feat(tasks): 任务列表新增漏洞数量列，描述/目标列收窄

- 任务列表接口 TaskListMetricsAll 批量统计每任务的漏洞数(findings 表，
  按 task_id)，经 TaskDTO.findings 下发；列表页新增「漏洞」列，>0 高亮
- 描述/目标列宽 max-w-xs → max-w-40，目标列补 title 悬浮全文
- mock data/handler 同步补 findings 字段

web/src/app/(main)/function/tasks/page.tsx

@@ -950,6 +950,7 @@ export default function TasksPage() {
                       onSort={sortTasksBy}
                     />
                     <TableHead className="text-center">目标进度</TableHead>
+                    <TableHead className="text-center">漏洞</TableHead>
                     <TableHead className="text-center">运行中 Worker</TableHead>
                     <SortableTaskHead
                       field="created"
@@ -1193,7 +1194,7 @@ const TaskRow = React.memo(function TaskRow({
           {taskIsPinned(task) && <PinIcon className="text-primary size-4 shrink-0" aria-label="已置顶" />}
         </div>
       </TableCell>
-      <TableCell className="text-muted-foreground max-w-xs">
+      <TableCell className="text-muted-foreground max-w-40">
         <Link
           href={`/function/tasks/detail?id=${encodeURIComponent(task.id)}`}
           className="block truncate rounded-sm hover:text-foreground hover:underline focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring"
@@ -1202,7 +1203,9 @@ const TaskRow = React.memo(function TaskRow({
           {task.description}
         </Link>
       </TableCell>
-      <TableCell className="text-muted-foreground max-w-xs truncate">{task.goal}</TableCell>
+      <TableCell className="text-muted-foreground max-w-40 truncate" title={task.goal}>
+        {task.goal}
+      </TableCell>
       <TableCell>
         <StatusBadge domain="task" value={task.status} dot />
       </TableCell>
@@ -1213,6 +1216,13 @@ const TaskRow = React.memo(function TaskRow({
           <span className="text-muted-foreground">—</span>
         )}
       </TableCell>
+      <TableCell className="text-center text-xs tabular-nums">
+        {task.findings && task.findings > 0 ? (
+          <span className="text-destructive font-medium">{task.findings}</span>
+        ) : (
+          <span className="text-muted-foreground">0</span>
+        )}
+      </TableCell>
       <TableCell className="text-center text-xs tabular-nums">
         {task.in_flight && task.in_flight > 0 ? (
           <span className="text-foreground font-medium">{task.in_flight}</span>

web/src/lib/mock/data.ts

@@ -65,6 +65,7 @@ export const tasks: Task[] = [
     paused: false,
     active: true,
     in_flight: 3,
+    findings: 4,
     stalled: false,
     goals_total: 5,
     goals_met: 2,
@@ -90,6 +91,7 @@ export const tasks: Task[] = [
     paused: false,
     active: false,
     in_flight: 2,
+    findings: 2,
     stalled: false,
     goals_total: 4,
     goals_met: 1,

web/src/lib/mock/handler.ts

@@ -1192,6 +1192,7 @@ function route(m: string, path: string, seg: string[], q: URLSearchParams, b: Re
       paused: false,
       active: true,
       in_flight: 0,
+      findings: 0,
       stalled: false,
       goals_total: 0,
       goals_met: 0,

web/src/lib/types.ts

@@ -23,6 +23,7 @@ export interface Task {
   queued?: boolean;
   active?: boolean;
   in_flight?: number;
+  findings?: number; // 该任务已登记的漏洞数
   last_activity?: string;
   stalled?: boolean;
   goals_total?: number;