feat(image): 新建knowai-base:1.0.0镜像，已完成推送

- 重命名该分支为knowai-base（原architecture-nuxt3）
- 重新定义分支职责，重写README.md

BREAKING CHANGE：删除前knowai-nuxt-base:1.0.0镜像，删除原分支CI脚本以及项目文件

Dockerfile

@@ -0,0 +1,69 @@
+# ------------------------------------------------
+# 基础镜像：Node LTS（Debian trixie-slim）
+# ------------------------------------------------
+FROM node:lts-trixie-slim
+
+WORKDIR /usr/src/app
+
+ENV PNPM_HOME=/pnpm-global
+ENV PATH=$PNPM_HOME:$PATH
+ENV SHELL=/bin/sh
+
+# ------------------------------------------------
+# 安装 pnpm 并配置国内源
+# ------------------------------------------------
+RUN npm install -g pnpm && \
+    pnpm config set registry https://registry.npmmirror.com
+
+# 在 Dockerfile 里替换源
+RUN echo "deb http://mirrors.tuna.tsinghua.edu.cn/debian trixie main contrib non-free" > /etc/apt/sources.list && \
+    echo "deb http://mirrors.tuna.tsinghua.edu.cn/debian-security trixie-security main contrib non-free" >> /etc/apt/sources.list && \
+    echo "deb http://mirrors.tuna.tsinghua.edu.cn/debian trixie-updates main contrib non-free" >> /etc/apt/sources.list
+
+# ------------------------------------------------
+# 更新系统工具（最小化依赖）
+# ------------------------------------------------
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    git curl ca-certificates && \
+    rm -rf /var/lib/apt/lists/*
+
+# ------------------------------------------------
+# 安装运行时核心依赖（支持 SSR + CSR）
+# ------------------------------------------------
+RUN pnpm add -g \
+    nuxt@latest \
+    vue@latest \
+    vue-router@latest \
+    @vueuse/core \
+    @pinia/nuxt \
+    pinia-plugin-persistedstate \
+    @element-plus/nuxt \
+    @element-plus/icons-vue \
+    @nuxtjs/tailwindcss \
+    @nuxt/image \
+    @nuxt/icon \
+    @nuxtjs/color-mode \
+    @nuxtjs/component-cache \
+    axios \
+    node-fetch \
+    socket.io-client \
+    lodash \
+    dayjs \
+    crypto-js
+
+# ------------------------------------------------
+# 版本验证
+# ------------------------------------------------
+RUN echo "✅ Node 版本：" && node -v && \
+    echo "✅ pnpm 版本：" && pnpm -v && \
+    echo "✅ Nuxt 版本：" && pnpm dlx nuxt --version || true
+
+# ------------------------------------------------
+# 默认端口
+# ------------------------------------------------
+EXPOSE 3000
+
+# ------------------------------------------------
+# 启动方式
+# ------------------------------------------------
+CMD ["bash"]