feat(ai): 优化拆解目标和负责人推荐

apps/web/lib/ai-assignee-recommendation.ts

@@ -0,0 +1,29 @@
+import type { VersionMember } from './derive';
+
+export interface RecommendedAssigneeDraft {
+  recommendedAssigneeName?: string;
+  recommendedAssigneeReason?: string;
+}
+
+export interface ResolvedRecommendedAssignee {
+  name: string;
+  role: VersionMember['role'];
+  reason?: string;
+}
+
+export function resolveRecommendedAssignee(
+  draft: object,
+  members: VersionMember[] | undefined,
+): ResolvedRecommendedAssignee | undefined {
+  const recommendation = draft as RecommendedAssigneeDraft;
+  if (!recommendation.recommendedAssigneeName) return undefined;
+  const member = (members ?? []).find((candidate) => candidate.name === recommendation.recommendedAssigneeName);
+  if (!member) return undefined;
+
+  const reason = recommendation.recommendedAssigneeReason?.trim();
+  return {
+    name: member.name,
+    role: member.role,
+    ...(reason ? { reason } : {}),
+  };
+}