feat: 临床试验管理支持快速变更试验状态

后端：新增 PATCH /trials/{id}/status 接口，校验状态值合法性
前端：
- trialService 新增 updateStatus() 方法
- TrialDataGrid 操作列新增状态变更按钮（SwapHorizIcon）
  点击弹出 Menu，列出4种状态（招募中/已关闭/已完成/已暂停）
  当前状态自动禁用，选中新状态后立即调用接口更新
- TrialsPage 处理 onStatusChange，乐观更新列表和详情面板状态
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/app/api/routes/trials.py

@@ -168,6 +168,28 @@ async def update_trial(trial_id: str, data: TrialCreate, db: AsyncSession = Depe
     return _trial_to_response(trial, criteria)
 
 
+@router.patch("/{trial_id}/status", response_model=TrialResponse)
+async def update_trial_status(
+    trial_id: str,
+    payload: dict,
+    db: AsyncSession = Depends(get_db),
+):
+    from app.models.trial import TrialStatus
+    trial = await db.get(Trial, trial_id)
+    if not trial:
+        raise HTTPException(status_code=404, detail="Trial not found")
+    new_status = payload.get("status")
+    if new_status not in [s.value for s in TrialStatus]:
+        raise HTTPException(status_code=422, detail=f"Invalid status: {new_status}")
+    trial.status = TrialStatus(new_status)
+    await db.commit()
+    await db.refresh(trial)
+    crit_result = await db.execute(
+        select(Criterion).where(Criterion.trial_id == trial_id).order_by(Criterion.order_index)
+    )
+    return _trial_to_response(trial, crit_result.scalars().all())
+
+
 @router.delete("/{trial_id}", status_code=204)
 async def delete_trial(trial_id: str, db: AsyncSession = Depends(get_db)):
     trial = await db.get(Trial, trial_id)

frontend/src/components/trials/TrialDataGrid.tsx

+import { useState } from 'react'
 import { DataGrid, GridColDef, GridRowParams } from '@mui/x-data-grid'
-import { Chip, Box, Stack, IconButton } from '@mui/material'
+import { Chip, Box, Stack, IconButton, Menu, MenuItem, ListItemIcon, Typography, Divider } from '@mui/material'
 import EditIcon from '@mui/icons-material/Edit'
 import DeleteIcon from '@mui/icons-material/Delete'
+import SwapHorizIcon from '@mui/icons-material/SwapHoriz'
 import type { TrialResponse } from '../../types/trial'
 import { StatusChip } from '../shared/StatusChip'
 import { useAuth } from '../../contexts/AuthContext'
 
+type TrialStatus = 'recruiting' | 'closed' | 'completed' | 'suspended'
+
+const STATUS_OPTIONS: { value: TrialStatus; label: string; color: string }[] = [
+  { value: 'recruiting', label: '招募中', color: '#2e7d32' },
+  { value: 'closed', label: '已关闭', color: '#757575' },
+  { value: 'completed', label: '已完成', color: '#1976d2' },
+  { value: 'suspended', label: '已暂停', color: '#ed6c02' },
+]
+
 const phaseColor: Record<string, 'default' | 'primary' | 'secondary' | 'warning'> = {
   I: 'default', II: 'primary', III: 'secondary', IV: 'warning',
 }
@@ -16,13 +27,31 @@ interface TrialDataGridProps {
   onRowClick: (row: TrialResponse) => void
   onEdit: (row: TrialResponse) => void
   onDelete: (id: string) => void
+  onStatusChange: (id: string, status: string) => void
 }
 
-export function TrialDataGrid({ rows, loading, onRowClick, onEdit, onDelete }: TrialDataGridProps) {
+export function TrialDataGrid({ rows, loading, onRowClick, onEdit, onDelete, onStatusChange }: TrialDataGridProps) {
   const { hasPermission } = useAuth()
   const canEdit = hasPermission('btn:trial:edit')
   const canDelete = hasPermission('btn:trial:delete')
 
+  const [menuAnchor, setMenuAnchor] = useState<HTMLElement | null>(null)
+  const [menuRow, setMenuRow] = useState<TrialResponse | null>(null)
+
+  const handleStatusMenuOpen = (e: React.MouseEvent<HTMLElement>, row: TrialResponse) => {
+    e.stopPropagation()
+    setMenuAnchor(e.currentTarget)
+    setMenuRow(row)
+  }
+
+  const handleStatusSelect = (status: TrialStatus) => {
+    if (menuRow && status !== menuRow.status) {
+      onStatusChange(menuRow.id, status)
+    }
+    setMenuAnchor(null)
+    setMenuRow(null)
+  }
+
   const baseColumns: GridColDef[] = [
     { field: 'nct_number', headerName: 'NCT编号', width: 130 },
     { field: 'title', headerName: '试验名称', flex: 1, minWidth: 200 },
@@ -44,12 +73,22 @@ export function TrialDataGrid({ rows, loading, onRowClick, onEdit, onDelete }: T
   const actionsColumn: GridColDef = {
     field: 'actions',
     headerName: '操作',
-    width: 100,
+    width: 130,
     sortable: false,
     renderCell: (params) => (
-      <Stack direction="row" spacing={1} sx={{ height: '100%', alignItems: 'center' }}>
+      <Stack direction="row" spacing={0.5} sx={{ height: '100%', alignItems: 'center' }}>
+        {canEdit && (
+          <IconButton
+            size="small"
+            color="primary"
+            title="变更状态"
+            onClick={(e) => handleStatusMenuOpen(e, params.row as TrialResponse)}
+          >
+            <SwapHorizIcon fontSize="small" />
+          </IconButton>
+        )}
         {canEdit && (
-          <IconButton size="small" color="primary" onClick={(e) => {
+          <IconButton size="small" color="default" onClick={(e) => {
             e.stopPropagation()
             onEdit(params.row as TrialResponse)
           }}>
@@ -71,6 +110,7 @@ export function TrialDataGrid({ rows, loading, onRowClick, onEdit, onDelete }: T
   const columns = (canEdit || canDelete) ? [...baseColumns, actionsColumn] : baseColumns
 
   return (
+    <>
     <DataGrid
       rows={rows.map(r => ({ ...r, id: r.id }))}
       columns={columns}
@@ -86,5 +126,34 @@ export function TrialDataGrid({ rows, loading, onRowClick, onEdit, onDelete }: T
         '& .MuiDataGrid-cell': { display: 'flex', alignItems: 'center' }
       }}
     />
+
+    {/* 状态变更菜单 */}
+    <Menu
+      anchorEl={menuAnchor}
+      open={!!menuAnchor}
+      onClose={() => { setMenuAnchor(null); setMenuRow(null) }}
+      transformOrigin={{ horizontal: 'right', vertical: 'top' }}
+      anchorOrigin={{ horizontal: 'right', vertical: 'bottom' }}
+    >
+      <Typography variant="caption" color="text.secondary" sx={{ px: 2, py: 0.5, display: 'block' }}>
+        变更试验状态
+      </Typography>
+      <Divider />
+      {STATUS_OPTIONS.map(opt => (
+        <MenuItem
+          key={opt.value}
+          selected={menuRow?.status === opt.value}
+          disabled={menuRow?.status === opt.value}
+          onClick={() => handleStatusSelect(opt.value)}
+          sx={{ minWidth: 140 }}
+        >
+          <ListItemIcon>
+            <Box sx={{ width: 10, height: 10, borderRadius: '50%', bgcolor: opt.color }} />
+          </ListItemIcon>
+          <Typography variant="body2">{opt.label}</Typography>
+        </MenuItem>
+      ))}
+    </Menu>
+    </>
   )
 }

frontend/src/pages/TrialsPage.tsx

@@ -68,6 +68,16 @@ export function TrialsPage() {
     }
   }
 
+  const handleStatusChange = async (id: string, status: string) => {
+    try {
+      const updated = await trialService.updateStatus(id, status)
+      setTrials(prev => prev.map(t => t.id === id ? { ...t, status: updated.status } : t))
+      if (selectedForDetail?.id === id) setSelectedForDetail(prev => prev ? { ...prev, status: updated.status } : prev)
+    } catch {
+      alert('状态更新失败')
+    }
+  }
+
   const handleEdit = (row: TrialResponse) => {
     setSelectedForEdit(row)
     setAddDialogOpen(true)
@@ -126,6 +136,7 @@ export function TrialsPage() {
                 onRowClick={handleRowClick}
                 onEdit={handleEdit}
                 onDelete={handleDeleteClick}
+                onStatusChange={handleStatusChange}
               />
             </Box>
           )}

frontend/src/services/trialService.ts

@@ -14,6 +14,9 @@ export const trialService = {
   update: (id: string, data: TrialCreate) =>
     api.put<TrialResponse>(`/trials/${id}`, data).then(r => r.data),
 
+  updateStatus: (id: string, status: string) =>
+    api.patch<TrialResponse>(`/trials/${id}/status`, { status }).then(r => r.data),
+
   delete: (id: string) =>
     api.delete(`/trials/${id}`),