feat: 医生工作站匹配列表新增删除操作

- 后端：新增 DELETE /matching/results/{id} 接口（需登录权限）
- 前端：matchingService 增加 delete() 方法
- 前端：WorkStationPage 操作栏加删除图标按钮，点击弹出
  MUI Dialog 确认弹窗（含警告提示、患者/试验详情展示）
  风格与系统其他删除确认框保持一致
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/app/api/routes/matching.py

@@ -109,6 +109,19 @@ async def get_result(result_id: str, db: AsyncSession = Depends(get_db)):
     return _result_to_response(r)
 
 
+@router.delete("/results/{result_id}", status_code=204)
+async def delete_result(
+    result_id: str,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    r = await db.get(MatchingResult, result_id)
+    if not r:
+        raise HTTPException(status_code=404, detail="Matching result not found")
+    await db.delete(r)
+    await db.commit()
+
+
 @router.put("/results/{result_id}/review", response_model=MatchingResultResponse)
 async def review_result(
     result_id: str,

frontend/src/pages/WorkStationPage.tsx

 import { useState, useEffect, useCallback, useRef } from 'react'
 import {
   Box, Typography, Card, CardContent, Stack, Button,
-  Chip, Divider, Badge, IconButton, FormControl, InputLabel, Select, MenuItem
+  Chip, Divider, Badge, IconButton, FormControl, InputLabel, Select, MenuItem,
+  Dialog, DialogTitle, DialogContent, DialogActions, Tooltip,
 } from '@mui/material'
 import { DataGrid, GridColDef } from '@mui/x-data-grid'
 import NotificationsIcon from '@mui/icons-material/Notifications'
 import MonitorHeartIcon from '@mui/icons-material/MonitorHeart'
 import VisibilityIcon from '@mui/icons-material/Visibility'
 import FilterListIcon from '@mui/icons-material/FilterList'
+import DeleteIcon from '@mui/icons-material/Delete'
+import WarningAmberRoundedIcon from '@mui/icons-material/WarningAmberRounded'
 import { RecommendationDrawer } from '../components/workstation/RecommendationDrawer'
 import { RecommendationSnackbar } from '../components/workstation/RecommendationSnackbar'
 import { MatchingDetailDrawer } from '../components/matching/MatchingDetailDrawer'
@@ -38,6 +41,7 @@ export function WorkStationPage() {
 
   const [selectedResult, setSelectedResult] = useState<MatchingResult | null>(null)
   const [detailOpen, setDetailOpen] = useState(false)
+  const [deleteTarget, setDeleteTarget] = useState<MatchingResult | null>(null)
   const shownNotificationIds = useRef<Set<string>>(new Set())
 
   const resultColumns: GridColDef[] = [
@@ -67,18 +71,32 @@ export function WorkStationPage() {
       ) : <Typography variant="caption" color="text.disabled">未审核</Typography>,
     },
     {
-      field: 'actions', headerName: '操作', width: 80, sortable: false,
+      field: 'actions', headerName: '操作', width: 110, sortable: false,
       renderCell: (params) => (
-        <Stack direction="row" sx={{ height: '100%', alignItems: 'center' }}>
+        <Stack direction="row" sx={{ height: '100%', alignItems: 'center' }} spacing={0.5}>
+          <Tooltip title="查看详情">
             <IconButton
               size="small" color="primary"
-            onClick={() => {
+              onClick={(e) => {
+                e.stopPropagation()
                 setSelectedResult(params.row as MatchingResult)
                 setDetailOpen(true)
               }}
             >
               <VisibilityIcon fontSize="small" />
             </IconButton>
+          </Tooltip>
+          <Tooltip title="删除记录">
+            <IconButton
+              size="small" color="error"
+              onClick={(e) => {
+                e.stopPropagation()
+                setDeleteTarget(params.row as MatchingResult)
+              }}
+            >
+              <DeleteIcon fontSize="small" />
+            </IconButton>
+          </Tooltip>
         </Stack>
       )
     }
@@ -127,6 +145,17 @@ export function WorkStationPage() {
     loadNotifications()
   }
 
+  const handleDeleteConfirm = async () => {
+    if (!deleteTarget) return
+    try {
+      await matchingService.delete(deleteTarget.id)
+      setDeleteTarget(null)
+      loadResults()
+    } catch {
+      // 静默失败，保持弹窗打开
+    }
+  }
+
   return (
     <Box>
       <Stack direction="row" alignItems="center" spacing={2} mb={3}>
@@ -246,6 +275,56 @@ export function WorkStationPage() {
         onOpenDrawer={() => { setDrawerOpen(true); setSnackNotification(null) }}
         onDismiss={() => setSnackNotification(null)}
       />
+
+      {/* 删除匹配记录确认弹窗 */}
+      <Dialog
+        open={!!deleteTarget}
+        onClose={() => setDeleteTarget(null)}
+        maxWidth="xs"
+        fullWidth
+      >
+        <DialogTitle sx={{ display: 'flex', alignItems: 'center', gap: 1, pb: 1 }}>
+          <DeleteIcon color="error" fontSize="small" />
+          <Typography variant="subtitle1" fontWeight={600}>删除匹配记录</Typography>
+        </DialogTitle>
+        <DialogContent sx={{ pt: 1 }}>
+          <Stack spacing={2}>
+            <Box sx={{ display: 'flex', alignItems: 'flex-start', gap: 1.5, p: 1.5, bgcolor: 'error.50', borderRadius: 1, border: '1px solid', borderColor: 'error.200' }}>
+              <WarningAmberRoundedIcon color="error" sx={{ mt: 0.25, flexShrink: 0 }} />
+              <Typography variant="body2" color="error.main" fontWeight={600}>
+                删除后将无法恢复，AI 推理依据也将一并清除
+              </Typography>
+            </Box>
+            <Stack spacing={1}>
+              <Box>
+                <Typography variant="caption" color="text.secondary">患者</Typography>
+                <Typography variant="body2" fontWeight={500}>{deleteTarget?.patient_name}</Typography>
+              </Box>
+              <Box>
+                <Typography variant="caption" color="text.secondary">临床试验</Typography>
+                <Typography variant="body2">{deleteTarget?.trial_title}</Typography>
+              </Box>
+              <Box>
+                <Typography variant="caption" color="text.secondary">匹配状态</Typography>
+                <Typography variant="body2">{deleteTarget?.status}</Typography>
+              </Box>
+            </Stack>
+          </Stack>
+        </DialogContent>
+        <DialogActions sx={{ px: 3, pb: 2, gap: 1 }}>
+          <Button onClick={() => setDeleteTarget(null)} variant="outlined" color="inherit">
+            取消
+          </Button>
+          <Button
+            variant="contained"
+            color="error"
+            startIcon={<DeleteIcon />}
+            onClick={handleDeleteConfirm}
+          >
+            确认删除
+          </Button>
+        </DialogActions>
+      </Dialog>
     </Box>
   )
 }

frontend/src/services/matchingService.ts

@@ -13,4 +13,7 @@ export const matchingService = {
 
   review: (id: string, data: { decision: string; notes?: string }) =>
     api.put<MatchingResult>(`/matching/results/${id}/review`, data).then(r => r.data),
+
+  delete: (id: string) =>
+    api.delete(`/matching/results/${id}`),
 }