePage.tsx b/src/pages/WelcomePage.tsx
index 9c1d62c..26311e0 100644
--- a/src/pages/WelcomePage.tsx
+++ b/src/pages/WelcomePage.tsx
@@ -780,9 +780,6 @@ function WelcomePage({ standalone = false }: WelcomePageProps) {
 
             {currentStep.id === 'image' && (
               <div className="form-group">
-                <div className="field-hint" style={{ color: '#f59e0b', marginBottom: '12px' }}>
-                  ⚠️ 快速获取方案基于本地缓存计算，可能因账号信息不匹配而不准确。若图片无法解密，请使用下方「内存扫描」方案。
-                </div>
                 <div className="grid-2">
                   <div>
                     <label className="field-label">图片 XOR 密钥</label>
@@ -795,11 +792,11 @@ function WelcomePage({ standalone = false }: WelcomePageProps) {
                 </div>
 
                 <div style={{ display: 'flex', gap: '8px', marginTop: '16px' }}>
-                  <button className="btn btn-secondary btn-block" onClick={handleAutoGetImageKey} disabled={isFetchingImageKey} title="从本地缓存快速计算（可能不准确）">
-                    {isFetchingImageKey ? '获取中...' : '快速获取（缓存计算）'}
+                  <button className="btn btn-primary btn-block" onClick={handleAutoGetImageKey} disabled={isFetchingImageKey} title="从本地缓存快速计算">
+                    {isFetchingImageKey ? '获取中...' : '缓存计算（推荐）'}
                   </button>
-                  <button className="btn btn-primary btn-block" onClick={handleScanImageKeyFromMemory} disabled={isFetchingImageKey} title="扫描微信进程内存，准确率更高，需要微信正在运行">
-                    {isFetchingImageKey ? '扫描中...' : '内存扫描（推荐）'}
+                  <button className="btn btn-secondary btn-block" onClick={handleScanImageKeyFromMemory} disabled={isFetchingImageKey} title="扫描微信进程内存">
+                    {isFetchingImageKey ? '扫描中...' : '内存扫描'}
                   </button>
                 </div>
 
@@ -813,7 +810,7 @@ function WelcomePage({ standalone = false }: WelcomePageProps) {
                   imageKeyStatus && <div className="status-message" style={{ marginTop: '12px' }}>{imageKeyStatus}</div>
                 )}
 
-                <div className="field-hint" style={{ marginTop: '8px' }}>内存扫描需要微信正在运行，并在微信中打开 2-3 张图片大图后再点击</div>
+                <div className="field-hint" style={{ marginTop: '8px' }}>优先推荐缓存计算方案。若图片无法解密，可使用内存扫描（需微信运行并打开 2-3 张图片大图）</div>
               </div>
             )}
           </div>