feat: 新增 HTTP MCP Server，让 AI Agent 接入选菜

新增 packages/mcp，基于 Streamable HTTP 暴露菜谱库能力，复用 packages/cook 的选菜算法：recommend_recipes 按现有食材推荐，search_recipes 条件检索，check_incompatible 食材相克，get_recipe 菜谱详情。容器内与 nginx 共存，映射 2230 端口供 Agent 连接。

Dockerfile

@@ -13,6 +13,7 @@ ENV NUXT_TELEMETRY_DISABLED=1
 COPY package.json pnpm-lock.yaml pnpm-workspace.yaml ./
 COPY apps/web/package.json apps/web/package.json
 COPY packages/cook/package.json packages/cook/package.json
+COPY packages/mcp/package.json packages/mcp/package.json
 COPY docs/package.json docs/package.json
 
 RUN pnpm install --frozen-lockfile
@@ -33,13 +34,38 @@ ENV CF_PAGES_COMMIT_SHA=${CF_PAGES_COMMIT_SHA}
 # 构建产物输出到仓库根目录的 dist/（见 scripts/copy-web-output.ts）
 RUN pnpm run build
 
+# MCP Server 依赖 @yunyoujun/cook 的构建产物，根 build 不含它，需单独构建
+RUN pnpm -C packages/cook run build \
+    && pnpm -C packages/mcp run build
+
+# MCP Server 的生产依赖（含 workspace 包 @yunyoujun/cook 的构建产物）
+RUN pnpm --filter @cook/mcp deploy --legacy --prod /app/mcp-deploy
+
 # ---------- 运行阶段 ----------
 FROM nginx:stable-alpine
 
+# MCP Server 需要 Node 运行时，与 nginx 共存于同一容器
+RUN apk add --no-cache nodejs npm \
+    && mkdir -p /data
+
 COPY docker/nginx.conf /etc/nginx/conf.d/default.conf
 COPY --from=builder /app/dist /usr/share/nginx/html
 
-EXPOSE 2229
+COPY --from=builder /app/mcp-deploy /opt/cook-mcp
+COPY --from=builder /app/packages/data/recipe.csv /data/recipe.csv
+COPY --from=builder /app/packages/data/incompatible-foods.csv /data/incompatible-foods.csv
+
+COPY docker/entrypoint.sh /usr/local/bin/cook-entrypoint
+RUN chmod +x /usr/local/bin/cook-entrypoint
+
+ENV COOK_DATA_DIR=/data \
+    COOK_MCP_PORT=2230 \
+    COOK_MCP_HOST=0.0.0.0 \
+    COOK_MCP_PATH=/mcp
+
+EXPOSE 2229 2230
 
 HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
     CMD wget -qO- http://127.0.0.1:2229/ >/dev/null || exit 1
+
+ENTRYPOINT ["/usr/local/bin/cook-entrypoint"]