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。

shareserver/Dockerfile

@@ -0,0 +1,24 @@
+FROM node:22-alpine AS build
+
+WORKDIR /app
+COPY package.json package-lock.json ./
+RUN npm ci
+COPY . .
+RUN npm run build
+
+FROM node:22-alpine AS runtime
+
+ENV NODE_ENV=production
+ENV SHARESERVER_PORT=8787
+ENV SHARESERVER_HOST=0.0.0.0
+WORKDIR /app
+
+COPY package.json package-lock.json ./
+RUN npm ci --omit=dev
+COPY --from=build /app/dist ./dist
+COPY --from=build /app/build-server ./build-server
+
+USER node
+EXPOSE 8787
+
+CMD ["node", "build-server/server/index.js"]