Sprint 3: 员工目录优化 + Profile Shell + 离职工作流重构 + 合同类型扩充 + 月度社保重构 + 商险管理Tab

S3-1: Roster.tsx 添加 InlineAlert 合同风险提示 + 快捷筛选标签
S3-2: 新建 EmployeeProfileShell.tsx 统一员工详情布局，重构 EmployeeProfile.tsx
S3-3: Termination.tsx 集成 Stepper 步骤条 + InlineAlert 风险提示
S3-4: schema.prisma ContractType 枚举扩充 DISPATCH/OUTSOURCING/PARTTIME + 后端接口 + 前端选择器
S3-5: SocialInsurance.tsx 月度办理 Tab 使用 InlineAlert 替换原始提示
S3-6: SocialInsurance.tsx 新增商险管理 Tab（方案CRUD + 参保人员列表）

frontend/src/pages/roster/EmployeeProfileShell.tsx

@@ -0,0 +1,240 @@
+/**
+ * EmployeeProfileShell — 员工档案壳组件
+ * 提供统一的员工详情页布局：摘要头部 + 标签导航 + 内容区域
+ * 可被 Roster、Termination、SocialInsurance 等页面复用
+ */
+import { useState, ReactNode } from 'react'
+import { X, Phone, Mail, MapPin, Calendar, Briefcase, DollarSign, FileText, AlertTriangle } from 'lucide-react'
+import { fmt, DetailTab, TAB_GROUPS, TAB_COUNT_KEYS } from './shared'
+
+interface EmployeeSummary {
+  id: string
+  name: string
+  department: string
+  status: string
+  position?: string
+  hireDate?: string
+  monthlySalary?: number
+  phone?: string
+  email?: string
+  city?: string
+  idCardMasked?: string
+  probationInfo?: {
+    isProbation: boolean
+    isExpiring: boolean
+    daysToConfirm: number
+  }
+  contractStatus?: string
+  latestContract?: {
+    contractType?: string
+    endDate?: string
+  }
+  hasTermination?: boolean
+  latestTerminationStatus?: string
+  latestTerminationType?: string
+}
+
+interface EmployeeProfileShellProps {
+  /** 员工摘要数据 */
+  profile: EmployeeSummary
+  /** 返回按钮回调 */
+  onBack: () => void
+  /** 标签计数获取函数 */
+  getTabCount?: (key: DetailTab) => number
+  /** 当前激活标签 */
+  activeTab?: DetailTab
+  /** 标签切换回调 */
+  onTabChange?: (tab: DetailTab) => void
+  /** 是否为在职状态 */
+  isActive?: boolean
+  /** 隐藏的标签列表（如离职员工隐藏考勤绩效） */
+  hiddenTabs?: DetailTab[]
+  /** 自定义标签渲染（覆盖默认 TAB_GROUPS） */
+  tabGroups?: typeof TAB_GROUPS
+  /** 内容区域渲染函数 */
+  children?: (tab: DetailTab) => ReactNode
+}
+
+/** 合同类型标签映射 */
+const CONTRACT_TYPE_LABELS: Record<string, { label: string; style: string }> = {
+  FIXED: { label: '固定期限', style: 'bg-blue-50 text-blue-700 border border-blue-200' },
+  UNFIXED: { label: '无固定期', style: 'bg-purple-50 text-purple-700 border border-purple-200' },
+  LABOR: { label: '劳务协议', style: 'bg-amber-50 text-amber-700 border border-amber-200' },
+  INTERNSHIP: { label: '实习协议', style: 'bg-teal-50 text-teal-700 border border-teal-200' },
+  DISPATCH: { label: '劳务派遣', style: 'bg-cyan-50 text-cyan-700 border border-cyan-200' },
+  OUTSOURCING: { label: '业务外包', style: 'bg-slate-50 text-slate-700 border border-slate-200' },
+  PARTTIME: { label: '兼职协议', style: 'bg-indigo-50 text-indigo-700 border border-indigo-200' },
+  UNSIGNED: { label: '未签合同', style: 'bg-gray-100 text-gray-500 border border-gray-200' },
+}
+
+/** 合同状态标签映射 */
+const CONTRACT_STATUS_LABELS: Record<string, { label: string; style: string }> = {
+  expired: { label: '已过期', style: 'bg-red-50 text-rose-700' },
+  unsigned_over_year: { label: '未签署(超1年)', style: 'bg-red-50 text-rose-700' },
+  unsigned_over_30: { label: '未签署(超30天)', style: 'bg-red-50 text-rose-700' },
+  unsigned: { label: '未签署', style: 'bg-yellow-50 text-amber-700' },
+  expiring: { label: '即将到期', style: 'bg-yellow-50 text-amber-700' },
+  active: { label: '正常', style: 'bg-green-50 text-emerald-700' },
+  unfixed: { label: '正常', style: 'bg-green-50 text-emerald-700' },
+}
+
+export default function EmployeeProfileShell({
+  profile,
+  onBack,
+  getTabCount,
+  activeTab: controlledTab,
+  onTabChange,
+  isActive = true,
+  hiddenTabs = [],
+  tabGroups = TAB_GROUPS,
+  children,
+}: EmployeeProfileShellProps) {
+  const [internalTab, setInternalTab] = useState<DetailTab>('basic')
+  const tab = controlledTab ?? internalTab
+  const setTab = onTabChange ?? setInternalTab
+
+  const contractType = profile.latestContract?.contractType
+  const contractTypeCfg = CONTRACT_TYPE_LABELS[contractType || ''] || CONTRACT_TYPE_LABELS.UNSIGNED
+  const contractStatusCfg = CONTRACT_STATUS_LABELS[profile.contractStatus || ''] || { label: '无合同', style: 'bg-gray-100 text-gray-500' }
+
+  return (
+    <div className="flex flex-col h-[calc(100vh-120px)]">
+      {/* 头部：返回按钮 + 员工摘要卡片 */}
+      <div className="shrink-0 pb-3">
+        <div className="flex items-center gap-3 mb-3">
+          <button onClick={onBack} className="text-gray-400 hover:text-gray-600 transition-colors" aria-label="返回列表">
+            <X className="w-5 h-5" />
+          </button>
+          <h1 className="text-sm font-semibold">{profile.name} — 完整档案</h1>
+        </div>
+
+        {/* 员工摘要卡片 */}
+        <div className="rounded-lg border border-gray-200 bg-white p-4">
+          <div className="flex items-start justify-between gap-4 flex-wrap">
+            {/* 左侧：基本信息 */}
+            <div className="flex items-center gap-4">
+              {/* 头像占位 */}
+              <div className="w-12 h-12 rounded-full bg-primary/10 flex items-center justify-center text-primary font-medium text-lg shrink-0">
+                {profile.name?.charAt(0) || '?'}
+              </div>
+              <div className="space-y-1">
+                <div className="flex items-center gap-2 flex-wrap">
+                  <span className="font-medium text-sm">{profile.name}</span>
+                  <span className={`px-2 py-0.5 rounded text-xs ${profile.status === 'ACTIVE' ? 'bg-green-50 text-emerald-700' : 'bg-gray-100 text-gray-500'}`}>
+                    {profile.status === 'ACTIVE' ? '在职' : profile.status === 'PRE_HIRE' ? '预入职' : '离职'}
+                  </span>
+                  {profile.probationInfo?.isProbation && (
+                    <span className={`px-2 py-0.5 rounded text-xs ${
+                      profile.probationInfo.isExpiring
+                        ? 'bg-orange-50 text-orange-700 border border-orange-200'
+                        : 'bg-amber-50 text-amber-700 border border-amber-200'
+                    }`}>
+                      试用期{profile.probationInfo.isExpiring ? `即将到期(${profile.probationInfo.daysToConfirm}天)` : `剩${profile.probationInfo.daysToConfirm}天`}
+                    </span>
+                  )}
+                  {profile.hasTermination && profile.status === 'ACTIVE' && profile.latestTerminationStatus !== 'CANCELLED' && profile.latestTerminationStatus !== 'COMPLETED' && (
+                    <span className={`px-2 py-0.5 rounded text-xs ${profile.latestTerminationType === 'RESIGNATION' ? 'bg-blue-50 text-blue-700' : 'bg-amber-50 text-amber-700'}`}>
+                      {profile.latestTerminationType === 'RESIGNATION' ? '待离职' : '待解聘'}
+                    </span>
+                  )}
+                </div>
+                <div className="flex items-center gap-3 text-xs text-gray-500 flex-wrap">
+                  {profile.department && (
+                    <span className="flex items-center gap-1">
+                      <Briefcase className="w-3 h-3" />{profile.department}
+                    </span>
+                  )}
+                  {profile.position && (
+                    <span className="text-gray-400">{profile.position}</span>
+                  )}
+                  {profile.hireDate && (
+                    <span className="flex items-center gap-1">
+                      <Calendar className="w-3 h-3" />入职 {profile.hireDate.toString().slice(0, 10)}
+                    </span>
+                  )}
+                  {profile.monthlySalary != null && (
+                    <span className="flex items-center gap-1">
+                      <DollarSign className="w-3 h-3" />¥{fmt(profile.monthlySalary)}/月
+                    </span>
+                  )}
+                </div>
+                {/* 联系方式 */}
+                <div className="flex items-center gap-3 text-xs text-gray-400 flex-wrap">
+                  {profile.phone && (
+                    <span className="flex items-center gap-1">
+                      <Phone className="w-3 h-3" />{profile.phone}
+                    </span>
+                  )}
+                  {profile.email && (
+                    <span className="flex items-center gap-1">
+                      <Mail className="w-3 h-3" />{profile.email}
+                    </span>
+                  )}
+                  {profile.city && (
+                    <span className="flex items-center gap-1">
+                      <MapPin className="w-3 h-3" />{profile.city}
+                    </span>
+                  )}
+                  {profile.idCardMasked && (
+                    <span className="font-mono">{profile.idCardMasked}</span>
+                  )}
+                </div>
+              </div>
+            </div>
+
+            {/* 右侧：合同状态 */}
+            <div className="flex items-center gap-2 flex-wrap">
+              <span className={`px-2 py-0.5 rounded text-xs ${contractTypeCfg.style}`}>
+                {contractTypeCfg.label}
+              </span>
+              <span className={`px-2 py-0.5 rounded text-xs ${contractStatusCfg.style}`}>
+                {contractStatusCfg.label}
+              </span>
+              {(profile.contractStatus === 'expired' || profile.contractStatus === 'unsigned_over_year' || profile.contractStatus === 'unsigned_over_30') && (
+                <span className="flex items-center gap-1 text-xs text-rose-600">
+                  <AlertTriangle className="w-3 h-3" />需处理
+                </span>
+              )}
+            </div>
+          </div>
+        </div>
+      </div>
+
+      {/* 标签导航 */}
+      <div className="flex gap-1 border-b overflow-x-auto shrink-0">
+        {tabGroups.map((group) => (
+          <div key={group.group} className="flex items-center">
+            {group.tabs
+              .filter((t) => isActive || !hiddenTabs.includes(t.key))
+              .map((t) => {
+                const count = getTabCount?.(t.key) ?? 0
+                return (
+                  <button
+                    key={t.key}
+                    onClick={() => setTab(t.key)}
+                    className={`px-4 py-2 text-sm font-medium border-b-2 transition-colors whitespace-nowrap flex items-center gap-1 ${
+                      tab === t.key ? 'border-primary text-primary' : 'border-transparent text-gray-500 hover:text-gray-700'
+                    }`}
+                  >
+                    {t.label}
+                    {count > 0 && (
+                      <span className={`ml-0.5 px-1.5 py-0.5 rounded-full text-[10px] leading-none ${
+                        tab === t.key ? 'bg-primary/10 text-primary' : 'bg-gray-100 text-gray-500'
+                      }`}>
+                        {count}
+                      </span>
+                    )}
+                  </button>
+                )
+              })}
+          </div>
+        ))}
+      </div>
+
+      {/* 内容区域 */}
+      <div className="flex-1 overflow-y-auto pt-3">
+        {children?.(tab)}
+      </div>
+    </div>
+  )
+}