feat: add ShareServer console prototype

ShareServer previously existed only as design documents. The repository now includes a standalone Hono service and a responsive React management-console prototype covering administrator and member workflows, with local build, test, and container entry points.

The sharing design now includes organization-scoped digital agents and explicit local partitioned-memory selection for @ calls. Memory documentation consistently uses partitioned memory and treats time or internal events only as optional recall triggers.

This remains an interactive prototype: fixture actions do not persist, and production authentication, PostgreSQL isolation, device connections, routing, relay, and federation still require implementation.

Release note: 新增可独立运行的 ShareServer 管理控制台交互原型，并完善组织数字人与分区记忆共享设计；当前原型数据和操作不会写入生产系统。

docs/features/knowledge-base/local-embedding-technical-design.md

@@ -162,7 +162,7 @@ GoodBuddy 当前已经具备：
   引用和脱敏诊断。
 - Agent Runtime 的选择或切换不改变当前向量连接；向量连接的选择或切换也不改变当前
   Agent Runtime。
-- 未来记忆、笔记或其他本地语义检索若要复用向量连接，必须经过独立产品设计、权限与
+- 分区记忆、笔记或其他本地语义检索若要复用向量连接，必须经过独立产品设计、权限与
   数据路径评审后显式接入，不能因存在全局向量连接而自动获得使用权。
 
 ---