Phase 1 Care Engine MVP 最后一项 (#8): - 迁移: patient_family_member 表新增 user_id/consent_status/access_level/consented_at/consent_revoked_at - 实体: 更新 patient_family_member Model 含新字段 - DTO: FamilyMemberResp 扩展 + 新增 GrantFamilyAccessReq/FamilyPatientSummaryResp/FamilyHealthSummaryResp - Service: 授权/撤销访问、家庭成员查看关联患者列表、查看健康摘要(按 access_level 分级) - Handler: 5 个端点(grant/revoke/list/summary/link-user) - 路由: /health/patients/{id}/family-members/{fid}/grant-access 等 - 权限: health.family-proxy.list/manage - 已有 CRUD 适配新字段(list/create/update 返回 consent 状态)