feat: 开发任务和测试用例增加批量删除 + 单条删改

- DevTaskTab: 列表行前增加 checkbox，支持全选/批量删除
- DevTaskDetailDrawer: 顶部增加删除按钮（带确认）
- TestCaseTab: 同上，批量删除时校验关联 Bug（有 Bug 不可删）
- TestCaseDetailDrawer: 顶部增加删除按钮（有关联 Bug 时提示不可删）

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/web/components/test-case/TestCaseTab.tsx

@@ -1,7 +1,7 @@
 'use client';
 
 import { useState, useMemo, useEffect } from 'react';
-import { Plus, ClipboardCheck, Filter, CheckCircle2 } from 'lucide-react';
+import { Plus, ClipboardCheck, Filter, CheckCircle2, Trash2 } from 'lucide-react';
 import { useTestCaseStore } from '@/stores/useTestCaseStore';
 import { useBugStore } from '@/stores/useBugStore';
 import { useDevTaskStore } from '@/stores/useDevTaskStore';
@@ -21,7 +21,7 @@ interface Props {
 }
 
 export function TestCaseTab({ versionId, requirementIds }: Props) {
-  const { testCases, fetchTestCases } = useTestCaseStore();
+  const { testCases, fetchTestCases, deleteTestCase } = useTestCaseStore();
   const { bugs, fetchBugs } = useBugStore();
   const { tasks: devTasks } = useDevTaskStore();
   const { requirements } = useRequirementStore();
@@ -58,6 +58,30 @@ export function TestCaseTab({ versionId, requirementIds }: Props) {
   const [selectedCaseId, setSelectedCaseId] = useState<string | null>(null);
   const [bugForCaseId, setBugForCaseId] = useState<string | null>(null);
 
+  // 批量选择
+  const [selectedIds, setSelectedIds] = useState<Set<string>>(new Set());
+  const isAllSelected = paged.length > 0 && paged.every((c) => selectedIds.has(c.id));
+
+  const toggleSelect = (id: string) => {
+    const next = new Set(selectedIds);
+    if (next.has(id)) next.delete(id); else next.add(id);
+    setSelectedIds(next);
+  };
+
+  const toggleAll = () => {
+    if (isAllSelected) setSelectedIds(new Set());
+    else setSelectedIds(new Set(paged.map((c) => c.id)));
+  };
+
+  const handleBatchDelete = () => {
+    if (selectedIds.size === 0) return;
+    const hasBug = Array.from(selectedIds).some((id) => bugs.some((b) => b.testCaseId === id));
+    if (hasBug) { alert('选中的用例中有关联 Bug 的用例，无法删除。请先取消关联 Bug 的用例选择。'); return; }
+    if (!confirm(`确定删除选中的 ${selectedIds.size} 个测试用例？`)) return;
+    selectedIds.forEach((id) => deleteTestCase(id));
+    setSelectedIds(new Set());
+  };
+
   // 按需求分组（无需求的归为"通用"）
   const groupedByReq = useMemo(() => {
     const map = new Map<string, typeof paged>();
@@ -123,6 +147,11 @@ export function TestCaseTab({ versionId, requirementIds }: Props) {
           {(Object.entries(TEST_CASE_STATUS_LABEL) as [TestCaseStatus, string][]).map(([k, v]) => <option key={k} value={k}>{v}</option>)}
         </select>
         {hasFilter && <button onClick={() => { setFilterAssignee(''); setFilterStatus(''); setPage(1); }} className="text-[11px] text-[var(--accent)] hover:underline">清除</button>}
+        {selectedIds.size > 0 && (
+          <button onClick={handleBatchDelete} className="flex items-center gap-1 h-7 px-3 rounded-md text-[11px] font-medium bg-red-500 text-white hover:bg-red-600">
+            <Trash2 className="h-3 w-3" />删除 {selectedIds.size} 项
+          </button>
+        )}
         <span className="ml-auto text-[11px] text-[var(--ink-muted)]">{filteredCases.length} 条</span>
       </div>
 
@@ -133,22 +162,35 @@ export function TestCaseTab({ versionId, requirementIds }: Props) {
           {!hasFilter && <button onClick={() => setShowCreate(true)} className="mt-3 text-[12px] text-[var(--accent)] hover:underline">创建第一个用例</button>}
         </div>
       ) : (
-        Array.from(groupedByReq.entries()).map(([reqId, cases]) => {
-          const req = requirements.find((r) => r.id === reqId);
-          const reqPassed = cases.filter((c) => c.status === 'passed').length;
-          return (
-            <div key={reqId} className="rounded-lg border border-[var(--line)] bg-[var(--bg-card)] overflow-hidden">
-              <div className="flex items-center gap-2 px-4 py-2 bg-[var(--bg-subtle)] border-b border-[var(--line)]">
-                <span className="text-[11px] font-mono text-[var(--ink-muted)]">{req?.code}</span>
-                <span className="text-[12px] font-medium text-[var(--ink)] flex-1 truncate">{req?.title}</span>
+        <>
+          <div className="flex items-center gap-2 px-4 py-1.5">
+            <input type="checkbox" checked={isAllSelected} onChange={toggleAll} className="h-3.5 w-3.5 rounded border-[var(--line)]" />
+            <span className="text-[11px] text-[var(--ink-muted)]">全选当页</span>
+          </div>
+          {Array.from(groupedByReq.entries()).map(([reqId, cases]) => {
+            const req = reqId === '__none__' ? null : requirements.find((r) => r.id === reqId);
+            const reqPassed = cases.filter((c) => c.status === 'passed').length;
+            return (
+              <div key={reqId} className="rounded-lg border border-[var(--line)] bg-[var(--bg-card)] overflow-hidden">
+                <div className="flex items-center gap-2 px-4 py-2 bg-[var(--bg-subtle)] border-b border-[var(--line)]">
+                  <span className="text-[11px] font-mono text-[var(--ink-muted)]">{req?.code || '通用'}</span>
+                  <span className="text-[12px] font-medium text-[var(--ink)] flex-1 truncate">{req?.title || '未关联需求'}</span>
                 <span className="text-[11px] text-[var(--ink-muted)]">{reqPassed}/{cases.length} 通过</span>
               </div>
               {cases.map((c) => (
-                <TestCaseRow key={c.id} testCase={c} bugCount={bugs.filter((b) => b.testCaseId === c.id).length} onClick={() => setSelectedCaseId(c.id)} />
+                <div key={c.id} className="flex items-center">
+                  <div className="pl-4 flex items-center">
+                    <input type="checkbox" checked={selectedIds.has(c.id)} onChange={() => toggleSelect(c.id)} className="h-3.5 w-3.5 rounded border-[var(--line)]" onClick={(e) => e.stopPropagation()} />
+                  </div>
+                  <div className="flex-1 min-w-0">
+                    <TestCaseRow testCase={c} bugCount={bugs.filter((b) => b.testCaseId === c.id).length} onClick={() => setSelectedCaseId(c.id)} />
+                  </div>
+                </div>
               ))}
             </div>
           );
-        })
+        })}
+        </>
       )}
 
       {total > 20 && <Pagination total={total} page={page} pageSize={pageSize} onChange={setPage} onPageSizeChange={setPageSize} />}