feat(devcontainer): add enhanced Maven development environment with Java 21, Bun, and SSH support

- Add Docker Compose configuration for Maven + Java 21 development container
- Include SSH server support for remote development (Zed editor compatible)
- Install Bun package manager and opencode-ai for enhanced development workflow
- Provide Makefile with commands for build, up, down, restart, logs, shell, ssh, and clean
- Add .env.example template for configurable ports and paths
- Include .gitignore for Java/Maven artifacts and IDE files
- Configure USTC mirrors for faster package installation
- Support persistent volume mounting for root user configuration (.ssh, .m2 cache)

java-maven/vibe-enhance-version/Makefile

@@ -0,0 +1,62 @@
+# 引用 .env 文件中的变量
+include .env
+export $(shell sed 's/=.*//' .env)
+
+.PHONY: help build up down restart logs shell clean ssh
+
+# 默认目标：显示帮助
+help:
+	@echo "🛠️  Maven + Java + Bun 开发环境管理工具"
+	@echo "=================================================="
+	@echo "make build    - 构建镜像"
+	@echo "make up       - 启动容器 (后台模式)"
+	@echo "make down     - 停止并移除容器"
+	@echo "make restart  - 重启容器"
+	@echo "make logs     - 查看容器日志"
+	@echo "make shell    - 进入容器终端 (Bash)"
+	@echo "make ssh      - 使用 SSH 连接容器 (测试连接)"
+	@echo "make clean    - ⚠️  深度清理 (移除容器、镜像和挂载的数据目录)"
+	@echo "=================================================="
+	@echo "当前配置:"
+	@echo "  SSH端口: $(SSH_PORT)"
+	@echo "  代码路径: $(PROJECT_DIR)"
+
+# 构建镜像
+build:
+	@echo "📦 正在构建镜像 $(IMAGE_NAME):$(IMAGE_TAG)..."
+	@docker compose build
+
+# 启动容器
+up:
+	@echo "🚀 正在启动开发环境..."
+	@docker compose up -d
+	@echo "✅ 服务已启动!"
+	@echo "   - SSH 连接: ssh -p $(SSH_PORT) root@localhost (密码: root)"
+	@echo "   - Zed 连接: ssh://root@localhost:$(SSH_PORT)"
+
+# 停止容器
+down:
+	@echo "🛑 正在停止容器..."
+	@docker compose down
+
+# 重启
+restart: down up
+
+# 查看日志
+logs:
+	@docker compose logs -f
+
+# 进入 Shell (通过 Docker exec)
+shell:
+	@docker exec -it $(CONTAINER_NAME) bash
+
+# SSH 连接测试
+ssh:
+	@ssh -p $(SSH_PORT) -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null root@localhost
+
+# 深度清理 (危险操作)
+clean: down
+	@echo "⚠️  正在清理..."
+	@read -p "确定要删除持久化数据目录 $(DATA_DIR) 吗? [y/N] " ans && [ $${ans:-N} = y ] || (echo "已取消"; exit 1)
+	@rm -rf $(DATA_DIR)
+	@echo "🧹 清理完成"