perf(web): 优化大数据量页面切换与聚合性能

apps/web/lib/linkage-engine.ts

@@ -28,6 +28,31 @@ export function deriveReqDevStatus(reqId: string, devTasks: DevTask[]): ReqDevSt
   return 'todo';
 }
 
+export function buildRequirementDevStatusMap(devTasks: DevTask[]): Map<string, ReqDevStatus> {
+  const stats = new Map<string, { total: number; submitted: number; active: boolean }>();
+
+  for (const task of devTasks) {
+    if (!task.requirementId) continue;
+    const row = stats.get(task.requirementId) ?? { total: 0, submitted: 0, active: false };
+    row.total += 1;
+    if (task.status === 'submitted') row.submitted += 1;
+    if (task.status === 'in_progress' || task.status === 'testing') row.active = true;
+    stats.set(task.requirementId, row);
+  }
+
+  const statusMap = new Map<string, ReqDevStatus>();
+  for (const [requirementId, row] of stats) {
+    if (row.total > 0 && row.submitted === row.total) {
+      statusMap.set(requirementId, 'completed');
+    } else if (row.active) {
+      statusMap.set(requirementId, 'developing');
+    } else {
+      statusMap.set(requirementId, 'todo');
+    }
+  }
+  return statusMap;
+}
+
 /**
  * 需求是否可编辑
  * 规则：开发中（有 in_progress 或 testing 的任务）不可编辑