feat(frontend): pairwise接口API + 成员条centerMemberId视角模式

cfc-frontend/utils/api.js

@@ -315,6 +315,11 @@ export const getVisibleFamilyMembers = () => {
 	return request('/api/family/user/members/visible', 'POST')
 }
 
+// 获取以指定成员为中心的所有成员关系（关系类型+信任/亲密度/沟通评分）
+export const getPairwiseRelationships = (centerMemberId) => {
+	return request('/api/family/relationship/pairwise', 'POST', { centerMemberId })
+}
+
 // 更新成员可见性
 export const updateMemberVisibility = (memberId, memberType, showToFamily) => {
 	return request('/api/family/user/members/update-visibility', 'POST', { memberId, memberType, showToFamily })