fix: HR系统优化批次1 - P0/P1问题修复

P0-3: 修复合同状态判断逻辑，有合同记录但signDate为null时不再误判未签
P0-5: 修复参保城市默认北京问题，导入和预览均改为null
P0-11: 添加全局ErrorBoundary防止白屏，三处布局均包裹
P1-2: 合同附件改为可选，允许先保存再补充上传
P1-7.2: 排班弹窗增加员工搜索（姓名/部门）
P1-8.2: 加班费导入支持Excel(xlsx/xls)格式，兼容中英文列名
P1-9: 社保/公积金基数月度办理支持逐人修改，后端返回recordId

frontend/src/pages/SocialInsurance.tsx

@@ -1048,9 +1048,9 @@ export default function SocialInsurance() {
                       </tr>
                     </thead>
                     <tbody>
-                      {add.map((i: any) => <MonthlyRow key={`sa-${city}-${i.employeeId}`} item={i} type="add" />)}
-                      {sub.map((i: any) => <MonthlyRow key={`ss-${city}-${i.employeeId}`} item={i} type="sub" />)}
-                      {normal.map((i: any) => <MonthlyRow key={`sn-${city}-${i.employeeId}`} item={i} type="normal" />)}
+                      {add.map((i: any) => <MonthlyRow key={`sa-${city}-${i.employeeId}`} item={i} type="add" onCorrected={handleMonthlyProcess} />)}
+                      {sub.map((i: any) => <MonthlyRow key={`ss-${city}-${i.employeeId}`} item={i} type="sub" onCorrected={handleMonthlyProcess} />)}
+                      {normal.map((i: any) => <MonthlyRow key={`sn-${city}-${i.employeeId}`} item={i} type="normal" onCorrected={handleMonthlyProcess} />)}
                     </tbody>
                     {(add.length > 0 || normal.length > 0) && (
                       <tfoot>
@@ -1090,9 +1090,9 @@ export default function SocialInsurance() {
                       </tr>
                     </thead>
                     <tbody>
-                      {add.map((i: any) => <MonthlyHousingRow key={`ha-${city}-${i.employeeId}`} item={i} type="add" />)}
-                      {sub.map((i: any) => <MonthlyHousingRow key={`hs-${city}-${i.employeeId}`} item={i} type="sub" />)}
-                      {normal.map((i: any) => <MonthlyHousingRow key={`hn-${city}-${i.employeeId}`} item={i} type="normal" />)}
+                      {add.map((i: any) => <MonthlyHousingRow key={`ha-${city}-${i.employeeId}`} item={i} type="add" onCorrected={handleMonthlyProcess} />)}
+                      {sub.map((i: any) => <MonthlyHousingRow key={`hs-${city}-${i.employeeId}`} item={i} type="sub" onCorrected={handleMonthlyProcess} />)}
+                      {normal.map((i: any) => <MonthlyHousingRow key={`hn-${city}-${i.employeeId}`} item={i} type="normal" onCorrected={handleMonthlyProcess} />)}
                     </tbody>
                     {(add.length > 0 || normal.length > 0) && (
                       <tfoot>
@@ -1146,19 +1146,58 @@ export default function SocialInsurance() {
   )
 }
 
-/** 月度办理社保行组件（可展开查看各险种明细） */
-function MonthlyRow({ item: i, type }: { item: any; type: 'add' | 'sub' | 'normal' }) {
+/** 月度办理社保行组件（可展开查看各险种明细，支持修改基数） */
+function MonthlyRow({ item: i, type, onCorrected }: { item: any; type: 'add' | 'sub' | 'normal'; onCorrected?: () => void }) {
   const [expanded, setExpanded] = useState(false)
+  const [editing, setEditing] = useState(false)
+  const [editBase, setEditBase] = useState(i.base?.toString() || '')
   const typeLabel = type === 'add' ? (i.changeType === 'CITY_CHANGE' ? '新增(城市变更)' : '新增') : type === 'sub' ? (i.changeType === 'CITY_CHANGE' ? '减员(城市变更)' : '减员') : '正常'
   const typeClass = type === 'add' ? 'bg-green-50 text-safe' : type === 'sub' ? 'bg-red-50 text-danger' : 'bg-gray-100 text-gray-500'
   const d = i.detail
+
+  const correctMutation = useMutation({
+    mutationFn: (data: { base: number }) => api.put(`/social/records/social/${i.recordId}/correct`, data),
+    onSuccess: () => {
+      setEditing(false)
+      toast.success('基数已修改')
+      onCorrected?.()
+    },
+    onError: () => toast.error('修改失败'),
+  })
+
+  const handleSaveBase = () => {
+    const val = Number(editBase) || 0
+    if (val <= 0) { toast.error('基数必须大于0'); return }
+    correctMutation.mutate({ base: val })
+  }
+
   return (
     <>
       <tr className="border-b last:border-0 hover:bg-gray-50 cursor-pointer" onClick={() => setExpanded(!expanded)}>
         <td className="py-1.5">{i.name} {d && <span className="text-gray-300 text-xs">{expanded ? '▾' : '▸'}</span>}</td>
         <td className="py-1.5 text-gray-500">{i.department}</td>
         <td className="py-1.5"><span className={`px-2 py-0.5 rounded text-xs ${typeClass}`}>{typeLabel}</span></td>
-        <td className="py-1.5 text-right">¥{fmt(i.base)}</td>
+        <td className="py-1.5 text-right">
+          {editing ? (
+            <span onClick={(e) => e.stopPropagation()} className="inline-flex items-center gap-1">
+              <Input type="number" step="0.01" min="0" className="!w-24 text-right text-xs" value={editBase}
+                onChange={(e) => setEditBase(e.target.value)} autoFocus />
+              <button className="text-xs text-primary hover:underline" onClick={handleSaveBase} disabled={correctMutation.isPending}>
+                {correctMutation.isPending ? '...' : '保存'}
+              </button>
+              <button className="text-xs text-gray-400 hover:underline" onClick={() => { setEditing(false); setEditBase(i.base?.toString() || '') }}>取消</button>
+            </span>
+          ) : (
+            <span className="inline-flex items-center gap-1">
+              ¥{fmt(i.base)}
+              {i.recordId && type !== 'sub' && (
+                <button className="text-xs text-gray-400 hover:text-primary" onClick={(e) => { e.stopPropagation(); setEditing(true); setEditBase(i.base?.toString() || '') }}>
+                  修改
+                </button>
+              )}
+            </span>
+          )}
+        </td>
         <td className="py-1.5 text-right text-danger">{d ? `¥${fmt(d.totalOrg)}` : '-'}</td>
         <td className="py-1.5 text-right text-warning">{d ? `¥${fmt(d.totalEmp)}` : '-'}</td>
         <td className="py-1.5 text-right font-medium text-primary">{d ? `¥${fmt(d.total)}` : '-'}</td>
@@ -1196,17 +1235,56 @@ function MonthlyRow({ item: i, type }: { item: any; type: 'add' | 'sub' | 'norma
   )
 }
 
-/** 月度办理公积金行组件 */
-function MonthlyHousingRow({ item: i, type }: { item: any; type: 'add' | 'sub' | 'normal' }) {
+/** 月度办理公积金行组件（支持修改基数） */
+function MonthlyHousingRow({ item: i, type, onCorrected }: { item: any; type: 'add' | 'sub' | 'normal'; onCorrected?: () => void }) {
+  const [editing, setEditing] = useState(false)
+  const [editBase, setEditBase] = useState(i.base?.toString() || '')
   const typeLabel = type === 'add' ? (i.changeType === 'CITY_CHANGE' ? '新增(城市变更)' : '新增') : type === 'sub' ? (i.changeType === 'CITY_CHANGE' ? '减员(城市变更)' : '减员') : '正常'
   const typeClass = type === 'add' ? 'bg-green-50 text-safe' : type === 'sub' ? 'bg-red-50 text-danger' : 'bg-gray-100 text-gray-500'
   const d = i.detail
+
+  const correctMutation = useMutation({
+    mutationFn: (data: { base: number }) => api.put(`/social/records/housing/${i.recordId}/correct`, data),
+    onSuccess: () => {
+      setEditing(false)
+      toast.success('基数已修改')
+      onCorrected?.()
+    },
+    onError: () => toast.error('修改失败'),
+  })
+
+  const handleSaveBase = () => {
+    const val = Number(editBase) || 0
+    if (val <= 0) { toast.error('基数必须大于0'); return }
+    correctMutation.mutate({ base: val })
+  }
+
   return (
     <tr className="border-b last:border-0 hover:bg-gray-50">
       <td className="py-1.5">{i.name}</td>
       <td className="py-1.5 text-gray-500">{i.department}</td>
       <td className="py-1.5"><span className={`px-2 py-0.5 rounded text-xs ${typeClass}`}>{typeLabel}</span></td>
-      <td className="py-1.5 text-right">¥{fmt(i.base)}</td>
+      <td className="py-1.5 text-right">
+        {editing ? (
+          <span className="inline-flex items-center gap-1">
+            <Input type="number" step="0.01" min="0" className="!w-24 text-right text-xs" value={editBase}
+              onChange={(e) => setEditBase(e.target.value)} autoFocus />
+            <button className="text-xs text-primary hover:underline" onClick={handleSaveBase} disabled={correctMutation.isPending}>
+              {correctMutation.isPending ? '...' : '保存'}
+            </button>
+            <button className="text-xs text-gray-400 hover:underline" onClick={() => { setEditing(false); setEditBase(i.base?.toString() || '') }}>取消</button>
+          </span>
+        ) : (
+          <span className="inline-flex items-center gap-1">
+            ¥{fmt(i.base)}
+            {i.recordId && type !== 'sub' && (
+              <button className="text-xs text-gray-400 hover:text-primary" onClick={() => { setEditing(true); setEditBase(i.base?.toString() || '') }}>
+                修改
+              </button>
+            )}
+          </span>
+        )}
+      </td>
       <td className="py-1.5 text-right text-danger">{d ? `¥${fmt(d.orgAmount)}` : '-'}</td>
       <td className="py-1.5 text-right text-warning">{d ? `¥${fmt(d.empAmount)}` : '-'}</td>
       <td className="py-1.5 text-right font-medium text-primary">{d ? `¥${fmt(d.total)}` : '-'}</td>