云开发环境添加rsync、JDK17，替换Redis插件为Database Client

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.cloud-dev/Dockerfile

@@ -50,6 +50,8 @@ RUN apt-get update && apt-get install -y \
     imagemagick \
     zsh \
     vim \
+    rsync \
+    openjdk-17-jdk \
     && rm -rf /var/lib/apt/lists/*
 
 # 安装 Python 3.12
@@ -118,7 +120,7 @@ RUN code-server --install-extension ms-ceintl.vscode-language-pack-zh-hans \
     && code-server --install-extension dbaeumer.vscode-eslint \
     && code-server --install-extension prisma.prisma \
     && code-server --install-extension ecmel.vscode-html-css \
-    && code-server --install-extension cweijan.vscode-redis-client \
+    && code-server --install-extension cweijan.vscode-database-client2 \
     && code-server --install-extension anthropic.claude-code
 
 # 配置 code-server (密码将在启动时设置)