feat: 社保公积金账户化重构

新增 SocialAccount（账户）+ SocialYearStandard（年度标准）两层实体，
替代原 SocialInsuranceConfig/HousingFundConfig 按城市管理的方式。

- DB: 新增 SocialAccount、SocialYearStandard 表，Department 加账户关联
- 迁移: 旧 Config 表数据迁移到 Account + YearStandard
- 后端: 新增账户 CRUD + 年度标准 API，薪资计算适配 accountId
- 前端: 设置页新增账户管理 Tab，组织架构提示 level=0 可关联账户
- 前端: SocialInsurance.tsx 城市选择器改为账户选择器
- 兼容: 旧 Config 表保留，薪资计算回退旧表

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

frontend/src/pages/SocialInsurance.tsx

@@ -3,10 +3,10 @@ import { useSearchParams } from 'react-router-dom'
 import { toast } from 'sonner'
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query'
 import { useConfirm } from '../hooks/useConfirm'
-import { Calculator, Info, Check, Settings as SettingsIcon, Plus, History, Download, AlertCircle, Clock, MapPin, Sparkles } from 'lucide-react'
+import { Calculator, Info, Check, Settings as SettingsIcon, Plus, History, Download, AlertCircle, Clock, Sparkles } from 'lucide-react'
 import { InlineAlert } from '../components/ui/InlineAlert'
 import PageGuide from '../components/ui/PageGuide'
-import { socialInsuranceApi } from '../lib/api-services'
+import { socialInsuranceApi, socialAccountApi } from '../lib/api-services'
 import Card from '../components/ui/Card'
 import Button from '../components/ui/Button'
 import { Input, Label } from '../components/ui/Input'
@@ -24,6 +24,7 @@ export default function SocialInsurance() {
   const initialTab = (searchParams.get('tab') as 'monthly' | 'social' | 'housing' | 'deduction' | 'enrollment') || 'monthly'
   const [tab, setTab] = useState<'monthly' | 'social' | 'housing' | 'deduction' | 'enrollment'>(initialTab)
   const [city, setCity] = useState<string>('北京')
+  const [selectedAccountId, setSelectedAccountId] = useState<string>('')
   const [showAddCity, setShowAddCity] = useState(false)
   const [newCityName, setNewCityName] = useState('')
   const [base, setBase] = useState(8000)
@@ -56,14 +57,26 @@ export default function SocialInsurance() {
     baseMin: 6326, baseMax: 33891,
   })
 
-  // 获取城市列表
-  const { data: cities = [] } = useQuery<string[]>({
-    queryKey: ['social-config-cities'],
-    queryFn: async () => {
-      return await socialInsuranceApi.cities()
-    },
+  // 获取账户列表（按当前 tab 类型）
+  const accountType = tab === 'housing' ? 'HOUSING' : 'SOCIAL'
+  const { data: accounts = [] } = useQuery<any[]>({
+    queryKey: ['social-accounts', accountType],
+    queryFn: () => socialAccountApi.list(accountType),
   })
 
+  // 选中账户变化时同步 city
+  useEffect(() => {
+    if (selectedAccountId) {
+      const acc = accounts.find((a: any) => a.id === selectedAccountId)
+      if (acc) setCity(acc.city)
+    } else if (accounts.length > 0) {
+      // 默认选第一个（或默认账户）
+      const def = accounts.find((a: any) => a.isDefault) || accounts[0]
+      setSelectedAccountId(def.id)
+      setCity(def.city)
+    }
+  }, [accounts, selectedAccountId])
+
   const { data: config, isLoading: configLoading } = useQuery<any>({
     queryKey: ['social-config', city],
     queryFn: async () => {
@@ -185,10 +198,16 @@ export default function SocialInsurance() {
   })
 
   const createVersionMutation = useMutation({
-    mutationFn: (data: any) => socialInsuranceApi.createConfigVersion(data),
+    mutationFn: (data: any) => {
+      if (selectedAccountId) {
+        return socialAccountApi.createStandard(selectedAccountId, data)
+      }
+      return socialInsuranceApi.createConfigVersion(data)
+    },
     onSuccess: () => {
       queryClient.invalidateQueries({ queryKey: ['social-config'] })
       queryClient.invalidateQueries({ queryKey: ['social-config-versions'] })
+      queryClient.invalidateQueries({ queryKey: ['social-accounts'] })
       setShowNewVersion(false)
       toast.success('新版本已创建，旧版本已自动归档')
     },
@@ -199,10 +218,16 @@ export default function SocialInsurance() {
   })
 
   const createHousingVersionMutation = useMutation({
-    mutationFn: (data: any) => socialInsuranceApi.createHousingConfigVersion(data),
+    mutationFn: (data: any) => {
+      if (selectedAccountId) {
+        return socialAccountApi.createStandard(selectedAccountId, data)
+      }
+      return socialInsuranceApi.createHousingConfigVersion(data)
+    },
     onSuccess: () => {
       queryClient.invalidateQueries({ queryKey: ['housing-config'] })
       queryClient.invalidateQueries({ queryKey: ['housing-config-versions'] })
+      queryClient.invalidateQueries({ queryKey: ['social-accounts'] })
       setShowNewVersion(false)
       toast.success('公积金新版本已创建，旧版本已自动归档')
     },
@@ -394,53 +419,23 @@ export default function SocialInsurance() {
         ))}
         {(tab === 'social' || tab === 'housing') && (
           <div className="flex items-center gap-2 ml-auto">
-            <label className="text-sm text-gray-500">城市:</label>
-            {showAddCity ? (
-              <div className="flex items-center gap-1">
-                <input
-                  className="h-9 w-24 rounded-md border border-gray-200 bg-white px-3 text-sm text-gray-700 shadow-sm outline-none transition focus:border-primary focus:ring-2 focus:ring-primary/10"
-                  value={newCityName}
-                  onChange={(e) => setNewCityName(e.target.value)}
-                  placeholder="城市名"
-                  autoFocus
-                  onKeyDown={(e) => {
-                    if (e.key === 'Enter' && newCityName.trim()) {
-                      setCity(newCityName.trim())
-                      setNewCityName('')
-                      setShowAddCity(false)
-                      queryClient.invalidateQueries({ queryKey: ['social-config-cities'] })
-                    }
-                    if (e.key === 'Escape') { setShowAddCity(false); setNewCityName('') }
-                  }}
-                />
-                <button className="h-9 px-2 text-xs text-primary" onClick={() => {
-                  if (newCityName.trim()) {
-                    setCity(newCityName.trim())
-                    setNewCityName('')
-                    setShowAddCity(false)
-                    queryClient.invalidateQueries({ queryKey: ['social-config-cities'] })
-                  }
-                }}>确定</button>
-                <button className="h-9 px-2 text-xs text-gray-400" onClick={() => { setShowAddCity(false); setNewCityName('') }}>取消</button>
-              </div>
-            ) : (
-              <div className="flex items-center gap-1">
-                <select
-                  className="h-9 rounded-md border border-gray-200 bg-white px-3 text-sm text-gray-700 shadow-sm outline-none transition focus:border-primary focus:ring-2 focus:ring-primary/10"
-                  value={city}
-                  onChange={(e) => setCity(e.target.value)}
-                >
-                  {cities.map((c) => <option key={c} value={c}>{c}</option>)}
-                </select>
-                <button
-                  className="h-9 w-9 flex items-center justify-center rounded-md border border-gray-200 bg-white text-gray-400 hover:text-primary hover:border-primary transition"
-                  title="添加新城市"
-                  onClick={() => setShowAddCity(true)}
-                >
-                  <MapPin className="w-4 h-4" />
-                </button>
-              </div>
-            )}
+            <label className="text-sm text-gray-500">账户:</label>
+            <select
+              className="h-9 rounded-md border border-gray-200 bg-white px-3 text-sm text-gray-700 shadow-sm outline-none transition focus:border-primary focus:ring-2 focus:ring-primary/10"
+              value={selectedAccountId}
+              onChange={(e) => {
+                const acc = accounts.find((a: any) => a.id === e.target.value)
+                setSelectedAccountId(e.target.value)
+                if (acc) setCity(acc.city)
+              }}
+            >
+              {accounts.length === 0 && <option value="">暂无账户，请到设置中创建</option>}
+              {accounts.map((a: any) => (
+                <option key={a.id} value={a.id}>
+                  {a.name}（{a.city}）{a.isDefault ? ' · 默认' : ''}
+                </option>
+              ))}
+            </select>
           </div>
         )}
       </div>
@@ -708,9 +703,8 @@ export default function SocialInsurance() {
             <div className="grid md:grid-cols-3 gap-3">
               <div><Label>生效月份</Label><Input type="month" value={activeNewVersion.effectiveFrom} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, effectiveFrom: e.target.value })} /></div>
               <div><Label>城市</Label>
-                <select className="w-full h-9 rounded-md border border-input bg-background px-3 text-sm" value={activeNewVersion.city} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, city: e.target.value })}>
-                  {[...new Set([city, ...cities])].map((c) => <option key={c} value={c}>{c}</option>)}
-                </select>
+                <Input value={city} disabled className="bg-gray-50" />
+                <p className="text-xs text-gray-400 mt-1">从所选账户继承</p>
               </div>
               <div><Label>缴费基数下限</Label><Input type="number" value={activeNewVersion.baseMin} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, baseMin: Number(e.target.value) })} /></div>
               <div><Label>缴费基数上限</Label><Input type="number" value={activeNewVersion.baseMax} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, baseMax: Number(e.target.value) })} /></div>