feat: initial commit with Nuxt 3 student management system

- Add Nuxt 3 + Prisma + SQLite full-stack setup
- Add student CRUD API with batch import/export
- Add stats dashboard with gender/class distribution
- Add target community settings feature
- Add Docker deployment support (Dockerfile + docker-compose)
- Add README with development and deployment instructions

Dockerfile

@@ -0,0 +1,54 @@
+# 多阶段构建
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+# 安装构建依赖
+RUN apk add --no-cache openssl python3 make g++
+
+# 先复制 Prisma schema
+COPY prisma ./prisma
+
+# 复制 package 文件
+COPY package*.json ./
+
+# 安装依赖
+RUN npm ci --ignore-scripts
+
+# 生成 Prisma Client
+RUN npx prisma generate
+
+# 复制源代码
+COPY . .
+
+# 构建
+RUN npm run build
+
+# 生产镜像
+FROM node:20-alpine
+
+WORKDIR /app
+
+# 安装运行时依赖
+RUN apk add --no-cache openssl
+
+# 创建数据目录
+RUN mkdir -p /app/data && chmod 777 /app/data
+
+# 复制 node_modules
+COPY --from=builder /app/node_modules ./node_modules
+
+# 复制 Prisma
+COPY --from=builder /app/prisma ./prisma
+
+# 复制 package.json
+COPY --from=builder /app/package.json ./
+
+# 复制构建产物
+COPY --from=builder /app/.output ./
+
+# 暴露端口
+EXPOSE 3000
+
+# 启动应用
+CMD ["node", "server/index.mjs"]