feat: add chair toggle to admin award juror management

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/app/(admin)/admin/awards/[id]/page.tsx

@@ -477,6 +477,13 @@ export default function AwardDetailPage({
   const removeJuror = trpc.specialAward.removeJuror.useMutation({
     onSuccess: () => utils.specialAward.listJurors.invalidate({ awardId }),
   })
+  const setChair = trpc.specialAward.setChair.useMutation({
+    onSuccess: () => {
+      utils.specialAward.listJurors.invalidate({ awardId })
+      toast.success('Chair status updated')
+    },
+    onError: () => toast.error('Failed to update chair status'),
+  })
   const setWinner = trpc.specialAward.setWinner.useMutation({
     onSuccess: invalidateAward,
   })
@@ -1328,6 +1335,7 @@ export default function AwardDetailPage({
                   <TableRow>
                     <TableHead>Member</TableHead>
                     <TableHead>Role</TableHead>
+                    <TableHead>Chair</TableHead>
                     <TableHead className="text-right">Actions</TableHead>
                   </TableRow>
                 </TableHeader>
@@ -1352,6 +1360,15 @@ export default function AwardDetailPage({
                           {j.user.role.replace('_', ' ')}
                         </Badge>
                       </TableCell>
+                      <TableCell>
+                        <Switch
+                          checked={j.isChair}
+                          onCheckedChange={(checked) =>
+                            setChair.mutate({ awardId, userId: j.userId, isChair: checked })
+                          }
+                          disabled={setChair.isPending}
+                        />
+                      </TableCell>
                       <TableCell className="text-right">
                         <Button
                           variant="ghost"