fix: 防御旧 localStorage 中已删除的 done 状态导致 undefined 崩溃

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

apps/web/components/dev-task/DevTaskDetailDrawer.tsx

@@ -28,7 +28,7 @@ export function DevTaskDetailDrawer({ taskId, allTaskIds, onClose }: Props) {
   const requirement = requirements.find((r) => r.id === task.requirementId);
   const allTasks = tasks.filter((t) => allTaskIds.includes(t.id));
   const predecessors = (task.predecessorIds || []).map((id) => allTasks.find((t) => t.id === id)).filter(Boolean);
-  const nextStatuses = ALLOWED_TRANSITIONS[task.status];
+  const nextStatuses = ALLOWED_TRANSITIONS[task.status] || [];
 
   const [blockReason, setBlockReason] = useState(task.blockReason || '');
   const [showBlockInput, setShowBlockInput] = useState(false);