fix(auth): avoid logout on export-only clear and harden db key auto-fetch

src/components/Sidebar.tsx

@@ -305,9 +305,14 @@ function Sidebar() {
       if (result.warning) {
         detailLines.push('', `注意：${result.warning}`)
       }
-      window.alert(`账号数据清理完成。\n\n${detailLines.join('\n')}\n\n为保障数据安全，WeFlow 已清除该账号本地缓存/导出相关数据。若需再次获取数据，请手动登录微信客户端并重新在 WeFlow 完成配置。`)
+      const followupHint = shouldClearCacheData
+        ? '若需再次获取数据，请手动登录微信客户端并重新在 WeFlow 完成配置。'
+        : '你可以继续使用当前登录状态，无需重新登录。'
+      window.alert(`账号数据清理完成。\n\n${detailLines.join('\n')}\n\n为保障数据安全，WeFlow 已清除该账号本地缓存/导出相关数据。${followupHint}`)
       resetClearDialogState()
-      window.location.reload()
+      if (shouldClearCacheData) {
+        window.location.reload()
+      }
     } catch (error) {
       console.error('清理账号数据失败:', error)
       window.alert('清理失败，请稍后重试。')

src/pages/SettingsPage.tsx

@@ -36,6 +36,18 @@ interface WxidOption {
   modifiedTime: number
 }
 
+const formatDbKeyFailureMessage = (error?: string, logs?: string[]): string => {
+  const base = String(error || '自动获取密钥失败').trim()
+  const tailLogs = Array.isArray(logs)
+    ? logs
+      .map(item => String(item || '').trim())
+      .filter(Boolean)
+      .slice(-6)
+    : []
+  if (tailLogs.length === 0) return base
+  return `${base}；最近状态：${tailLogs.join(' | ')}`
+}
+
 function SettingsPage() {
   const {
     isDbConnected,
@@ -725,7 +737,10 @@ function SettingsPage() {
           setIsManualStartPrompt(true)
           setDbKeyStatus('需要手动启动微信')
         } else {
-          showMessage(result.error || '自动获取密钥失败', false)
+          if (result.error?.includes('尚未完成登录')) {
+            setDbKeyStatus('请先在微信完成登录后重试')
+          }
+          showMessage(formatDbKeyFailureMessage(result.error, result.logs), false)
         }
       }
     } catch (e: any) {

src/pages/WelcomePage.tsx

@@ -23,6 +23,18 @@ interface WelcomePageProps {
   standalone?: boolean
 }
 
+const formatDbKeyFailureMessage = (error?: string, logs?: string[]): string => {
+  const base = String(error || '自动获取密钥失败').trim()
+  const tailLogs = Array.isArray(logs)
+    ? logs
+      .map(item => String(item || '').trim())
+      .filter(Boolean)
+      .slice(-6)
+    : []
+  if (tailLogs.length === 0) return base
+  return `${base}；最近状态：${tailLogs.join(' | ')}`
+}
+
 function WelcomePage({ standalone = false }: WelcomePageProps) {
   const navigate = useNavigate()
   const { isDbConnected, setDbConnected, setLoading } = useAppStore()
@@ -292,7 +304,10 @@ function WelcomePage({ standalone = false }: WelcomePageProps) {
           setIsManualStartPrompt(true)
           setDbKeyStatus('需要手动启动微信')
         } else {
-          setError(result.error || '自动获取密钥失败')
+          if (result.error?.includes('尚未完成登录')) {
+            setDbKeyStatus('请先在微信完成登录后重试')
+          }
+          setError(formatDbKeyFailureMessage(result.error, result.logs))
         }
       }
     } catch (e) {