fix: 修复前端代码质量问题

- 创建 Toast 通知组件，替换所有 alert() 调用
- 修复 useReview hook 内存泄漏（setInterval 清理）
- 移除所有 console.error 和 console.log 语句
- 为复制操作失败添加用户友好的 toast 提示

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/app/agency/profile/company/page.tsx

@@ -2,6 +2,7 @@
 
 import { useState } from 'react'
 import { useRouter } from 'next/navigation'
+import { useToast } from '@/components/ui/Toast'
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/Card'
 import { Button } from '@/components/ui/Button'
 import { Input } from '@/components/ui/Input'
@@ -120,6 +121,7 @@ const mockCurrentCompany = {
 
 export default function AgencyCompanyPage() {
   const router = useRouter()
+  const toast = useToast()
   const [isEditing, setIsEditing] = useState(false)
   const [formData, setFormData] = useState(mockCurrentCompany)
   const [isSaving, setIsSaving] = useState(false)
@@ -182,7 +184,7 @@ export default function AgencyCompanyPage() {
   // 提交验证
   const handleSubmitVerify = async () => {
     if (!verifyCode.trim()) {
-      alert('请输入验证信息')
+      toast.error('请输入验证信息')
       return
     }
 
@@ -196,7 +198,7 @@ export default function AgencyCompanyPage() {
     setVerifyMethod(null)
     setVerifyStep(1)
     setVerifyCode('')
-    alert('企业认证成功！')
+    toast.success('企业认证成功')
   }
 
   const handleSave = async () => {
@@ -204,7 +206,7 @@ export default function AgencyCompanyPage() {
     await new Promise(resolve => setTimeout(resolve, 1000))
     setIsSaving(false)
     setIsEditing(false)
-    alert('公司信息已保存')
+    toast.success('公司信息已保存')
   }
 
   // 认证状态显示

frontend/app/agency/profile/edit/page.tsx

@@ -2,6 +2,7 @@
 
 import { useState } from 'react'
 import { useRouter } from 'next/navigation'
+import { useToast } from '@/components/ui/Toast'
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/Card'
 import { Button } from '@/components/ui/Button'
 import { Input } from '@/components/ui/Input'
@@ -26,6 +27,7 @@ const mockUserData = {
 
 export default function AgencyProfileEditPage() {
   const router = useRouter()
+  const toast = useToast()
   const [formData, setFormData] = useState(mockUserData)
   const [isSaving, setIsSaving] = useState(false)
   const [copied, setCopied] = useState(false)
@@ -35,8 +37,8 @@ export default function AgencyProfileEditPage() {
       await navigator.clipboard.writeText(formData.agencyId)
       setCopied(true)
       setTimeout(() => setCopied(false), 2000)
-    } catch (err) {
-      console.error('复制失败:', err)
+    } catch {
+      toast.error('复制失败，请重试')
     }
   }
 
@@ -44,7 +46,7 @@ export default function AgencyProfileEditPage() {
     setIsSaving(true)
     await new Promise(resolve => setTimeout(resolve, 1000))
     setIsSaving(false)
-    alert('个人信息已保存')
+    toast.success('个人信息已保存')
     router.back()
   }
 

frontend/app/agency/profile/page.tsx

@@ -17,6 +17,7 @@ import {
   FileCheck
 } from 'lucide-react'
 import { cn } from '@/lib/utils'
+import { useToast } from '@/components/ui/Toast'
 
 // 代理商数据
 const mockAgency = {
@@ -87,6 +88,7 @@ const menuItems = [
 
 // 代理商卡片组件
 function AgencyCard() {
+  const toast = useToast()
   const [copied, setCopied] = useState(false)
 
   // 复制代理商ID
@@ -95,8 +97,8 @@ function AgencyCard() {
       await navigator.clipboard.writeText(mockAgency.agencyId)
       setCopied(true)
       setTimeout(() => setCopied(false), 2000)
-    } catch (err) {
-      console.error('复制失败:', err)
+    } catch {
+      toast.error('复制失败，请重试')
     }
   }