feat: 新增 Docker Compose 一键部署（MySQL + 后端 + 前端）

- 新增 docker-compose.yml，按健康检查顺序启动 MySQL 8、Go 后端与 Nginx 前端
- 新增 server/web 多阶段 Dockerfile、nginx 反向代理配置与 .dockerignore
- 后端支持 KENAITO_* 环境变量覆盖配置，新增 /health 健康检查接口
- 补充中英文 README 与 Docker 部署文档、.env.example 环境变量模板

web/.dockerignore

@@ -0,0 +1,4 @@
+node_modules/
+dist/
+.DS_Store
+*.log

web/Dockerfile

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+# Build stage
+FROM node:20-alpine AS build
+
+WORKDIR /app
+
+COPY package.json package-lock.json ./
+RUN npm ci --no-audit --no-fund
+
+COPY . .
+RUN npm run build
+
+# Runtime stage
+FROM nginx:1.27-alpine
+
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+COPY --from=build /app/dist /usr/share/nginx/html
+
+EXPOSE 80

web/nginx.conf

@@ -0,0 +1,61 @@
+server {
+    listen 80;
+    server_name _;
+
+    root /usr/share/nginx/html;
+    index index.html;
+
+    client_max_body_size 10m;
+
+    gzip on;
+    gzip_types text/plain text/css application/javascript application/json image/svg+xml;
+    gzip_min_length 1024;
+
+    # 客户端配置拉取接口
+    location /api/ {
+        proxy_pass http://server:8080;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    # 管理端接口
+    location /admin/ {
+        proxy_pass http://server:8080;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    # 登录相关接口（精确匹配，避免与前端 /user/list 路由冲突）
+    location = /user/login {
+        proxy_pass http://server:8080;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    location = /user/logout {
+        proxy_pass http://server:8080;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    location = /user/loginUserInfo {
+        proxy_pass http://server:8080;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    # 前端单页应用
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+}